| Seiyuu | Role |
| Chiwa Saitou | Lavi Hed |
| Mayumi Asano | Claus Valca |
| Eri Kitamura | Tatiana Wisla |
| Michiko Neya | Delphine Eraclea |
| Shinichirou Miki | Moran Shetland |
| Wakana Yamazaki | Sophia Forrester |
| Natsuko Kuwatani | Aristia Agrew |
| Tomoe Hanba | Lucciola |
| Junko Noda | Dio Eraclea |
| Toshiyuki Morikawa | Alex Low |
| Kouji Tsujitani | Geese |
| Ryoko Nagata | Vina |
| Kenta Miyake | Jim |
| Hozumi Gouda | Vincent Altzai |
| Shigenori Souya | Campbell |
| Kinryu Arimoto | Nestel (Episode 16 - 18, 20, 24) |
| Yousuke Akimoto | David Madosein (Episode 1, 2, 17 - 20, 23 - 25) |
| Tomokazu Seki | Ethan |
| Kana Hanazawa | Holy Madosein (Episode 1, 2, 19, 24) |
| Yukana Nogami | Subtitle Narration |
| Kiyoyuki Yanada | Gale |
| Unsho Ishizuka | Godwyn |
| Masaki Aizawa | Ben |
| Hiroshi Naka | Marc (Episode 8) |
| Keiko Aizawa | Justina Valca (Episode 14) |
| Rei Igarashi | Tatiana's Mother (Episode 13) |
| Ken Yamaguchi | Greyhound (Episode 1, 7, 12, 15, 20) |
| Mitsuo Iwata | Knox (Episode 16) |
| Tetsuo Kaneo | Hamilkar Valca (Episode 14) |
| Satsuki Yukino | Madame Madosein (Episode 1, 2, 19, 24) |
| Hiroshi Naka | Brian (Episode 7, 11, 19, 20) |
| Mitsuo Iwata | Sam (Episode 7, 19, 20) |
| Hiroshi Naka | Worthly (Episode 1) |
| Kouji Ishii | Hurricane Hawk (Episode 3, 17, 19) |
| Masaki Aizawa | Sonny Boy (Episode 3, 17, 19, 20) |
| Shigeru Shibuya | Sky Magician (Episode 3) |