| Seiyuu | Role |
| Tomokazu Seki | Joe |
| Natsuko Kuwatani | Sylvia |
| Makoto Tsumura | Captain Blue Junior |
| Mayumi Asano | Sprocket |
| Shinichirou Miki | Alastor |
| Youji Ueda | Fire Leo |
| Banjou Ginga | Captain Blue |
| Shouto Kashii | Gran Bruce |
| Akimitsu Takase | Hulk Davidson |
| Mitsuru Ogata | King Charles the 3rd |
| Mitsuki Saiga | Jim (Episode 19) |
| Miyuki Sawashiro | Amy (Episode 19) |
| Tomoe Sakuragawa | Honey (Episode 17) |
| Akiko Kimura | Thomas (Episode 17) |
| Yuki Matsuoka | Alisa (Episode 16) |
| Satomi Arai | Mary (Episode 15) |
| Noriko Rikimaru | Holy (Episode 9) |
| Tsubasa Otomiya | Koko (Episode 11) |
| Miyako Itou | Mick (Episode 19, 24, 25) |