List of King of Mask Singer episodes (2021)
| List of King of Mask Singer episodes | |
|---|---|
| No. of episodes | 50 | 
| Release | |
| Original network | MBC | 
| Original release | January 3 – December 26, 2021  | 
| Season chronology | |
This is a list of episodes of the South Korean variety-music show King of Mask Singer in 2021. The show airs on MBC as part of their Sunday Night lineup. Due to the COVID-19 pandemic, the show would be recorded without any audience in the episodes, and the matches' results would be decided by the celebrity panelists. The names listed below are in performance order.
- – Contestant is instantly eliminated by the live audience and judging panel
 - – After being eliminated, contestant performs a prepared song for the next round and takes off their mask during the instrumental break
 - – After being eliminated and revealing their identity, contestant has another special performance.
 - – Contestant advances to the next round.
 - – Contestant becomes the challenger.
 - – Mask King.
 
Episodes
144th Generation Mask King (cont.)
- Contestants: Elly (Weki Meki), Jeong Minseong (La Poem), Chan (Victon), Outsider, Nam Hyun-hee, Shin Hyun-woo (Sohodae), Park Nam-jung, Jung Dong-nam
 
Episode 288 was broadcast on January 3, 2021.[1][2][3]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | 2021 Cheer Up, Ox! | Jeong Minseong of La Poem | Memory Loss (기억상실)  | 
Gummy | 11 | 
| Miracles in December | Chan of Victon | Try (노력)  | 
Park Won | 10 | |
| Pair 2 | Countdown | Shin Hyun-woo of Sohodae | To You (그대에게)  | 
Infinite Track | 3 | 
| The Twelfth Brother | Park Nam-jung | I Loved You (사랑했어요)  | 
Kim Hyun-sik | 18 | |
| Special | Countdown | Shin Hyun-woo of Sohodae | Irreversible Love (돌이킬 수 없는 사랑)  | 
Sohodae | — | 
| Round 3 | |||||
| Finalists | 2021 Cheer Up, Ox! | Jeong Minseong of La Poem | Old Song (오래된 노래)  | 
Kim Dong-ryul | 15 | 
| The Twelfth Brother | Park Nam-jung | D.D.D (디.디.디.)  | 
Kim Hye-rim | 6 | |
| Special | Twelve Zodiac Signs | Missing You (널 그리며), Emergency Landing of Love (사랑의 불시착), Days with Rain (비에스친 날들)  | 
Park Nam-jung | — | |
| Final | |||||
| Battle | 2021 Cheer Up, Ox! | Jung Min-sung of La Poem | Previous three songs used as voting standard | 5 | |
| Buttumak Cat | Yang Yo-seob of Highlight | Forever and Ever (영원히 영원히)  | 
Jaurim | 16 | |
145th Generation Mask King
- Contestants: Yoo Seung-beom, Yoon Taek, Lee Jin-ho, Jae-gyun Hwang, Wuno, Yubin, Lee Young-hyun (Big Mama), Suyun (singer) (Rocket Punch)
 
- Episode 289
 
Episode 289 was broadcast on January 10, 2021. This marks the beginning of the Hundred-forty-fifth Generation.[4][5][6]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | The Nature Man | Yoo Seung-beom | Once Again This Night (이 밤을 다시 한 번)  | 
Jo Ha-moon | 14 | 
| The City Man | Yoon Taek | 7 | |||
| 2nd Song | The City Man | Yoon Taek | Cheap Coffee (싸구려 커피)  | 
Chang Kiha | — | 
| Pair 2 | Won Bin | Lee Jin-ho | Memories Resemble Love (추억은 사랑을 닮아)  | 
Park Hyo-shin | 11 | 
| Mr. Bean | Jae-gyun Hwang | 10 | |||
| 2nd Song | Mr. Bean | Jae-gyun Hwang | Around Thirty (서른 즈음에)  | 
Kim Kwang-seok | — | 
| Pair 3 | Winter Rain | ₩uNo | Phone Number (전화번호)  | 
Jinusean | 6 | 
| The Flower of Snow | Yubin | 15 | |||
| 2nd Song | Winter Rain | ₩uNo | ? (Question Mark) (? (물음표))  | 
Primary ft. Choiza ft. Zion.T | — | 
| Pair 4 | Treasure Chest | Lee Young-hyun of Big Mama | With a Heart that Should Forget (잊어야 한다는 마음으로)  | 
Kim Kwang-seok | 17 | 
| Jukebox | Suyun of Rocket Punch | 4 | |||
| 2nd Song | Jukebox | Suyun of Rocket Punch | Playing with Fire (불장난)  | 
Blackpink | — | 
- Episode 290
 
Episode 290 was broadcast on January 17, 2021.[7][8][9]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | The Nature Man | Yoo Seung-beom | It is Love (사랑이야)  | 
Song Chang-sik | 17 | 
| Won Bin | Lee Jin-ho | Don't You Know? (모르시나요)  | 
Davichi | 4 | |
| Pair 2 | The Flower of Snow | Yubin | Move | Taemin | 3 | 
| Treasure Chest | Lee Young-hyun of Big Mama | A Night Like Tonight (오늘 같은 밤이면)  | 
Park Jeong-woon | 18 | |
| Round 3 | |||||
| Finalists | The Nature Man | Yoo Seung-beom | Yeongil Bay's Friend (영일만 친구)  | 
Choi Baek-ho | 3 | 
| Treasure Chest | Lee Young-hyun of Big Mama | My Way | Lee Soo | 18 | |
| Special | The Nature Man | Yoo Seung-beom | Jealousy (질투)  | 
Yoo Seung-beom | — | 
| Final | |||||
| Battle | Treasure Chest | Lee Young-hyun of Big Mama | Previous three songs used as voting standard | 15 | |
| Buttumak Cat | Yang Yo-seob of Highlight | The First Snow (첫 눈)  | 
Jung Joon-il | 6 | |
146th Generation Mask King
- Contestants: Park Si-hwan, Go Young-yeol (Second Moon/RabidAnce), Jaejae, Lee Ae-ran, Park Seon-woo, Son Ah-seop, Yves (singer) (Loona), Kim Ki-bum
 
- Episode 291
 
Episode 291 was broadcast on January 24, 2021. This marks the beginning of the Hundred-forty-sixth Generation.[10][11][12]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | Staying Home | Park Si-hwan | Stained (물들어)  | 
BMK | 17 | 
| Bangkok | Go Young-yeol of Second Moon/RabidAnce | 4 | |||
| 2nd Song | Bangkok | Go Young-yeol of Second Moon/RabidAnce | Tiger is Coming (범 내려온다)  | 
LeeNalChi | — | 
| Pair 2 | Menbosha | Jaejae | A Cheeky Man (얄미운 사람)  | 
Kim Ji-ae | 4 | 
| Sha Sha Sha | Lee Ae-ran | 17 | |||
| 2nd Song | Menbosha | Jaejae | Heartbreaker | G-Dragon | — | 
| Pair 3 | Frozen | Park Seon-woo | Thorn (가시)  | 
Buzz | 20 | 
| DDaeng | Son Ah-seop | 1 | |||
| 2nd Song | DDaeng | Son Ah-seop | One Love (하나의 사랑)  | 
Park Sang-min | — | 
| Pair 4 | Yuja Tea | Yves of Loona | Departure from a Country (출국)  | 
Hareem | 17 | 
| Balocha | Kim Ki-bum | 4 | |||
| 2nd Song | Balocha | Kim Ki-bum | Bravo My Life | Bom Yeoreum Gaeul Kyeoul | — | 
- Episode 292
 
Episode 292 was broadcast on January 31, 2021.[13][14][15]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | Staying Home | Park Si-hwan | Invisible Love (보이지 않는 사랑)  | 
Shin Seung-hun | 16 | 
| Sha Sha Sha | Lee Ae-ran | Daejeon Blues (대전 부르스)  | 
Ahn Jeong-ae | 5 | |
| Special | Sha Sha Sha | Life of a Century (백세인생)  | 
Lee Ae-ran | — | |
| Pair 2 | Frozen | Park Seon-woo | In the Rain (빗속에서)  | 
Lee Moon-sae | 16 | 
| Yuja Tea | Yves of Loona | Tomorrow (내일 할 일)  | 
Yoon Jong-shin | 5 | |
| Round 3 | |||||
| Finalists | Staying Home | Park Si-hwan | You to Me Again (그대 내게 다시)  | 
Byun Jin-sub | 18 | 
| Frozen | Park Seon-woo | Addicted Love (중독된 사랑)  | 
Jo Jang-hyuk | 3 | |
| Final | |||||
| Battle | Staying Home | Park Si-hwan | Previous three songs used as voting standard | 12 | |
| Treasure Chest | Lee Young-hyun of Big Mama | Secret (비밀)  | 
Boohwal | 9 | |
147th Generation Mask King
- Contestants: Han Hee-jun, Kim Na-young, Lee Eun-gyeol, Kim Shin-eui (Monni), Kim Yong-im, Ahn Sung-joon (trot singer), Lee Joo-hyuk (singer) (Gift), Punch
 
- Episode 293
 
Episode 293 was broadcast on February 7, 2021. This marks the beginning of the Hundred-forty-seventh Generation.[16][17][18]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | Brother | Han Hee-jun | It's Gonna Be Rolling | Lee So-ra | 6 | 
| Brother's Wife | Kim Na-young | 15 | |||
| 2nd Song | Brother | Han Hee-jun | Hug Me (안아줘)  | 
Jung Joon-il | — | 
| Pair 2 | Postcard | Lee Eun-gyeol | People All Change (사람들은 모두 변하나 봐)  | 
Bom Yeoreum Gaeul Kyeoul | 2 | 
| Yeopjeon | Kim Shin-eui of Monni | 19 | |||
| 2nd Song | Postcard | Lee Eun-gyeol | Start Over (시작)  | 
Gaho | — | 
| Pair 3 | Phrase Plate | Kim Yong-im | Where Are You (당신은 어디 있나요)  | 
Yang Soo-kyung | 13 | 
| Go Big or Go Home | Ahn Sung-joon | 8 | |||
| 2nd Song | Go Big or Go Home | Ahn Sung-joon | It's Art (예술이야)  | 
Psy | — | 
| Pair 4 | Barcode | Lee Joo-hyuk of Gift | Going Home | Kim Yoon-ah | 14 | 
| QR Code | Punch | 7 | |||
| 2nd Song | QR Code | Punch | Beautiful Goodbye (사월이 지나면 우리 헤어져요)  | 
Chen | — | 
- Episode 294
 
