| Name | Character | Episodes |
|---|---|---|
| Kian84 | 588 | |
| Lee Ju-seung | 583 | |
| Kian84 | Self | 175 |
| Henry Lau | Self | 82 |
| Seo In-guk | Self | 14 |
| Kim Min-jun | Self | 7 |
| Daniel Henney | Self | 5 |
| Ahn Bo-hyun | Self | 4 |
| Jung Ryeo-won | Self | 4 |
| Joon Park | Self | 3 |
| Song Seung-heon | Self | 3 |
| Kim Dong-hyun | Self | 3 |
| Park Seo-jun | Self | 2 |
| Ha Jung-woo | Self | 2 |
| Choi Deok-moon | Self | 2 |
| Rain | Self | 2 |
| Kathryn Prescott | Self | 2 |
| Kim Je-dong | Self | 2 |
| Lee Hye-ri | Self | 2 |
| Don Lee | Self | 1 |
| Kim Hye-soo | Self | 1 |
| Yoona | Self | 1 |
| Lee Jung-eun | Self | 1 |
| Kim Se-jeong | Self | 1 |
| Lee Soon-jae | Self | 1 |
| Ok Taec-yeon | Self | 1 |
| Yoo Jae-suk | Self | 1 |
| Kai | Self | 1 |
| Lee Kyoo-hyung | Self | 1 |
| Lee Sung-min | Self | 1 |
| Lee Jong-won | Self | 1 |
| Lee Kyung-kyu | Himself | 1 |
| Sumi Jo | Self | 1 |
| Park Jeong-min | Self | 1 |
| Kwon BoA | Self | 1 |
| Amber Liu | Self | 1 |
| Lee Si-young | Self | 1 |
| Zico | Self | 1 |
| Kwak Kyung-taek | Self | 1 |
| Eric Nam | Self | 1 |
| Ryu Dam | Self | 1 |
| Sandara Park | Self | 1 |
| Kim Hye-ja | Self | 1 |