| Name | Type | Role | |
|---|---|---|---|
| Eric | Musical Guest | The Boyz - Eric | |
| Kim Ji-soo | Musical Guest | Blackpink - Jisoo | |
| DK | Musical Guest | iKon - DK | |
| Ahn Ji-young | Musical Guest | Bolbbalgan4 - Jiyoung | |
| Heo Hyun-joon | Musical Guest | The Boyz - Hwall | |
| Son Na-eun | Musical Guest | Apink - Naeun | |
| Yook Sung-jae | Musical Guest | BtoB - Sungjae | |
| Jung Eun-bi | Musical Guest | GFriend - Eunha | |
| Peniel Shin | Musical Guest | BtoB - Peniel | |
| Lee Joo-won | Musical Guest | Momoland - JooE | |
| SUGA | Musical Guest | BTS - Suga | |
| BTS | Musical Guest | ||
| Choi Chan-hee | Musical Guest | The Boyz - New | |
| Seo Soo-jin | Musical Guest | (G)I-dle - Soojin | |
| Kim Jae-hwan | Musical Guest | Wanna One - Jaehwan | |
| Jung Ye-rin | Musical Guest | GFriend - Yerin | |
| Bae Joon-young | Musical Guest | The Boyz - Jacob | |
| Kim Na-yun | Musical Guest | Momoland - Nayun | |
| Park Cho-rong | Musical Guest | Apink - Chorong | |
| Yeh Shuhua | Musical Guest | (G)I-dle - Shuhua | |
| Jeon So-yeon | Musical Guest | (G)I-dle - Soyeon | |
| Jung Whee-in | Musical Guest | Mamamoo - Wheein | |
| Kim Nam-joo | Musical Guest | Apink - Namjoo | |
| Lee Dae-hwi | Musical Guest | Wanna One - Daehwi | |
| Moon Hyung-seo | Musical Guest | The Boyz - Kevin | |
| Lee Sang-yeon | Musical Guest | The Boyz - Sangyeon | |
| Choi Yu-na | Musical Guest | GFriend - Yuju | |
| Lee Hye-bin | Musical Guest | Momoland - Hyebin | |
| V | Musical Guest | BTS - V | |
| Lee Ah-in | Musical Guest | Momoland - Ahin | |
| Song Yun-hyeong | Musical Guest | iKon - Song | |
| Ji Chang-min | Musical Guest | The Boyz - Q | |
| Koo Jun-hoe | Musical Guest | iKon - Ju-ne | |
| Ha Sung-woon | Musical Guest | Wanna One - Sungwoon | |
| Jeong Eun-ji | Musical Guest | Apink - Eunji | |
| Kim Jennie | Musical Guest | Blackpink - Jennie | |
| Yoo Jung-ahn | Musical Guest | Momoland - Daisy | |
| Roy Kim | Musical Guest | Roy Kim | |
| Seo Eun-kwang | Musical Guest | BtoB - Eunkwang | |
| Solar | Musical Guest | Mamamoo - Solar | |
| Hwang Min-hyun | Musical Guest | Wanna One - Minhyun | |
| Kim Ye-won | Musical Guest | GFriend - Umji | |
| Lai Guanlin | Musical Guest | Wanna One - Kuanlin | |
| Kim So-jung | Musical Guest | GFriend - Sowon | |
| Woo Ji-yoon | Musical Guest | Bolbbalgan4 - Jiyoon | |
| Lee Min-hyuk | Musical Guest | BtoB - Minhyuk | |
| Nancy Jewel Mcdonie | Musical Guest | Momoland - Nancy | |
| Jung Chan-woo | Musical Guest | iKon - Chan | |
| Kim Jin-hwan | Musical Guest | iKon - Jay | |
| Lalisa Manobal | Musical Guest | Blackpink - Lisa | |
| Jung Kook | Musical Guest | BTS - Jungkook | |
| Younghoon | Musical Guest | The Boyz - Younghoon | |
| Bae Jin-young | Musical Guest | Wanna One - Jinyoung | |
| Kim Tae-ha | Musical Guest | Momoland - Taeha | |
| Yoon Ji-sung | Musical Guest | Wanna One - Jisung | |
| Park Woo-jin | Musical Guest | Wanna One - Woojin | |
| Kim Han-bin | Musical Guest | iKon - B.I | |
| Lee Chang-sub | Musical Guest | BtoB - Changsub | |
| Lee Ju-yun | Musical Guest | The Boyz - Juyeon | |
| Hong Jin-young | Musical Guest | Hong Jin-young | |
| j-hope | Musical Guest | BTS - J-Hope | |
| Hwasa | Musical Guest | Mamamoo - Hwasa | |
| Hwang Eun-bi | Musical Guest | GFriend - SinB | |
| Kang Daniel | Musical Guest | Wanna One - Daniel | |
| Song Yuqi | Musical Guest | (G)I-dle - Yuqi | |
| Nicha Yontararak | Musical Guest | (G)I-dle - Minnie | |