Episode 294 was broadcast on February 14, 2021.[19][20][21]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | Brother's Wife | Kim Na-young | Break Away | Big Mama | 8 | 
| Yeopjeon | Kim Shin-eui of Monni | Stay | Nell | 13 | |
| Pair 2 | Phrase Plate | Kim Yong-im | Loveletter (여정)  | 
Wax | 6 | 
| Barcode | Lee Joo-hyuk of Gift | Do You Want to Walk with Me (같이 걸을까)  | 
Lee Juck | 15 | |
| Round 3 | |||||
| Finalists | Yeopjeon | Kim Shin-eui of Monni | After a Breakup (널 보낸 후에)  | 
Choi Jae-hoon | 10 | 
| Barcode | Lee Joo-hyuk of Gift | I Want to Fall in Love (사랑에 빠지고 싶다)  | 
Johan Kim | 11 | |
| Final | |||||
| Battle | Barcode | Lee Joo-hyuk of Gift | Previous three songs used as voting standard | 19 | |
| Staying Home | Park Si-hwan | 12:30 (12시 30분)  | 
Beast | 2 | |
148th Generation Mask King
- Contestants: Song Joon-geun, Jiseon (singer) (Loveholics), Taeil (Block B), Shinsadong Tiger, Minnie ((G)I-dle), Nadeul (singer) (Weather Forecast), New (South Korean singer) (The Boyz), Na Yoon-kwon
 
- Episode 295
 
Episode 295 was broadcast on February 21, 2021. This marks the beginning of the Hundred-forty-eighth Generation.[22][23]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | A-type Man | Song Joon-geun | My Heart Will Be with You (너를 향한 마음)  | 
Lee Seung-hwan | 4 | 
| B-type Woman | Jiseon of Loveholics | 17 | |||
| 2nd Song | A-type Man | Song Joon-geun | Applause (갈채)  | 
Choi Yong-joon | — | 
| Pair 2 | Penthouse | Taeil of Block B | Fiction | Beast | 17 | 
| Vinyl House | Shinsadong Tiger | 4 | |||
| 2nd Song | Vinyl House | Shinsadong Tiger | Goodbye for a Moment (잠시만 안녕)  | 
MC the Max | — | 
| Pair 3 | Blood Cockles | Minnie of (G)I-dle | Snow (눈)  | 
Zion.T | 15 | 
| Clam Manila | Nadeul of Weather Forecast | 6 | |||
| 2nd Song | Clam Manila | Nadeul of Weather Forecast | Oh! What a Shiny Night (밤이 깊었네)  | 
Crying Nut | — | 
| Special | Clam Manila | I Like You (좋아 좋아)  | 
Weather Forecast | — | |
| Pair 4 | Snowman | New of The Boyz | Doll (인형)  | 
Lee Ji-hoon | 6 | 
| Snowflake | Na Yoon-kwon | 15 | |||
| 2nd Song | Snowman | New of The Boyz | Eraser (지우개)  | 
Ali | — | 
- Episode 296
 
Episode 296 was broadcast on February 28, 2021.[24][25][26]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | B-type Woman | Jiseon of Loveholics | If (만약에)  | 
Taeyeon | 9 | 
| Penthouse | Taeil of Block B | Hui Jae (희재)  | 
Sung Si-kyung | 12 | |
| Special | B-type Woman | Jiseon of Loveholics | Doll's Dream (인형의 꿈) & Loveholic | Loveholics | — | 
| Pair 2 | Blood Cockles | Minnie of (G)I-dle | D (Half Moon) | Dean | 5 | 
| Snowflake | Na Yoon-kwon | The Fool (이 바보야)  | 
Jung Seung-hwan | 16 | |
| Round 3 | |||||
| Finalists | Penthouse | Taeil of Block B | Flower Way (꽃길)  | 
Kim Se-jeong | 3 | 
| Snowflake | Na Yoon-kwon | Alone in Love (혼자만의 사랑)  | 
Kim Gun-mo | 18 | |
| Final | |||||
| Battle | Snowflake | Na Yoon-kwon | Previous three songs used as voting standard | 10 | |
| Barcode | Lee Joo-hyuk of Gift | Things We Took for Granted (당연한 것들)  | 
Lee Juck | 11 | |
149th Generation Mask King
- Contestants: Kim Chae-won (Iz*One), Kwon Jin-ah, Kim Boa (Keembo) (Keembo (group)), Kim Bo-kyung, Park Sang-min, Lee Man-ki, Choi Jung-yoon, Kim Jun-ho
 
- Episode 297
 
Episode 297 was broadcast on March 7, 2021. This marks the beginning of the Hundred-forty-ninth Generation.[27][28][29]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | Formosan Deer | Kim Chae-won of Iz*One | No.1 | BoA | 8 | 
| Ribeye Steak | Kwon Jin-ah | 13 | |||
| 2nd Song | Formosan Deer | Kim Chae-won of Iz*One | I'm Not Alone (혼자가 아닌 나)  | 
Seo Young-eun | — | 
| Pair 2 | Mugwort | Kim Boa of Keembo | Don't Touch Me | Refund Sisters | 11 | 
| Garlic | Kim Bo-kyung | 10 | |||
| 2nd Song | Garlic | Kim Bo-kyung | A Flying Butterfly (나는 나비)  | 
YB | — | 
| Pair 3 | Concert | Park Sang-min | I'm Yours (애모)  | 
Kim Soo-hee | 16 | 
| An Alpine Club | Lee Man-gi | 5 | |||
| 2nd Song | An Alpine Club | Lee Man-gi | My Heart Aches (가슴 아프게)  | 
Nam Jin | — | 
| Pair 4 | Love is Coming Back | Choi Jung-yoon | An Essay of Memory (기억의 습작)  | 
Exhibition | 9 | 
| Do I Look Like a King? | Kim Jun-ho | 12 | |||
| 2nd Song | Love is Returning | Choi Jung-yoon | Aloha (아로하)  | 
Cool | — | 
- Episode 298
 
Episode 298 was broadcast on March 14, 2021.[30][31][32]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | Ribeye Steak | Kwon Jin-ah | As Time Goes By (시간이 흐른 뒤)  | 
T | 7 | 
| Mugwort | Kim Boa of Keembo | Nunu Nana (눈누난나)  | 
Jessi | 14 | |
| Pair 2 | Concert | Park Sang-min | Incurable Disease (난치병)  | 
Hareem | 15 | 
| Do I Look Like a King? | Kim Jun-ho | After the Love Has Gone (사랑한 후에)  | 
Jeon In-kwon | 6 | |
| Round 3 | |||||
| Finalists | Mugwort | Kim Boa of Keembo | Sorry (미안해요)  | 
Kim Gun-mo | 13 | 
| Concert | Park Sang-min | Lifetime (일생을)  | 
Kim Hyun-chul | 8 | |
| Final | |||||
| Battle | Mugwort | Kim Boa of Keembo | Previous three songs used as voting standard | 5 | |
| Barcode | Lee Joo-hyuk of Gift | Ice Fortress (얼음요새)  | 
Dear Cloud | 16 | |
150th Generation Mask King
- Contestants: Woo Soon-sil, Do Sang-woo, Jung Seon-ah, DJ Tukutz (Epik High), Yoo Ji-na, Jeon Tae-poong, Hong Young-joo, Kim Hyun-jung
 
- Episode 299
 
Episode 299 was broadcast on March 21, 2021. This marks the beginning of the Hundred-fiftieth Generation.[33][34][35]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | Yellow | Woo Soon-sil | I'm Happy (난 행복해)  | 
Lee So-ra | 17 | 
| Grey | Do Sang-woo | 4 | |||
| 2nd Song | Grey | Do Sang-woo | It's Not Love If It Hurts Too Much (너무 아픈 사랑은 사랑이 아니었음을)  | 
Kim Kwang-seok | — | 
| Pair 2 | Baby Goat | Jung Seon-ah | Never Ending Story | Boohwal | 18 | 
| Baby Bear | DJ Tukutz of Epik High | 3 | |||
| 2nd Song | Baby Bear | DJ Tukutz of Epik High | An Ordinary Day (보통날)  | 
g.o.d | — | 
| Pair 3 | Good Day | Yoo Ji-na | Train Heading for South (남행열차)  | 
Kim Soo-hee | 16 | 
| Oh, My! | Jeon Tae-poong | 5 | |||
| 2nd Song | Oh, My! | Jeon Tae-poong | To the Fool ... From the Fool (바보에게... 바보가)  | 
Park Myung-soo | — | 
| Pair 4 | 100 Days of Meeting | Hong Young-joo | Romantic Cat (낭만고양이)  | 
Cherry Filter | 5 | 
| The First Day from Today | Kim Hyun-jung | 16 | |||
| 2nd Song | 100 Days of Meeting | Hong Young-joo | Like an Indian Doll (인디언 인형처럼)  | 
Na-mi | — | 
- Episode 300
 
Episode 300 was broadcast on March 28, 2021.[36][37][38]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | Yellow | Woo Soon-sil | Facing the Desolate Love (사랑 그 쓸쓸함에 대하여)  | 
Yang Hee-eun | 10 | 
| Baby Goat | Jung Seon-ah | Heaven | Kim Hyun-sung | 11 | |
| Special | Yellow | Woo Soon-sil | The Lost Umbrella (잃어버린 우산)  | 
Woo Soon-sil | — | 
| Pair 2 | Good Day | Yoo Ji-na | First Express (첫차)  | 
Seoul Sisters | 7 | 
| The First Day from Today | Kim Hyun-jung | People Who Make Me Sad (나를 슬프게 하는 사람들)  | 
Kim Kyung-ho | 14 | |
| Round 3 | |||||
| Finalists | Baby Goat | Jung Seon-ah | Memory of the Wind (바람기억)  | 
Naul | 16 | 
| Day 1 from Today | Kim Hyun-jung | I Have a Lover (애인 있어요)  | 
Lee Eun-mi | 5 | |
| Special | The First Day from Today | Breakup with Her (그녀와의 이별) & Bruise (멍) | Kim Hyun-jung | — | |
| Final | |||||
| Battle | Baby Goat | Jung Seon-ah | Previous three songs used as voting standard | 14 | |
| Barcode | Lee Joo-hyuk of Gift | Happy Together | Park Hyo-shin | 7 | |
151st Generation Mask King
- Contestants: Han Sang-il (Noise), Juvie Train (Buga Kingz), Go Yoo-jin (Flower), Do Kyung-wan, Lee Eun-ji, Kim Hae-joon, Park Seon-joo, Lee Seung-yeon
 
