| Name | Character | Episodes |
|---|---|---|
| Lee Beom-soo | Jang Ki-jun | 21 |
| Lee Sung-min | Song Soo-chul | 21 |
| Kim Ha-neul | Oh Seung-ah | 21 |
| Kang Hye-jung | herself | 2 |
| Lee Sun-kyun | himself | 1 |
| Yoon Se-a | screenwriter | 1 |
| Bae Jong-ok | herself | 1 |
| Kim Min-jun | himself | 1 |
| Lee Hyo-ri | herself | 1 |
| Lee Chun-hee | himself | 1 |
| Kim Je-dong | himself | 1 |
| Park Si-yeon | herself | 1 |