| Seiyuu | Role |
| Kenichi Suzumura | Hajiki Sanada |
| Junichi Suwabe | Katana |
| Kikuko Inoue | Cathrine |
| Fumiko Orikasa | Arashi Shinozuka |
| Unsho Ishizuka | Kogorou Hachisuka |
| Masashi Ebara | Jack Bruno |
| Yuko Satou | Takumi Kisaragi |
| Masayo Kurata | Aiko Marie Harmony |
| Shouko Tsuda | Kyouko Sanada (Hajiki's Mother) |
| Tamaki Nakanishi | Satsuki Sanada (Hajiki's Sister) |
| Yuriko Yamaguchi | Wanda (Episode 1 - 4) |
| Shintarou Oohata | Black |
| Isshin Chiba | Richie |
| Mayumi Yamaguchi | Linda-sensei (Episode 1 & 3) |
| Kenji Nomura | Rally J Harmony |
| Keiichi Sonobe | Renji (Episode 4) |
| Tomomichi Nishimura | Mauro (Episode 6 & 10) |
| Yuko Satou | Chris (Episode 6) |
| Tomoe Hanba | Isa (Episode 7) |
| Kenji Utsumi | Radiguet (Episode 8) |
| Takayuki Sugou | Dorgel (Episode 8) |
| Chiemi Chiba | Melissa (Episode 9) |
| Yumiko Kobayashi | Hajiki (as a child Episode 9) |
| Motomu Kiyokawa | Miguel (Episode 10) |
| Masashi Hirose | Binosh (Episode 11) |
| Takehito Koyasu | Takenaka (Episode 12) |
| Takaya Hashi | Dab (Episode 13) |
| Isshin Chiba | Sharks (Episode 3, 5, 14) |
| Jouji Nakata | Bart (Episode 15 & 16) |
| Daisuke Sakaguchi | Arashi's Brother (Episode 18) |
| Mitsuru Ogata | Don Pilro (Episode 10) |
| Kotomi Yamakawa | Mary |
| Naomi Wakabayashi | Mimi (Episode 11) |