- Episode 301
 
Episode 301 was broadcast on April 4, 2021. This marks the beginning of the Hundred-fifty-first Generation.[39][40][41]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Opening | Music Captain of Our Local | Ha Hyun-woo of Guckkasten | Lazenca, Save Us | N.EX.T | — | 
| Round 1 | |||||
| Pair 1 | A Musical Representative | Han Sang-il of Noise | One More Step (한 걸음 더)  | 
Yoon Sang | 5 | 
| A Music Register | Juvie Train of Buga Kingz | 16 | |||
| 2nd Song | A Musical Representative | Han Sang-il of Noise | It's Been a Long Time (한동안 뜸했었지)  | 
Love and Peace | — | 
| Special | A Musical Representative | What I Wanted from You (너에게 원한건)  | 
Noise | — | |
| Pair 2 | Yoon Sang | Go Yoo-jin of Flower | Beautiful Restriction (아름다운 구속)  | 
Kim Jong-seo | 19 | 
| Yoo Young-seok | Do Kyung-wan | 2 | |||
| 2nd Song | Yoo Young-seok | Do Kyung-wan | Every Moment of You (너의 모든 순간)  | 
Sung Si-kyung | — | 
| Pair 3 | Mask Pack | Lee Eun-ji | Love Day | Yang Yo-seob and Jung Eun-ji | 17 | 
| Six Pack | Kim Hae-joon | 4 | |||
| 2nd Song | Six Pack | Kim Hae-joon | Should I Say I Love You Again? (다시 사랑한다 말할까)  | 
Kim Dong-ryul | — | 
| Pair 4 | Ugly 6-years-old | Park Seon-joo | Sad Fate (슬픈인연)  | 
Na-mi | 19 | 
| Life Starts at 60 | Lee Seung-yeon | 2 | |||
| 2nd Song | Life Starts at 60 | Lee Seung-yeon | When Love Passes (사랑이 지나가면)  | 
Lee Moon-sae | — | 
- Episode 302
 
Episode 302 was broadcast on April 11, 2021.[42][43][44]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | A Music Register | Juvie Train of Buga Kingz | Forgive Me (나를 용서해)  | 
Keep Six | 5 | 
| Yoon Sang | Go Yoo-jin of Flower | Making a New Ending for This Story (이 소설의 끝을 다시 써보려 해)  | 
Han Dong-geun | 16 | |
| Pair 2 | Mask Pack | Lee Eun-ji | I'm Feeling Good Day (예감 좋은 날)  | 
Rumble Fish | 1 | 
| Ugly 6-years-old | Park Seon-joo | Wind is Blowing (바람이 분다)  | 
Lee So-ra | 20 | |
| Round 3 | |||||
| Finalists | Yoon Sang | Go Yoo-jin of Flower | To Her Love (그녀의 연인에게)  | 
K2 | 8 | 
| Ugly 6-years-old | Park Seon-joo | Don't Leave by My Side (내 곁에서 떠나가지 말아요)  | 
The Light and Salt | 13 | |
| Special | Yoon Sang | Go Yoo-jin of Flower | Endless | Flower | — | 
| Final | |||||
| Battle | Ugly 6-years-old | Park Seon-joo | Previous three songs used as voting standard | 9 | |
| Baby Goat | Jung Seon-ah | A World We'll Make (세상은)  | 
Shin Hyo-beom | 12 | |
152nd Generation Mask King
- Contestants: Syuka, Song Bong-joo (Jatanpung), Lee Jeong-kwon, Park Sung-joon (A.R.T), Woo Yeon-yi, Kim Jong-seok, Noh Hee-ji, Lee Joo-woo
 
- Episode 303
 
Episode 303 was broadcast on April 18, 2021. This marks the beginning of the Hundred-fifty-second Generation.[45][46][47]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | Financial Technology | Syuka | We Need our Love (우리의 사랑이 필요한거죠)  | 
Byun Jin-sub | 2 | 
| At-Home Job | Song Bong-joo of Jatanpung | 19 | |||
| 2nd Song | Financial Technology | Syuka | Under the Sky (하늘 아래서)  | 
Kim Min-jong | — | 
| Pair 2 | Pizza & Beer | Lee Jeong-kwon | Dream (꿈)  | 
Cho Yong-pil | 17 | 
| Soju & Samgyeopsal | Park Sung-joon of A.R.T | 4 | |||
| 2nd Song | Soju & Samgyeopsal | Park Sung-joon of A.R.T | Hometown Station (고향역)  | 
Na Hoon-a | — | 
| Pair 3 | First Love | Woo Yeon-yi | Desert Island (무인도)  | 
Kim Choo-ja | 18 | 
| Last Love | Kim Jong-seok | 3 | |||
| 2nd Song | Last Love | Kim Jong-seok | Hands of a Clock (시계바늘)  | 
Shin Yoo | — | 
| Pair 4 | Cook | Noh Hee-ji | Star (별)  | 
Youme | 4 | 
| Dark History | Lee Joo-woo | 17 | |||
| 2nd Song | Cook | No Hee-ji | Flying Girl (비행소녀)  | 
Magolpy | — | 
- Episode 304
 
Episode 304 was broadcast on April 25, 2021.[48][49][50]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | At-Home Job | Song Bong-joo of Jatanpung | Those Days (그날들)  | 
Kim Kwang-seok | 10 | 
| Pizza & Beer | Lee Jeong-kwon | I Hate You (미워요)  | 
Choi Jung-in | 11 | |
| Special | At-Home Job | Song Bong-joo of Jatanpung | You're to Me And I'm to You (The Classic OST) (너에게 난, 나에게 넌)  | 
Jatanpung | — | 
| Pair 2 | First Love | Woo Yeon-yi | Unready Farewell (준비 없는 이별)  | 
Green Area | 17 | 
| Dark History | Lee Joo-woo | Goodbye (잘가요)  | 
Jung Jae-wook | 4 | |
| Round 3 | |||||
| Finalists | Pizza & Beer | Lee Jeong-kwon | From Mark | Ha Dong-kyun | 16 | 
| First Love | Woo Yeon-yi | I Won't Love (사랑 안 해)  | 
Baek Ji-young | 5 | |
| Special | First Love | Coincidence (우연히)  | 
Woo Yeon-yi | — | |
| Final | |||||
| Battle | Pizza & Beer | Lee Jeong-kwon | Previous three songs used as voting standard | 8 | |
| Baby Goat | Jung Seon-ah | Rollin' (롤린)  | 
Brave Girls | 13 | |
| Special | Pizza & Beer | Lee Jeong-kwon | Like Those Powerful Salmons That Come Against the River (거꾸로 강을 거슬러 오르는저 힘찬 연어들처럼)  | 
Kang San-ae | — | 
153rd Generation Mask King
- Contestants: Kang Seung-hee (Wink), Kang Joo-hee (singer, born 1983) (Wink), Gil Byung-min (Letteamor), Ryu Seung-min, Rocky (Astro), Yoon Hyun-sook (Zam), Youme, Sohee (Elris)
 
- Episode 305
 
Episode 305 was broadcast on May 2, 2021. This marks the beginning of the Hundred-fifty-third Generation.[51][52][53]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | Diet | Kang Seung-hee of Wink | Only You Wouldn't Know (너만은 모르길)  | 
As One | 13 | 
| Yo-Yo | Kang Joo-hee of Wink | 8 | |||
| 2nd Song | Yo-Yo | Kang Joo-hee of Wink | Lying on the Sea (바다에 누워)  | 
The Treble Clef | — | 
| Pair 2 | Dragon Palace Wedding Hall | Gil Byung-min of Letteamor | This Is the Moment (Korean version) (지금 이 순간)  | 
Musical Jekyll and Hyde OST | 17 | 
| Mr. Octopus | Ryu Seung-min | 4 | |||
| 2nd Song | Mr. Octopus | Ryu Seung-min | You Can Do It (넌 할 수 있어)  | 
Kang San-ae | — | 
| Pair 3 | The Bad Son Cries | Rocky of Astro | All for You | Cool | 15 | 
| Good Son | Yoon Hyun-sook of Zam | 6 | |||
| 2nd Song | Good Son | Yoon Hyun-sook of Zam | The Pierrot Laughs at Us (삐에로는 우릴 보고 웃지)  | 
Kim Wan-sun | — | 
| Pair 4 | Emerald of May | Youme | One's Way Back (귀로)  | 
Park Seon-joo | 11 | 
| Daisy of May | Sohee of Elris | 10 | |||
| 2nd Song | Daisy of May | Sohee of Elris | Just in Love (꿈을 모아서)  | 
S.E.S. | — | 
- Episode 306
 
Episode 306 was broadcast on May 9, 2021.[54][55]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | Diet | Kang Seung-hee of Wink | Flower Garden (꽃밭에서)  | 
Jung Hoon-hee | 12 | 
| Dragon Palace Wedding Hall | Gil Byung-min of Letteamor | Forever with You (그대와 영원히)  | 
Lee Moon-sae | 9 | |
| Pair 2 | The Bad Son Cries | Rocky of Astro | Hold My Hand (The Greatest Love OST) (내 손을 잡아)  | 
IU | 5 | 
| Emerald of May | Youme | Lost Child (미아)  | 
Lena Park | 16 | |
| Round 3 | |||||
| Finalists | Diet | Kang Seung-hee of Wink | Note of Youthfulness (젊음의 노트)  | 
Yoo Mi-ri | 4 | 
| Emerald of May | Youme | Wild Flower (야생화)  | 
Park Hyo-shin | 17 | |
| Final | |||||
| Battle | Emerald of May | Youme | Previous three songs used as voting standard | 12 | |
| Baby Goat | Jung Seon-ah | Higher | Ailee | 9 | |
154th Generation Mask King
- Contestants: Kim Eun-young, Kang Ye-bin, Mo Tae-bum, Bae Jin-young (CIX), Kim Do-hyun, Lee Young-ji, Choi Byung-seo, Jeon In-hyuk (Yada)
 
