| Name | Character | Episodes |
|---|---|---|
| Natsuki Hanae | Ken 'Okarun' Takakura (voice) | 13 |
| Mayumi Tanaka | Turbo Granny (voice) | 12 |
| Miyu Tomita | Muko (voice) | 5 |
| Kaito Ishikawa | Jin 'Jiji' Enjouji (voice) | 3 |
| Tomokazu Seki | Dover Demon (voice) | 3 |
| Tomokazu Sugita | Taro (voice) | 2 |
| Kikuko Inoue | Acrobatic Silky (voice) | 2 |
| Kazuya Nakai | Serpoians (voice) | 2 |
| Kazuya Nakai | Serpoian A / Serpoian B / Serpoian C (voice) | 1 |
| Tasuku Kaito | Male Student C (voice) | 1 |