| Idol specialized MC Jung Hyung Don and MC Jang Sung Kyu attach everything in the world with K-POP idol stars! Multinational K-Pop idol stars compete in an ingenious quiz competition, to show their talent as the quiz genius beyond themselves as the idol genius. The quiz show that crosses a border of Idol Star, Idol on the Quiz! |
| Name | Character | Episodes |
|---|---|---|
| Jang Sung-kyu | Self | 20 |
| Nichkhun Horvejkul | Self | 2 |
| The8 | Self | 1 |
| Seungkwan | Self | 1 |
| DK | Self | 1 |
| Kim Da-hyun | Self | 1 |
| Hoshi | Self | 1 |
| Joshua | Self | 1 |
| Dino | Self | 1 |
| Vernon | Self | 1 |