- Episode 307
 
Episode 307 was broadcast on May 16, 2021. This marks the beginning of the Hundred-fifty-fourth Generation.[56][57]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | Puzzle | Kim Eun-young | If You're Gonna Be Like This (이럴거면)  | 
Ivy | 20 | 
| Blocks | Kang Ye-bin | 1 | |||
| 2nd Song | Blocks | Kang Ye-bin | Why Don't You Know (왜 모르니)  | 
Byul | — | 
| Pair 2 | Champion | Mo Tae-bum | From January to June (1월부터 6월까지)  | 
015B & Yoon Jong-shin | 2 | 
| Sesame Oil | Bae Jin-young of CIX | 19 | |||
| 2nd Song | Champion | Mo Tae-bum | Marry Me (결혼해줘)  | 
Im Chang-jung | — | 
| Pair 3 | I'm Telling You to Go! | Kim Do-hyun | Lonely | 2NE1 | 5 | 
| I'm Getting Off This Time | Lee Young-ji | 16 | |||
| 2nd Song | I'm Telling You to Go! | Kim Do-hyun | MaMa | Bobby Kim | — | 
| Pair 4 | Hanrabong | Choi Byung-seo | The Woman Outside the Window (창밖의 여자)  | 
Cho Yong-pil | 9 | 
| Ttabong | Jeon In-hyuk of Yada | 12 | |||
| 2nd Song | Hanrabong | Choi Byung-seo | At Andong Station (안동역에서)  | 
Jin Sung | — | 
- Episode 308
 
Episode 308 was broadcast on May 23, 2021.[58][59][60]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | Puzzle | Kim Eun-young | Stop the Time (시간아 멈춰라)  | 
Davichi | 15 | 
| Sesame Oil | Bae Jin-young of CIX | Don't Forget (잊어버리지 마)  | 
Crush ft. Taeyeon | 6 | |
| Pair 2 | I'm Getting Off This Time | Lee Young-ji | After This Night (이 밤이 지나면)  | 
Yim Jae-beom | 3 | 
| Ttabong | Jeon In-hyuk of Yada | Even Tear Drops in Your Eyes (그대 눈물까지도)  | 
Two Two | 18 | |
| Special | I'm Getting Off This Time | Lee Young-ji | I Am Lee Young Ji (나는 이영지)  | 
Lee Young-ji | — | 
| Round 3 | |||||
| Finalists | Puzzle | Kim Eun-young | Through the Night (밤편지)  | 
IU | 10 | 
| Ttabong | Jeon In-hyuk of Yada | Although I Loved You (사랑했지만)  | 
Kim Kwang-seok | 11 | |
| Special | Puzzle | Kim Eun-young | Pit-A-Pat (The Greatest Love OST) (두근두근)  | 
Sunny Hill | — | 
| Final | |||||
| Battle | Ttabong | Jeon In-hyuk of Yada | Previous three songs used as voting standard | 1 | |
| Emerald of May | Youme | Live a Long Long Time (그대가 그대를)  | 
Lee Seung-hwan | 20 | |
155th Generation Mask King
- Contestants: Jang Hyun-chul, Kim Sang-hyuk (Click-B), Kim Seol, Jin Won, Kim Dong-han (WEi), Dong Hyun-bae, Lee Eun-ha, Jang Yoon-jeong
 
- Episode 309
 
Episode 309 was broadcast on May 30, 2021. This marks the beginning of the Hundred-fifty-fifth Generation.[61][62]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | Happiness Does Not Come in Grades | Jang Hyun-chul | Like Rain, Like Music (비처럼 음악처럼)  | 
Kim Hyun-sik | 20 | 
| You're a Student and I'm a Teacher! | Kim Sang-hyuk of Click-B | 1 | |||
| 2nd Song | You're a Student and I'm a Teacher! | Kim Sang-hyuk of Click-B | After Breaking Up (헤어진 후에)  | 
Y2K | — | 
| Pair 2 | Cinderella | Kim Seol | Good Day (좋은 날)  | 
IU | 7 | 
| Mozzarella | Jin Won | 14 | |||
| 2nd Song | Cinderella | Kim Seol | W.H.I.T.E | White | — | 
| Pair 3 | Beware of Dogs | Kim Dong-han of Wei | Only Look at Me (나만 바라봐)  | 
Taeyang | 17 | 
| Be Careful of What you Say | Dong Hyun-bae | 4 | |||
| 2nd Song | Be Careful of What you Say | Dong Hyun-bae | My Only Friend (나만의 친구)  | 
Solid | — | 
| Pair 4 | Girl with Short Hair | Lee Eun-ha | Sparks (불티)  | 
Jeon Young-rok | 20 | 
| Girl with Long Straight Hair | Jang Yoon-jeong | 1 | |||
| 2nd Song | Girl with Long Straight Hair | Jang Yoon-jeong | Some Day (언젠가는)  | 
Lee Tzsche | — | 
- Episode 310
 
Episode 310 was broadcast on June 6, 2021.[63][64]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | Happiness Does Not Come in Grades | Jang Hyun-chul | Heeya (희야)  | 
Boohwal | 12 | 
| Mozzarella | Jin Won | Please Find Her (그녀를 찾아주세요)  | 
The Name | 9 | |
| Pair 2 | Beware of Dogs | Kim Dong-han of Wei | If We (이럴거면 헤어지지 말았어야지)  | 
Park Won | 3 | 
| Girl with Short Hair | Lee Eun-ha | Change | Jo Jang-hyuk | 18 | |
| Round 3 | |||||
| Finalists | Happiness Does Not Come in Grades | Jang Hyun-chul | Delilah (딜라일라)  | 
Jo Young-nam | 3 | 
| Girl with Short Hair | Lee Eun-ha | Beautiful Rivers and Mountains (아름다운 강산)  | 
Shin Jung-hyeon | 18 | |
| Special | Happiness Does Not Come in Grades | Jang Hyun-chul | Walk to the Sky (걸어서 하늘까지)  | 
Jang Hyun-chul | — | 
| Final | |||||
| Battle | Girl with Short Hair | Lee Eun-ha | Previous three songs used as voting standard | 10 | |
| Emerald of May | Youme | Come Back Home | 2NE1 | 11 | |
| Special | Girl with Short Hair | Lee Eun-ha | You Let Me Go with a Smile (Don't Cry for Me) (미소를 띄우며 나를 보낸 그 모습처럼)  | 
Lee Eun-ha | — | 
156th Generation Mask King
- Contestants: Sole (South Korean singer), Yoon Gi-won, Monday (South Korean singer) (Weeekly), Nancy Lang, Yeo Esther, Lee Gyu-seok, Park Min-hye (Big Mama), Choi Byung-chul
 
- Episode 311
 
Episode 311 was broadcast on June 13, 2021. This marks the beginning of the Hundred-fifty-sixth Generation.[65][66][67]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | Shih Tzu | Sole | Love Two (사랑 Two)  | 
Yoon Do-hyun | 17 | 
| Easy | Yoon Gi-won | 4 | |||
| 2nd Song | Easy | Yoon Gi-won | Met Her 100m Away (그녀를 만나는 곳 100m 전)  | 
Lee Sang-woo | — | 
| Pair 2 | Drawing Lots | Monday of Weeekly | Valenti | BoA | 18 | 
| Ladder Riding | Nancy Lang | 3 | |||
| 2nd Song | Ladder Riding | Nancy Lang | 3! 4! | Roo'ra | — | 
| Pair 3 | Parakeet Couple | Yeo Esther | Let's Go Travel (여행을 떠나요)  | 
Cho Yong-pil | 3 | 
| Chicken Skin Couple | Lee Gyu-seok | 18 | |||
| 2nd Song | Parakeet Couple | Yeo Esther | Secret Love (몰래한 사랑)  | 
Kim Ji-ae | — | 
| Pair 4 | Sori-kkun | Park Min-hye of Big Mama | Gather My Tears (내 눈물 모아)  | 
Seo Ji-won | 19 | 
| Lover | Choi Byung-chul | 2 | |||
| 2nd Song | Lover | Choi Byung-chul | Your Shampoo Scent in the Flowers (흔들리는 꽃들 속에서 네 샴푸향이 느껴진거야)  | 
Jang Beom-june | — | 
- Episode 312
 
Episode 312 was broadcast on June 20, 2021.[68][69]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | Shih Tzu | Sole | Solo | Jennie | 11 | 
| Drawing Lots | Monday of Weeekly | How Can I Love the Heartbreak, You're the One I Love (어떻게 이별까지 사랑하겠어, 널 사랑하는 거지)  | 
AKMU | 10 | |
| Pair 2 | Chicken Skin Couple | Lee Gyu-seok | Your Smile in My Memory (미소속에 비친 그대)  | 
Shin Seung-hun | 5 | 
| Sori-kkun | Park Min-hye of Big Mama | Then Something (그런 일은)  | 
Hwayobi | 16 | |
| Special | Chicken Skin Couple | Lee Gyu-seok | Trains and Pine Trees (기차와 소나무)  | 
Lee Gyu-seok | — | 
| Round 3 | |||||
| Finalists | Shih Tzu | Sole | I'm in Love | Ra.D | 4 | 
| Sori-kkun | Park Min-hye of Big Mama | Heaven | Ailee | 17 | |
| Final | |||||
| Battle | Sori-kkun | Park Min-hye of Big Mama | Previous three songs used as voting standard | 16 | |
| Emerald of May | Youme | Don't Be Sad (슬픈 표정 하지 말아요)  | 
Shin Hae-chul | 5 | |
| Special | Emerald of May | Love Is Always Thirsty (사랑은 언제나 목마르다)  | 
Youme | — | |
157th Generation Mask King
- Contestants: Choi Ye-na, KyoungSeo, Lee Ji-hoon, Lee Hoon, Lee Jae-young, Oh Ji-heon, Choi Jung-in, Yang Eun-ji
 
- Episode 313
 
Episode 313 was broadcast on June 27, 2021. This marks the beginning of the Hundred-fifty-seventh Generation.[70][71]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | MBTI | Choi Ye-na | Can't Do (못해)  | 
4Men ft. Mi (美) | 6 | 
| MSG | KyoungSeo | 15 | |||
| 2nd Song | MBTI | Choi Ye-na | Why Don't You Know | Chungha ft. Nucksal | — | 
| Pair 2 | Descendant of the Sun | Lee Ji-hoon | Friends (친구)  | 
Ahn Jae-wook | 17 | 
| Descendant of the Warrior | Lee Hoon | 4 | |||
| 2nd Song | Descendant of the Warrior | Lee Hoon | Side Road (골목길)  | 
Shinchon Blues | — | 
| Pair 3 | Flowers | Lee Jae-young | Aspirin (아스피린)  | 
Girl (걸) | 20 | 
| Mushroom | Oh Ji-heon | 1 | |||
| 2nd Song | Mushroom | Oh Ji-heon | Don't Leave Me (날 떠나지마)  | 
Park Jin-young | — | 
| Pair 4 | Hwachae | Choi Jung-in | Resignation (체념)  | 
Big Mama | 18 | 
| Cold Vegetables | Yang Eun-ji | 3 | |||
| 2nd Song | Cold Vegetables | Yang Eun-ji | I Fell in Love (난 사랑에 빠졌죠)  | 
Park Ji-yoon | — | 
- Episode 314
 
