| Name | Character | Episodes |
|---|---|---|
| Takahiro Sakurai | Spencer (voice) | 24 |
| Akio Otsuka | Gus (voice) | 24 |
| Megumi Hayashibara | Flora (voice) | 24 |
| Hiroshi Kamiya | Tao (voice) | 24 |
| Miyu Irino | Roddy (voice) | 24 |
| Mamoru Miyano | Ertegun (voice) | 24 |
| Maaya Sakamoto | Crystal (voice) | 24 |
| Kana Ichinose | Tuesday (voice) | 24 |