| Seiyuu | Role |
| Tomokazu Seki | Sousuke Sagara |
| Satsuki Yukino | Kaname Chidori |
| Miyuki Sawashiro | Xia Yuiran |
| Emi Shinohara | Xia Yuifang |
| Houchu Ohtsuka | Gates |
| Daisuke Namikawa | Leonardo Testarossa |
| Masahiko Tanaka | Gauron |
| Tomomichi Nishimura | Richard Mardukas |
| Akio Ohtsuka | Andrey Kalinin |
| Rikiya Koyama | Bellfangan Clouzot |
| Michiko Neya | Melissa Mao |
| Shinichirou Miki | Kurz Weber |
| Yukana Nogami | Teresa Testarossa |
| Maya Okamoto | Jacqueline Vilan |
| Rio Natsuki | Eri Kagurazaka |
| Kouji Yusa | Tony |
| Hozumi Gouda | Vincent Bruno |
| Nozomu Sasaki | Jan Jungyu |
| Ikue Kimura | Kyouko Tokiwa |
| Mamiko Noto | Shinji Kazama |
| Takehiro Murozono | Voice of Sousuke's Mech |
| Jun Fukuyama | Voice of Mao's Mech |
| Yukari Tamura | Voice of Kurz' Mech |
| Chikao Ohtsuka | Malory |
| Takayuki Sugou | Amitt |
| Daisuke Ono | Shouta Sakamoto |
| Hajime Iijima | Speck |
| Hiromi Konno | Shiori Kudou (Episode 7 & 13) |