Episode 314 was broadcast on July 4, 2021.[72][73]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | MSG | KyoungSeo | If It Is You (Another Miss Oh OST) (너였다면)  | 
Jung Seung-hwan | 5 | 
| Descendant of the Sun | Lee Ji-hoon | Be Forgotten (잊혀지다)  | 
Jung Key ft. Yang Da-il | 16 | |
| Pair 2 | Flowers | Lee Jae-young | Hahaha Song (하하하쏭)  | 
Jaurim | 3 | 
| Hwachae | Choi Jung-in | One-sided Love (짝사랑)  | 
Gigs | 18 | |
| Special | Blossom | Lee Jae-young | Temptation (유혹)  | 
Lee Jae-young | — | 
| Round 3 | |||||
| Finalists | Descendant of the Sun | Lee Ji-hoon | Don't Be Happy (행복하지 말아요)  | 
MC the Max | 6 | 
| Hwachae | Choi Jung-in | Run With Me (도망가자)  | 
Sunwoo Jung-a | 15 | |
| Final | |||||
| Battle | Hwachae | Choi Jung-in | Previous three songs used as voting standard | 11 | |
| Sori-kkun | Park Min-hye of Big Mama | My Story | Brown Eyed Soul | 10 | |
158th Generation Mask King
- Contestants: Jeong Se-woon, pH-1, Leeds, Kim Young-man, Kim Sa-eun (Musical actress), Lee Sang-byeok, Yoari, Hyebin (Momoland)
 
- Episode 315
 
Episode 315 was broadcast on July 11, 2021. This marks the beginning of the Hundred-fifty-eighth Generation.[74][75][76]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | Butter | Jeong Se-woon | Johnny (자니)  | 
Primary ft. Dynamic Duo | 21 | 
| Center | pH-1 | 0 | |||
| 2nd Song | Center | PH-1 | Expectation (기대)  | 
Na Yoon-kwon | — | 
| Pair 2 | Balloon Flower | Leeds | My Heart Is Near You (내 마음 당신 곁으로)  | 
Kim Jeong-soo | 18 | 
| X-Large | Kim Young-man | 3 | |||
| 2nd Song | X-Large | Kim Young-man | It's You (그건 너)  | 
Lee Jang-hee | — | 
| Pair 3 | Sea Otter | Kim Sa-eun | Label of Love (사랑의 이름표)  | 
Hyun Chul | 15 | 
| Moon of the Sea | Lee Sang-byeok | 6 | |||
| 2nd Song | Moon of the Sea | Lee Sang-byeok | Backdaljae with Tears (울고 넘는 박달재)  | 
Park Jae-hong | — | 
| Pair 4 | Fire Staring | Yoari | Remove all Traces of Time (세월의 흔적 다 버리고)  | 
015B & O.When | 19 | 
| Water Staring | Hyebin of Momoland | 2 | |||
| 2nd Song | Water Staring | Hyebin of Momoland | Password 486 (비밀번호 486)  | 
Younha | — | 
- Episode 316
 
Episode 316 was broadcast on July 18, 2021.[77][78][79]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | Butter | Jeong Se-woon | Who Are You (Guardian: The Lonely and Great God OST)  | 
Sam Kim | 8 | 
| Balloon Flower | Leeds | Don't Go Today (오늘은 가지마)  | 
Im Se-joon | 13 | |
| Pair 2 | Sea Otter | Kim Sa-eun | Hey, Hey, Hey | Jaurim | 3 | 
| Fire Staring | Yoari | Feeling | Kim Sa-rang | 18 | |
| Round 3 | |||||
| Finalists | Balloon Flower | Leeds | 180 Degree (180도)  | 
Ben | 6 | 
| Fire Staring | Yoari | A Person in My Dream (몽중인)  | 
Lena Park | 15 | |
| Special | Balloon Flower | Leeds | You Will Be Happy without Me (그댄 행복에 살텐데)  | 
Leeds | — | 
| Final | |||||
| Battle | Fire Staring | Yoari | Previous three songs used as voting standard | 8 | |
| Hwachae | Choi Jung-in | My Ear's Candy (내귀에 캔디)  | 
Baek Ji-young ft. Taecyeon | 13 | |
159th Generation Mask King
- Contestants: Yang Ji-eun, Kim Jae-yup, Lee Min-hyuk (BtoB), Park Sul-nyeo, Kim Yong-il (UP), Choi Eun-joo, Dahyun (Rocket Punch), Bae Doo-hoon (Forestella)
 
- Episode 317
 
Episode 317 was broadcast on August 8, 2021. This marks the beginning of the Hundred-fifty-ninth Generation.[80][81][82]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Opening | Honey & Baby | Louie & U Sung-eun | In Summer (여름 안에서)  | 
Deux | — | 
| Round 1 | |||||
| Pair 1 | Nightmare | Yang Ji-eun | It's Me (나야 나)  | 
Nam Jin | 19 | 
| Scissors | Kim Jae-yup | 2 | |||
| 2nd Song | Scissors | Kim Jae-yup | Don't Tackle Me (태클을 걸지마)  | 
Jin Sung | — | 
| Pair 2 | Pineapple | Minhyuk of BtoB | With You Everyday (매일 그대와)  | 
Deulgukhwa | 14 | 
| Guava | Park Sul-nyeo | 7 | |||
| 2nd Song | Guava | Park Sul-nyeo | Give Me Back My Youth (청춘을 돌려다오)  | 
Shin Haeng-il | — | 
| Pair 3 | Run to You | Kim Yong-il of UP | Summer Story (여름 이야기)  | 
DJ DOC | 8 | 
| 3!4! | Choi Eun-joo | 13 | |||
| 2nd Song | Run to You | Kim Yong-il of UP | Don't Say Goodbye (안녕이라고 말하지마)  | 
Lee Seung-chul | — | 
| Special | Run to You | The Sea (바다) & Ppuyo Ppuyo (뿌요뿌요)  | 
UP | — | |
| Pair 4 | Girl that Stays at Home a Lot | Dahyun of Rocket Punch | Day by Day | Fly to the Sky | 7 | 
| Non-face-to-face Boyfriend | Bae Doo-hoon of Forestella | 14 | |||
| 2nd Song | Girl that Stays at Home a Lot | Dahyun of Rocket Punch | I Don't Care | 2NE1 | — | 
- Episode 318
 
Episode 318 was broadcast on August 15, 2021.[83][84][85]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | Nightmare | Yang Ji-eun | Trap of Youth (청춘의 덫)  | 
Ji Soo | 16 | 
| Pineapple | Minhyuk of BtoB | Monster | Red Velvet – Irene & Seulgi | 5 | |
| Pair 2 | 3!4! | Choi Eun-joo | Kiss Me | S♯arp | 3 | 
| Non-face-to-face Boyfriend | Bae Doo-hoon of Forestella | Timeless | SG Wannabe | 18 | |
| Round 3 | |||||
| Finalists | Nightmare | Yang Ji-eun | Yeongam Arirang (영암 아리랑)  | 
Ha Choon-hwa | 10 | 
| Non-face-to-face Boyfriend | Bae Doo-hoon of Forestella | Goodbye | Park Hyo-shin | 11 | |
| Final | |||||
| Battle | Non-face-to-face Boyfriend | Bae Doo-hoon of Forestella | Previous three songs used as voting standard | 12 | |
| Hwachae | Choi Jung-in | Fake Love | BTS | 9 | |
160th Generation Mask King
- Contestants: Bae Seung-min (Golden Child), Jay B (Got7), Kwak Beom, Sungmin (Super Junior), Im Sung-eun (Young Turks Club), Christina Confalonieri, Johnny Lee, Park Joon-geum
 
- Episode 319
 
Episode 319 was broadcast on August 22, 2021. This marks the beginning of the Hundred-sixtieth Generation.[86][87][88]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | My House | Seungmin of Golden Child | Fall (어떻게 지내)  | 
Crush | 11 | 
| Toad House | Jay B of Got7 | 10 | |||
| 2nd Song | Toad House | Jay B of Got7 | We Should've Been Friends (친구라도 될걸 그랬어)  | 
Gummy | — | 
| Pair 2 | Military Boots | Kwak Beom | Love | Jo Jang-hyuk | 6 | 
| Rubber Shoes | Sungmin of Super Junior | 15 | |||
| 2nd Song | Military Boots | Kwak Beom | Be Mine (내꺼하자)  | 
Infinite | — | 
| Pair 3 | Harmonica | Im Sung-eun of Young Turks Club | Americano (아메리카노)  | 
10cm | 15 | 
| Recorder | Christina Confalonieri | 6 | |||
| 2nd Song | Recorder | Christina Confalonieri | Eomeona! (어머나!)  | 
Jang Yoon-jeong | — | 
| Pair 4 | Mung-bean Pancake Gentleman | Johnny Lee | I Loved You (사랑했어요)  | 
Kim Hyun-sik | 18 | 
| Florist Lady | Park Joon-geum | 3 | |||
| 2nd Song | Florist Lady | Park Joon-geum | Waiting for Tomorrow (내일을 기다려)  | 
Park Kang-sung | — | 
- Episode 320
 
Episode 320 was broadcast on August 29, 2021.[89][90]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | My House | Seungmin of Golden Child | My House (우리집)  | 
2PM | 5 | 
| Rubber Shoes | Sungmin of Super Junior | One of My People Go (내 하나의 사람은 가고)  | 
Im Hee-sook | 16 | |
| Pair 2 | Harmonica | Im Sung-eun of Young Turks Club | Stigma (낙인)  | 
Yim Jae-beom | 3 | 
| Mung-bean Pancake Gentleman | Johnny Lee | Faraway, My Honey (님은 먼 곳에)  | 
Kim Choo-ja | 18 | |
| Special | Harmonica | Im Sung-eun of Young Turks Club | Affection (Dangerous Breakup) (정 (위험한 이별))  | 
Young Turks Club | — | 
| Round 3 | |||||
| Finalists | Rubber Shoes | Sungmin of Super Junior | Uphill Road (오르막길)  | 
Yoon Jong-shin ft. Jung-in | 3 | 
| Mung-bean Pancake Gentleman | Johnny Lee | Camellia Lady (동백아가씨)  | 
Lee Mi-ja | 18 | |
| Final | |||||
| Battle | Mung-bean Pancake Gentleman | Johnny Lee | Previous three songs used as voting standard | 11 | |
| Non-face-to-face Boyfriend | Bae Doo-hoon of Forestella | Marry Me | Maktub | 10 | |
161st Generation Mask King
- Contestants: Lim Kim, Bae Young-man, Seo In-young, Lee Euaerin (Nine Muses), Kim Ji-hyun (Roo'ra), Wang Ji-hye, Lee Dae-hyung, Park Wan-kyu
 
