| Name | Character | Episodes |
|---|---|---|
| Yoo Jae-suk | Main MC | 181 |
| Kim Je-dong | MC/Team Leader | 158 |
| Sung Si-kyung | Himself | 17 |
| Joon Park | Himself (as Park Joon-hyung) | 7 |
| Yûko Fueki | Herself (as Yoo Min) | 6 |
| Park Ye-jin | 6 | |
| Harisu | 6 | |
| Lee Ki-woo | Himself | 5 |
| Kang Jung-hwa | Herself | 5 |
| Han Hyo-joo | Herself | 4 |
| Jung Ryeo-won | Herself | 4 |
| Lee Beom-soo | Himself | 4 |
| Psy | Himself | 3 |
| Jung Woong-in | Himself | 2 |
| Chae Min-seo | Herself | 2 |
| Park Hyo-joon | Himself | 2 |
| Kim Ok-bin | Herself | 2 |
| Jung Jun-ho | Himself | 2 |
| Yoon Jong-shin | Himself | 2 |
| Kim Sung-su | Himself | 2 |
| Cha Hyun-jung | Herself | 2 |
| Lee Chun-hee | Himself | 2 |
| Park Si-yeon | Herself | 2 |
| Yang Dong-geun | Himself | 1 |
| An So-hee | Herself | 1 |
| C. Kim Miles | 1 |