| Seiyuu | Role |
| Ikue Ohtani | Gash Bell |
| Takahiro Sakurai | Kiyomaru Takamine |
| Wakana Yamazaki | Hana Takamine (Kiyomaru's Mother) |
| Shihomi Mizowaki | Naomi |
| Satomi Koorogi | Umagon (Schneider) |
| Masami Kikuchi | Kyanchome |
| Hiroki Takahashi | Parco Folgore |
| Rie Kugimiya | Tio |
| Ai Maeda | Megumi |
| Tomoko Akiya | Suzume Mizuno |
| Kousuke Toriumi | Ururu (Episode 52, 53, 55) |
| Yasuhiro Takato | Bjonco (Episode 53 - 57, 59, 61, 66) |
| Shizuka Itou | Elizabeth (Episode 64 & 65) |
| Naoko Matsui | Patti (Episode 52 - 57) |
| Rumi Shishido | Layla (Episode 61, 63 - 66) |
| Hisao Egawa | Darmos (Episode 64 & 65) |
| Kishou Taniyama | Albert (Episode 64, 77 - 84, 86) |
| Rokuro Naya | Doctor Nazonazo |
| Masami Kikuchi | Fake Kiyomaru (Episode 11) |
| Haruhi Terada | Gem (Episode 22 & 23) |
| Unsho Ishizuka | Gustaf (Episode 44 - 46) |
| Ryoutarou Okiayu | Barry (Episode 44 - 46) |
| Takashi Matsuyama | Cook |
| Tessho Genda | Dartagnan |
| Machiko Toyoshima | Shion Hibiki (Episode 31 - 35) |
| Kenta Miyake | Galza (Episode 39 & 54) |
| Akemi Okamura | Kid |
| Norio Wakamoto | Victreem (Episode 61 - 64) |
| Kumiko Watanabe | Arm (Episode 59 - 62) |
| Akemi Okamura | Mamiko Takahashi (Episode 61) |
| Akiko Yajima | Kotoha (Movie) |
| Tomo Saeki | Akatsuki (Movie) |
| Tomohiro Nishimura | Fukurou (Movie) |
| Kouichi Tohchika | Sakurada (Movie) |
| Kotono Mitsuishi | Kotoha's Mother (Movie) |
| Minami Takayama | Gash's Mother (Movie) |
| Tokuyoshi Kawashima | Galionto (Episode 37 & 38) |
| Yuuichi Nakamura | Zaoron (Episode 70 & 71) |
| Toshiyuki Morikawa | Wiseman (Movie) |
| Nanaho Katsuragi | Zabas (Episode 37 & 38) |
| Kenji Nomura | Faust (Episode 57) |
| Tomoyuki Shimura | Zwei (Episode 57) |
| Mayumi Yamaguchi | Baum (Episode 60) |
| Masaaki Tsukada | Karaom (Episode 28) |
| Hozumi Gouda | Sunbeam (Episode 65 - 67) |
| Iemasa Kayumi | Goldo (Episode 27) |
| Yukiji | Nyalrato (Episode 31 - 35) |
| Toshiko Fujita | Zophis / Load |
| Masayuki Katou | Gerhard |
| Toru Ohkawa | Circus Director (Episode 40 & 41) |
| Yuu Asakawa | Tsukushi Kinoyama |
| Shoutarou Morikubo | Haruhiko (Episode 7) |
| Norio Wakamoto | Feyn (Episode 9) |
| Shinji Kawada | Seibee (Episode 9) |
| Yuki Kaida | Eshuros (Episode 10) |
| Chinami Nishimura | Koko |
| Junko Takeuchi | Mars (Episode 14 & 15) |
| Konami Yoshida | Robnos (Episode 16, 17, 21) |
| Satsuki Yukino | Yuuta (Episode 6) |
| Yuka Imai | Shiori |
| Wataru Takagi | Kaneyama |
| Ryoutarou Okiayu | Seitarou Takamine (Kiyomaru's Father) |
| Kazunari Kojima | Brago |
| Hiroshi Kamiya | Eita |
| Megumi Urawa | Haido |
| Motoko Kumai | Reikomu (Episode 2 & 3) |
| Ken Yamaguchi | Hosokawa (Episode 2 & 3) |
| Houko Kuwashima | Colulu |
| Tetsuo Kaneo | Ryukku (Episode 16) |
| Kiyoyuki Yanada | Baltro (Episode 19 & 20) |
| Akira Ishida | Wonray (Episode 37, 38, 66, 67) |
| Haruna Ikezawa | Rien (Episode 37, 38, 66, 67) |
| Ken Yamaguchi | Hidetoshi Nakata |
| Kazunari Tanaka | Yamanaka |
| Hikaru Midorikawa | Dufaux |
| Urara Takano | Zeon |
| Haruhi Terada | Wife |
| Taeko Kawata | Lucica (Episode 40 & 41) |
| Yuriko Yamaguchi | Balansha (Episode 39 & 54) |
| Junichi Suwabe | Fleet (Episode 40 & 41) |
| Kazuki Yao | Steng (Episode 19 & 20) |
| Mika Kanai | Lops (Episode 24, 25, 42) |
| Toshihiko Seki | Apollo (Episode 24, 25, 42, 66) |
| Megumi Toyoguchi | Maril (Episode 28) |
| Kappei Yamaguchi | Danny (Episode 27) |
| Kouji Ishii | Hige (Episode 29 & 30) |
| Nobuo Tobita | Shinichi (Episode 10) |
| Daisuke Ono | Goffley (Episode 4 & 5) |
| Fumiko Orikasa | Sherie |