- Episode 321
 
Episode 321 was broadcast on September 5, 2021. This marks the beginning of the Hundred-sixty-first Generation.[91][92]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | Rocking Chair | Lim Kim | I Always Miss You (나항상 그대를)  | 
Lee Sun-hee | 13 | 
| Rocking Rock | Bae Young-man | 8 | |||
| 2nd Song | Rocking Rock | Bae Young-man | Winter Rain Is Falling (겨울비는 내리고)  | 
Kim Beom-ryong | — | 
| Pair 2 | High Heels | Seo In-young | Something | Girl's Day | 19 | 
| Glass Shoes | Lee Euaerin of Nine Muses | 2 | |||
| 2nd Song | Glass Shoes | Lee Euaerin of Nine Muses | Star (저 별)  | 
Heize | — | 
| Pair 3 | Atlantis Princess | Kim Ji-hyun of Roo'ra | One More Time (한번만 더)  | 
Park Sung-shin | 17 | 
| Bold Woman | Wang Ji-hye | 4 | |||
| 2nd Song | Bold Woman | Wang Ji-hye | After Play (연극이 끝난 후)  | 
S♯arp | — | 
| Pair 4 | Good Morning | Lee Dae-hyung | Endless | Flower | 2 | 
| Good Night | Park Wan-kyu | 19 | |||
| 2nd Song | Good Morning | Lee Dae-hyung | Because You're My Woman (내 여자라니까)  | 
Lee Seung-gi | — | 
- Episode 322
 
Episode 322 was broadcast on September 12, 2021.[93][94][95]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | Rocking Chair | Lim Kim | Flying, Deep in the Night (깊은 밤을 날아서)  | 
Lee Moon-sae | 4 | 
| High Heels | Seo In-young | Sun Sets in My Heart (가슴에 지는 태양)  | 
Kim Bum-soo | 17 | |
| Pair 2 | Atlantis Princess | Kim Ji-hyun of Roo'ra | Love is as Like a Fragile Glass (사랑은 유리 같은 것)  | 
Won Joon-hee | 4 | 
| Good Night | Park Wan-kyu | If I Hold You in My Arms (너를 품에 안으면)  | 
Cult | 17 | |
| Round 3 | |||||
| Finalists | High Heels | Seo In-young | Love, ing (열애중)  | 
Ben | 11 | 
| Good Night | Park Wan-kyu | For You (너를 위해)  | 
Yim Jae-beom | 10 | |
| Final | |||||
| Battle | High Heels | Seo In-young | Previous three songs used as voting standard | 2 | |
| Mung-bean Pancake Gentleman | Johnny Lee | I Lost Love (사랑을 잃어버린 나)  | 
Lee Kwang-jo | 19 | |
Chuseok Special: Duet Mask Kings
- Contestants: Kim Min-seok (MeloMance) & Kim Woo-seok (actor), Kihyun (Monsta X) & Jeong Se-woon, Hong Ji-yoon & Hong Ji-hyun, Lee Min (As One) & Lisa, Kim Tae-gyun & Kim Tae-gyun (Cultwo), Park Hyun-jin & Park Goo-yoon, Yoon Hyung-bin & Jung Kyung-mi, Lee Ji-young (singer) (Big Mama) & Lee Seung-woo (singer) (Soulstar)
 
- Episode 323
 
Episode 323 was broadcast on September 19, 2021.[96] Winner of this special episodes ("Sibling Rebellion") revealed their identities through a special performance on the beginning of episode 327.[97][98]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | Brave Brothers | Kim Min-seok of MeloMance & Kim Woo-seok | And July | Heize ft. Dean ft. DJ Friz | 14 | 
| Cheongdam-dong Brothers-in-law | Kihyun of Monsta X & Jeong Se-woon | 7 | |||
| 2nd Song | Cheongdam-dong Brothers | Kihyun of Monsta X & Jeong Se-woon | Confession (고백)  | 
Jung Joon-il | — | 
| Pair 2 | Okay, Excited Sisters | Hong Ji-yoon & Hong Ji-hyun | On Rainy Days (비가 오는 날엔)  | 
Beast | 14 | 
| Fantastic Partners | Lee Min of As One & Lisa | 7 | |||
| 2nd Song | Fantastic Partners | Lee Min of As One & Lisa | Just a Feeling | S.E.S. | — | 
| Pair 3 | The Fish-Shaped Bun Friend | Former baseball player Kim Tae-gyun & Kim Tae-gyun of Cultwo | You That Meet Unexpectedly (어쩌다 마주친 그대)  | 
Songolmae | 2 | 
| The 25th Generation of a Famous Singer | Park Hyun-jin & Park Goo-yoon | 19 | |||
| 2nd Song | The Fish-Shaped Bun Friend | Former baseball player Kim Tae-gyun & Kim Tae-gyun of Cultwo | That Was What Happened Then (그땐 그랬지)  | 
Carnival | — | 
- Episode 324
 
Episode 324 was broadcast on September 26, 2021.[99][100][101]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 4 | Royal Family | Yoon Hyung-bin & Jung Kyung-mi | I Knew that I Love You (사랑하게 될 줄 알았어)  | 
Shin Hyo-beom | 4 | 
| Sibling Rebellion | Lee Ji-young of Big Mama & Lee Seung-woo of Soulstar | 17 | |||
| 2nd Song | Royal Family | Yoon Hyung-bin & Jung Kyung-mi | The Woman in the Rain (빗속의 여인)  | 
Shin Jung-hyeon | — | 
| Round 2 | |||||
| Special | Mung-bean Pancake Gentleman | Johnny Lee | My Way | Frank Sinatra | — | 
| Pair 1 | Brave Brothers | Kim Min-seok of MeloMance & Kim Woo-seok | Proposal (청혼)  | 
Noel | 16 | 
| Okay, Excited Sisters | Hong Ji-yoon & Hong Ji-hyun | Twinkle | Girls' Generation-TTS | 5 | |
| Pair 2 | The 25th Generation of a Famous Singer | Park Hyun-jin & Park Goo-yoon | Maze of Love (사랑의 미로)  | 
Choi Jin-hee | 6 | 
| Sibling Rebellion | Lee Ji-young of Big Mama & Lee Seung-woo of Soulstar | Timeless | Zhang Liyin ft. Kim Junsu | 15 | |
- Episode 325
 
Episode 325 was broadcast on October 3, 2021.[102][103]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Final | |||||
| Finalists | Brave Brothers | Kim Min-seok of MeloMance & Kim Woo-seok | Like a Child (아이처럼)  | 
Kim Dong-ryool | 3 | 
| Sibling Rebellion | Lee Ji-young of Big Mama & Lee Seung-woo of Soulstar | Hand in Hand (손에 손 잡고)  | 
Koreana | 18 | |
162nd Generation Mask King
- Contestants: Kim Doo-young, Choi Sung-min, Kim Jin-woong (born 1979), Park Hyun-woo, Nada, Hwang Youn-joo, Onesun, Kim Yong-jun (SG Wannabe)
 
- Episode 325
 
Episode 325 was broadcast on October 3, 2021. This marks the beginning of the Hundred-sixty-second Generation.[104][105][103]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | Striker | Kim Doo-young | Confession (고백)  | 
Park Hye-kyung | 3 | 
| Defender | Choi Sung-min | 18 | |||
| 2nd Song | Striker | Kim Doo-young | Forever (영원히)  | 
N.EX.T | — | 
| Pair 2 | Umbrella | Kim Jin-woong | Tearful Farewell (뜨거운 안녕)  | 
Johnny Lee | 10 | 
| Woojangsan | Park Hyun-woo | 11 | |||
| 2nd Song | Umbrella | Kim Jin-woong | Sonata of Temptation (유혹의 소나타)  | 
Ivy | — | 
| Pair 3 | Red Flavor | Nada | Beautiful | Beast | 18 | 
| Mild Taste | Hwang Youn-joo | 3 | |||
| 2nd Song | Mild Taste | Hwang Youn-joo | Farewell for Me (날 위한 이별)  | 
Kim Hye-rim | — | 
- Episode 326
 
Episode 326 was broadcast on October 10, 2021.[106][107]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 4 | Thunder and Lightning | Onesun | I Miss You | Kang Susie | 1 | 
| Thunder Tiger | Kim Yong-jun of SG Wannabe | 20 | |||
| 2nd Song | Thunder and Lightning | Onesun | Dream (꿈)  | 
Lee Hyun-woo | — | 
| Round 2 | |||||
| Pair 1 | Defender | Choi Sung-min | Waiting (작은 기다림)  | 
Cool | 10 | 
| Woojangsan | Park Hyun-woo | To Be Alone (홀로 된다는 것)  | 
Byun Jin-sub | 11 | |
| Pair 2 | Red Flavor | Nada | With Me | Wheesung (Realslow) | 2 | 
| Thunder Tiger | Kim Yong-jun of SG Wannabe | Love Affair | Im Chang-jung | 19 | |
| Round 3 | |||||
| Finalists | Woojangsan | Park Hyun-woo | Empty Heart (허무한 마음)  | 
Jeong Won | 2 | 
| Thunder Tiger | Kim Yong-jun of SG Wannabe | Distant Memories of You (기억 속의 먼 그대에게)  | 
Park Mi-kyung | 19 | |
| Final | |||||
| Battle | Thunder Tiger | Kim Yong-jun of SG Wannabe | Previous three songs used as voting standard | 3 | |
| Mung-bean Pancake Gentleman | Johnny Lee | You Lived Like a Fool (바보처럼 살았군요)  | 
Kim Do-hyang | 18 | |
163rd Generation Mask King
- Contestants: N/A, Julian Jootaek Kim (Miraclass), Cho Gu-ham, Oh Sang-uk, Kim Young-ok, Maria, Lee Ye-joon, Carlos Galvan (Uptown)
 
