| Name | Type | Role | |
|---|---|---|---|
| Lee Sang-yeon | Guest Star | Sangyeon | |
| Ji Chang-min | Guest Star | Q | |
| Ju Hak-nyeon | Guest Star | Ju Haknyeon | |
| Lee Jae-hyun | Guest Star | Hyunjae | |
| Moon Hyung-seo | Guest Star | Kevin | |
| Lee Ju-yun | Guest Star | Juyeon | |
| Bae Joon-young | Guest Star | Jacob | |
| THE BOYZ | Guest Star | ||
| Kim Sun-woo | Guest Star | Sunwoo | |
| Choi Chan-hee | Guest Star | New | |
| Eric | Guest Star | Eric | |
| Younghoon | Guest Star | Younghoon |