| Rosé | Musical Guest | Blackpink - Rosé | |
| Kim Sun-woo | Musical Guest | The Boyz - Sunwoo | |
| Ong Seong-wu | Musical Guest | Wanna One - Seongwu | |
| Oh Ha-young | Musical Guest | Apink - Hayoung | |
| Ju Hak-nyeon | Musical Guest | The Boyz - Ju Haknyeon | |
| Yeon-woo | Musical Guest | Momoland - Yeonwoo | |
| Jung Il-hoon | Musical Guest | BtoB - Ilhoon | |
| Im Hyun-sik | Musical Guest | BtoB - Hyunsik | |
| Sung Ji-yeon | Musical Guest | Momoland - Jane | |
| RM | Musical Guest | BTS - RM | |
| Kim Ji-won | Musical Guest | iKon - Bobby | |
| Jin | Musical Guest | BTS - Jin | |
| Cho Mi-yeon | Musical Guest | (G)I-dle - Miyeon | |
| Lee Jae-hyun | Musical Guest | The Boyz - Hyunjae | |
| Yoon Bo-mi | Musical Guest | Apink - Bomi | |
| Jimin | Musical Guest | BTS - Jimin | |
| Moon Byul | Musical Guest | Mamamoo - Moonbyul | |
| Park Ji-hoon | Musical Guest | Wanna One - Jihoon | |
| Lee Sang-yoon | Guest Star | Presenter for Song of the Year (Daesang) | |
| Lee Yu-bi | Guest Star | Presenter for Top 10 Artists (Bol4 and Wanna One) | |
| Ha Sung-woon | Guest Star | Presenter for Best New Artists | |
| Jeon So-nee | Guest Star | Presenter for Dance War and 1theK Performance Award | |
| Eric | Guest Star | Presenter for 10th Anniversary Best Song | |
| Nam Ji-hyun | Guest Star | Presenter for Top 10 Artists (BTS and iKon) | |
| Park Sung-kwang | Guest Star | Presenter for Kakao Hot Star Award | |
| Bae Jin-young | Guest Star | Presenter for Best New Artists | |
| Lee Dong-wook | Guest Star | Presenter for Album of the Year (Daesang) | |
| Hwang Min-hyun | Guest Star | Presenter for Best New Artists | |
| Ryu Hyun-jin | Guest Star | Presenter for Global Artist | |
| Lee Sang-yeob | Guest Star | Presenter for Best Ballad and Best Rap / Hiphop | |
| Jeon So-yeon | Guest Star | Presenter for 10th Anniversary Best Song | |
| Hong Kyung | Guest Star | Presenter for Dance War and 1theK Performance Award | |
| Jung Da-bin | Guest Star | Presenter for Kakao Hot Star Award | |
| Lee Dae-hwi | Guest Star | Presenter for Best New Artists | |
| Go Soo | Guest Star | Presenter for Record of the Year (Daesang) | |
| Lee Young-ja | Guest Star | Presenter for Netizen Popularity Award | |
| Kim Jae-hwan | Guest Star | Presenter for Best New Artists | |
| Kim Hee-jung | Guest Star | Presenter for Best Ballad and Best Rap / Hiphop | |
| Kim Han-bin | Guest Star | Opening | |
| Jung So-min | Guest Star | Presenter for Top 10 Artists (Blackpink and BtoB) | |
| Shin Seung-ho | Guest Star | Presenter for Hot Trend Award | |
| Park Ji-hoon | Guest Star | Presenter for Best New Artists | |
| Lee Byung-hun | Guest Star | Presenter for Artist of the Year (Daesang) | |
| Choi Daniel | Guest Star | Presenter for Top 10 Artists (Apink and Mamamoo) | |
| Ong Seong-wu | Guest Star | Presenter for Best New Artists | |
| Kim Ho-young | Guest Star | Presenter for Best of Dance Performance | |
| Kang Daniel | Guest Star | Presenter for Best New Artists | |
| Son Tae-young | Guest Star | Presenter for Song of the Year (Daesang) | |
| Kim Yong-ji | Guest Star | Presenter for Hot Trend Award | |
| Lai Guanlin | Guest Star | Presenter for Best New Artists | |
| Lee Yeon-hee | Guest Star | Presenter for Best Song Writer | |
| Park Woo-jin | Guest Star | Presenter for Best New Artists | |
| Yoon Ji-sung | Guest Star | Presenter for Best New Artists | |
| Bae Jung-Nam | Guest Star | Presenter for Best of Dance Performance |