- Episode 327
 
Episode 327 was broadcast on October 17, 2021. This marks the beginning of the Hundred-sixty-third Generation.[98][108][109][110]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Special | Sibling Rebellion | Lee Ji-young of Big Mama & Lee Seung-woo of Soulstar | This Is Me | Keala Settle & The Greatest Showman Ensemble | — | 
| Round 1 | |||||
| Pair 1 | Always Hits the Mark | — | — | — | — | 
| Unbeaten | Kim Joo-taek of Miraclass | — | |||
| 2nd Song | Always Hits the Mark | — | — | — | — | 
| Pair 2 | Fate Symphony | Cho Gu-ham | Dear Love (사랑아)  | 
The One | 17 | 
| Chopsticks March | Oh Sang-uk | 4 | |||
| 2nd Song | Chopsticks March | Oh Sang-uk | Think of You (네 생각)  | 
John Park | — | 
| Pair 3 | Nacho | Kim Young-ok | Sad Story of Old Couple (어느 60대 노부부 이야기)  | 
Kim Mok-kyung | 7 | 
| Tortilla | Maria | 14 | |||
| 2nd Song | Nacho | Kim Young-ok | Empty Space (허공)  | 
Cho Yong-pil | — | 
| Pair 4 | Bear Sole | Lee Ye-joon | Holding the End of this Night (이 밤의 끝을 잡고)  | 
Solid | 20 | 
| Cow's Feet | Carlos Galvan of Uptown | 1 | |||
| 2nd Song | Cow's Feet | Carlos Galvan of Uptown | A-Yo | Jinusean | — | 
| Special | Cow Sole | Back to Me (다시 만나줘)  | 
Uptown | — | |
- Episode 328
 
Episode 328 was broadcast on October 24, 2021.[111][112][113]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | Unbeaten | Kim Joo-taek of Miraclass | Back in Time (시간을 거슬러)  | 
Lyn | 11 | 
| Fate Symphony | Cho Gu-ham | Like It (좋니)  | 
Yoon Jong-shin | 10 | |
| Pair 2 | Tortilla | Maria | We Meet Again (또 만났네요)  | 
Joo Hyun-mi | 0 | 
| Bear Sole | Lee Ye-joon | Hello | Huh Gak | 21 | |
| Special | Tortilla | Maria | Crying in Regret (English version) (울면서 후회하네)  | 
Joo Hyun-mi | — | 
| Round 3 | |||||
| Finalists | Unbeaten | Kim Joo-taek of Miraclass | So You (그래서 그대는)  | 
Yarn | 4 | 
| Bear Sole | Lee Ye-joon | Forsake (연)  | 
Big Mama | 17 | |
| Final | |||||
| Battle | Bear Sole | Lee Ye-joon | Previous three songs used as voting standard | 18 | |
| Mung-bean Pancake Gentleman | Johnny Lee | Going Years (가는 세월)  | 
Seo Yoo-seok | 3 | |
| Special | Mung-bean Pancake Gentleman | Tearful Farewell (뜨거운 안녕) Love Fool (바보 사랑)  | 
Johnny Lee | — | |
164th Generation Mask King
- Contestants: Yukika, Lee Hyun (5tion), Hwang Soo-kyung, Won Mi-yeon, Kim Sang-woo (Shinchon Blues), Jo Choon, Yang Jeong-won, Kim Jae-hwan
 
- Episode 329
 
Episode 329 was broadcast on October 31, 2021. This marks the beginning of the Hundred-sixty-fourth Generation.[114][115][116]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | Tagger | Yukika | It's You (그대네요)  | 
Sung Si-kyung & IU | 2 | 
| Cubed Radish Kimchi | Lee Hyun of 5tion | 19 | |||
| 2nd Song | Tagger | Yukika | Umbrella (우산)  | 
Younha | — | 
| Pair 2 | Amor Fati | Hwang Soo-kyung | You Let Me Go with a Smile (Don't Cry for Me) (미소를 띄우며 나를 보낸 그 모습처럼)  | 
Lee Eun-ha | 1 | 
| Happy Halloween | Won Mi-yeon | 20 | |||
| 2nd Song | Amor Fati | Hwang Soo-kyung | Unpredictable Life (알 수 없는 인생)  | 
Lee Moon-sae | — | 
| Pair 3 | Unbelievable | Kim Sang-woo of Shinchon Blues | For Love (사랑을 위하여)  | 
Kim Jong-hwan | 17 | 
| Perfection | Jo Choon | 4 | |||
| 2nd Song | Perfection | Jo Choon | Chan Chan Chan (찬찬찬)  | 
Pyeon Seung-yeop | — | 
| Pair 4 | Fairy of Shampoo | Yang Jeong-won | Butterfly (나비야)  | 
Ha Dong-kyun | 2 | 
| Ending Fairy | Kim Jae-hwan | 19 | |||
| Special | Ha Dong-kyun | — | |||
| 2nd Song | Fairy of Shampoo | Yang Jeong-won | I'm Your Girl | S.E.S. | — | 
- Episode 330
 
Episode 330 was broadcast on November 7, 2021.[117][118][119]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | Cubed Radish Kimchi | Lee Hyun of 5tion | Sea of Love | Fly to the Sky | 4 | 
| Happy Halloween | Won Mi-yeon | Remaining (미련)  | 
Kim Gun-mo | 17 | |
| Special | Cubed Radish Kimchi | Lee Hyun of 5tion | More Than Words | 5tion | — | 
| Pair 2 | Unbelievable | Kim Sang-woo of Shinchon Blues | Pick Me (나야 나)  | 
Produce 101 | 7 | 
| Ending Fairy | Kim Jae-hwan | Next Level | Aespa | 14 | |
| Round 3 | |||||
| Finalists | Happy Halloween | Won Mi-yeon | 365 Days (365일)  | 
Ali | 17 | 
| Ending Fairy | Kim Jae-hwan | Walking Along (걷고 싶다)  | 
Cho Yong-pil | 4 | |
| Final | |||||
| Battle | Happy Halloween | Won Mi-yeon | Previous three songs used as voting standard | 6 | |
| Bear Sole | Lee Ye-joon | Train to the World (세계로 가는 기차)  | 
Deulgukhwa | 15 | |
| Special | Happy Halloween | Won Mi-yeon | Farewell Trip (이별여행)  | 
Won Mi-yeon | — | 
165th Generation Mask King
- Contestants: Linzy (Fiestar), Kim Kyung-ah, Kim Tae-sul, John Noh (RabidAnce), Yoo Mi-ri, Park Kang-sung, Kim Heung-soo, Chunja
 
- Episode 331
 
Episode 331 was broadcast on November 14, 2021. This marks the beginning of the Hundred-sixty-fifth Generation.[120][121][122]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | One-off Payment | Linzy of Fiestar | Love | S.E.S. | 17 | 
| Spoonworm | Kim Kyung-ah | 4 | |||
| 2nd Song | Spoonworm | Kim Kyung-ah | Two of Us (둘이서)  | 
Lee Chae-yeon | — | 
| Pair 2 | Buckwheat Flowers | Kim Tae-sul | Don't Go, Don't Go (가지마 가지마)  | 
Brown Eyes | 6 | 
| Camellia Flower | John Noh of RabidAnce | 15 | |||
| 2nd Song | Buckwheat Flowers | Kim Tae-sul | Do You Want to Walk with Me? (나랑 같이 걸을래 (바른연애 길잡이 X 적재))  | 
Jukjae | — | 
| Pair 3 | A Woman who Looks Good in Jeans | Yoo Mi-ri | Wishes (희망사항)  | 
Byun Jin-sub | 5 | 
| A Man who Cooks Well Kimchi Fried Rice | Park Kang-sung | 16 | |||
| 2nd Song | A Woman who Looks Good in Jeans | Yoo Mi-ri | Shaky Friendship (흔들린 우정)  | 
Hong Kyung-min | — | 
| Special | A Woman who Looks Good in Jeans | Note of Youthfulness (젊음의 노트)  | 
Yoo Mi-ri | — | |
| Pair 4 | Cheer Up, Test-takers! | Kim Heung-soo | Traffic Light (신호등)  | 
Lee Mu-jin | 6 | 
| Boss, Nice Shot! | Chunja | 15 | |||
| 2nd Song | Cheer Up, Test-takers! | Kim Heung-soo | Beautiful Fact (아름다운 사실)  | 
Boohwal | — | 
- Episode 332
 
Episode 332 was broadcast on November 21, 2021.[123][124]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | One-off Payment | Linzy of Fiestar | Sending Love (송애)  | 
Esther | 13 | 
| Camellia Flower | John Noh of RabidAnce | The Unwritten Legend (전설속의 누군가처럼)  | 
Shin Seung-hun | 8 | |
| Pair 2 | A Man who Cooks Well Kimchi Fried Rice | Park Kang-sung | About Romance (낭만에 대하여)  | 
Choi Baek-ho | 5 | 
| Boss, Nice Shot! | Chunja | My Love by My Side (내 사랑 내 곁에)  | 
Kim Hyun-sik | 16 | |
| Special | A Man who Cooks Well Kimchi Fried Rice | Park Kang-sung | Toy Soldiers (장난감 병정)  | 
Park Kang-sung | — | 
| Round 3 | |||||
| Finalists | One-off Payment | Linzy of Fiestar | One Woman (한 여자)  | 
Ben | 11 | 
| Boss, Nice Shot! | Chunja | Knees (무릎)  | 
IU | 10 | |
| Final | |||||
| Battle | One-off Payment | Linzy of Fiestar | Previous three songs used as voting standard | 1 | |
| Bear Sole | Lee Ye-joon | Alone (홀로)  | 
Jung Key & Kim Na-young | 20 | |
166th Generation Mask King
- Contestants: An Yu-jin (Ive), Z-E (rapper) (Turtles), Jeon Cheol-woo, Im Hyung-soon (Five Fingers), Shin Ye-chan (singer) (Lucy), Im Hyuk-pil, Kwon Soon-woo, Rumble Fish
 
- Episode 333
 
Episode 333 was broadcast on November 28, 2021. This marks the beginning of the Hundred-sixty-sixth Generation.[125][126][127]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | Olivia Hussey | An Yu-jin of Ive | Goodbye (안녕)  | 
Park Hye-kyung | 13 | 
| Beyoncé | Z-E of Turtles | 8 | |||
| 2nd Song | Beyoncé | Z-E of Turtles | I Will Love You (사랑할거야)  | 
Baby Angel | — | 
| Pair 2 | Pork Back-bone Stew | Jeon Cheol-woo | I Like Saturday Night (토요일은 밤이 좋아)  | 
Kim Jong-chan | 5 | 
| Fish Cake Soup | Im Hyung-soon of Five Fingers | 16 | |||
| 2nd Song | Pork Back-bone Stew | Jeon Cheol-woo | Said (라구요)  | 
Kang San-ae | — | 
| Pair 3 | I Fall in Love Easily | Shin Ye-chan of Lucy | In Front of the Post Office in Autumn (가을 우체국 앞에서)  | 
Kim Hyun-sung | 18 | 
| Green Light | Im Hyuk-pil | 3 | |||
| 2nd Song | Green Light | Im Hyuk-pil | Spring Days of My Life (내 생애 봄날은)  | 
Can | — | 
| Pair 4 | Driving By a Beginner | Kwon Soon-woo | Whistle (휘파람)  | 
Lee Moon-sae | 0 | 
| Driver's License | Rumble Fish | 21 | |||
| 2nd Song | Driving By a Beginner | Kwon Soon-woo | The Road to Me (내게 오는 길)  | 
Sung Si-kyung | — | 
- Episode 334
 
Episode 334 was broadcast on December 5, 2021.[128][129][130]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | Olivia Hussey | An Yu-jin of Ive | Nappa (나빠)  | 
Crush | 4 | 
| Fish Cake Soup | Im Hyung-soon of Five Fingers | Moment Seeing First Time (처음 본 순간)  | 
Songolmae | 17 | |
| Pair 2 | I Fall in Love Easily | Shin Ye-chan of Lucy | Because I Love You (사랑하기 때문에)  | 
Yoo Jae-ha | 5 | 
| Driver's License | Rumble Fish | Nocturne (야상곡)  | 
Kim Yoon-ah | 16 | |
| Round 3 | |||||
| Finalists | Fish Cake Soup | Im Hyung-soon of Five Fingers | Sad Beatrice (슬픈 베아트리체)  | 
Cho Yong-pil | 8 | 
| Driver's License | Rumble Fish | Turn on the Radio Loudly (크게 라디오를 켜고)  | 
Sinawe | 13 | |
| Special | Fish Cake Soup | Im Hyung-soon of Five Fingers | Balloon (풍선)  | 
Five Fingers | — | 
| Final | |||||
| Battle | Driver's License | Rumble Fish | Previous three songs used as voting standard | 5 | |
| Bear Sole | Lee Ye-joon | Are You Listening? (듣고 있나요)  | 
Lee Seung-chul | 16 | |
167th Generation Mask King
- Contestants: Kim Myung-seon, Jo Seung-goo, Bang Eun-hee, Joo Byung-seon, Mirani, Ryuji (singer) (Broccoli, You Too?), Lee Mu-jin, Choi Joon-suk
 
- Episode 335
 
Episode 335 was broadcast on December 12, 2021. This marks the beginning of the Hundred-sixty-seventh Generation.[131][132]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 1 | |||||
| Pair 1 | Let It Go | Kim Myung-seon | Only Just (뿐이고)  | 
Park Goo-yoon | 4 | 
| Let It Be | Jo Seung-goo | 17 | |||
| 2nd Song | Let It Go | Kim Myung-seon | Ring Ring (따르릉)  | 
Hong Jin-young | — | 
| Pair 2 | Shopping Basket | Bang Eun-hee | Happy Our Love (기쁜 우리 사랑은)  | 
Choi Sung-soo | 3 | 
| Bookmark | Joo Byung-seon | 18 | |||
| 2nd Song | Shopping Basket | Bang Eun-hee | Seoul Tango (서울 탱고)  | 
Bang Sil-yi | — | 
| Pair 3 | The Game of Go | Mirani | What Do I Do? (어떡하죠)  | 
2AM | 0 | 
| Puppy | Ryuji of Broccoli You Too | 21 | |||
| 2nd Song | The Game of Go | Mirani | Rooftop (옥탑방)  | 
N.Flying | — | 
| Pair 4 | Winter Kid | Lee Mu-jin | Fate (인연)  | 
Lee Seung-chul | 18 | 
| Winter Sea | Choi Joon-suk | 3 | |||
| 2nd Song | Winter Sea | Choi Joon-suk | My Woman (내 여자)  | 
The One | — | 
- Episode 336
 
Episode 336 was broadcast on December 19, 2021.[133][134]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Round 2 | |||||
| Pair 1 | Let It Be | Jo Seung-goo | At Any Time (무시로)  | 
Na Hoon-a | 9 | 
| Bookmark | Joo Byung-seon | Seoul Seoul Seoul (서울 서울 서울)  | 
Cho Yong-pil | 12 | |
| Special | Let It Be | Jo Seung-goo | Wind Flower Girl (꽃바람 여인)  | 
Jo Seung-goo | — | 
| Pair 2 | Puppy | Ryuji of Broccoli You Too | Let's Forget About It (이젠 잊기로 해요)  | 
Kim Wan-sun | 0 | 
| Winter Kid | Lee Mu-jin | With You (그대랑)  | 
Lee Juck | 21 | |
| Round 3 | |||||
| Finalists | Bookmark | Joo Byung-seon | The Yoke (멍에)  | 
Kim Soo-hee | 3 | 
| Winter Kid | Lee Mu-jin | To You Again (너에게로 또 다시)  | 
Byun Jin-sub | 18 | |
| Special | Bookmark | Joo Byung-seon | Mt. Chilgab (칠갑산)  | 
Joo Byung-seon | — | 
| Final | |||||
| Battle | Winter Kid | Lee Mu-jin | Previous three songs used as voting standard | 13 | |
| Bear Sole | Lee Ye-joon | Left & Right | Seventeen | 8 | |
168th Generation Mask King
- Contestants: Thunder, Danny Koo, Kim Sung-kyung, Kim Jang-soo (The Treble Clef), Bae Yoon-jeong, Rhee Dae-eun, Lee Kyung-ae, Kim Hye-yeon (South Korean singer)
 
Episode 337 was broadcast on December 26, 2021. This marks the beginning of the Hundred-sixty-eighth Generation.[135][136][137][138]
| Order | Stage Name | Real Name | Song | Original artist | Vote | 
|---|---|---|---|---|---|
| Opening | Chow Yun-fat | Seungyoon of Winner | Bounce | Cho Yong-pil | — | 
| Round 1 | |||||
| Pair 1 | Rudolph the Red Nosed Reindeer | Thunder | Instinctively (본능적으로)  | 
Yoon Jong-shin | 16 | 
| Arrow Nose | Danny Koo | 5 | |||
| 2nd Song | Arrow Nose | Danny Koo | Don't Say It's Not Love (사랑이 아니라 말하지 말아요)  | 
Lee So-ra | — | 
| Pair 2 | Tiger | Kim Sung-kyung | Somebody's Dream (어떤이의 꿈)  | 
Bom Yeoreum Gaeul Kyeoul | 1 | 
| Dad | Kim Jang-soo of The Treble Clef | 20 | |||
| 2nd Song | Tiger | Kim Sung-kyung | You're in My Embrace (그대 내 품에)  | 
Yoo Jae-ha | — | 
| Pair 3 | Graduation Photo | Bae Yoon-jeong | White Winter (하얀 겨울)  | 
Mr. 2 | 12 | 
| Family Photo | Rhee Dae-eun | 9 | |||
| 2nd Song | Family Photo | Rhee Dae-eun | Confession Is Not Flashy (화려하지 않은 고백)  | 
Lee Seung-hwan | — | 
| Pair 4 | Be Careful Not to Catch a Cold! | Lee Kyung-ae | The First Snow's Falling (첫눈이 온다구요)  | 
Lee Jeong-seok | 4 | 
| Everyone, Be Rich! | Kim Hye-yeon | 17 | |||
| 2nd Song | Be Careful Not to Catch a Cold! | Lee Kyung-ae | Spring Rain (봄비)  | 
Lee Eun-ha | — | 
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 - ^ Lee Ah-young (June 13, 2021). "윤기원X낸시랭X여에스더X최병철, 개성으로 똘똘 뭉쳤다(종합)". News1 (in Korean). Retrieved June 13, 2021.
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 - ^ Lee Ah-young (August 22, 2021). "제이비X곽범X크리스티나X박준금, 개성 만점 음색 총출동(종합)". News1 (in Korean). Retrieved August 22, 2021.
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 - ^ Lee Ah-young (September 26, 2021). "용감한 형제&형제의 난 3라운드 진출…부부·자매·부자 듀엣(종합)". News1 (in Korean). Retrieved September 26, 2021.
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 - ^ Lee Ah-young (October 3, 2021). "김두영X김진웅X황연주, 아쉬운 탈락…형제의 난 듀엣 가왕 등극(종합)". News1 (in Korean). Retrieved October 3, 2021.
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 - ^ Lee Ah-young (October 17, 2021). "오상욱·김영옥·카를로스 1R 탈락…듀엣 가왕 이지영·이승우(종합)". News1 (in Korean). Retrieved October 17, 2021.
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 - ^ Lee Ah-young (October 24, 2021). "곰발바닥, 163대 가왕 등극…빈대떡 신사는 쟈니 리(종합)". News1 (in Korean). Retrieved October 24, 2021.
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 - ^ Jung Han-bi (October 31, 2021). "'복면가왕' 최고령 조춘→유키카…나이, 국적 잊게 한 도전 정신으로 무대 채웠다(종합)". Herald Pop (in Korean). Retrieved October 31, 2021.
 - ^ Lee Ah-young (October 31, 2021). "'1R 탈락' 유키카·황수경·조춘·양정원, 여한 없이 매력 발산(종합)". News1 (in Korean). Retrieved October 31, 2021.
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 - ^ Lee Yi-jin (November 7, 2021). "곰발바닥 2연승…이현X김승우X김재환X원미연 정체 공개 (복면가왕)[종합]". Xports News (in Korean). Retrieved November 7, 2021.
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 - ^ Lee Ah-young (November 14, 2021). "김경아·김태술·유미리·김흥수, 가면으로 가려지지 않는 끼(종합)". News1 (in Korean). Retrieved November 14, 2021.
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 - ^ Lee Yi-jin (November 21, 2021). "곰발바닥 3연승 성공…존 노X박강성X춘자X린지 정체 공개 (복면가왕) [종합]". Xports News (in Korean). Retrieved November 23, 2021.
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 - ^ Lee Ah-young (November 28, 2021). "거북이 지이→권순우, 앞으로가 더 기대되는 팔방미인들(종합)". News1 (in Korean). Retrieved November 28, 2021.
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