- Johnny Yong Bosch
- Ken Washio / Gatchaman G-01 (voice)
- Aya Endô
- Sasaoka
- Naoyuki Fernandez
- Takeshi Yoroi / Hariken Polymer
- Eiichirô Funakoshi
- Dr. Kozaburo Nambu
- Ai Kayano
- Emi Kaido
- Kyle McCarley
- Joji Minami / Tekkaman (voice)
- Landon McDonald
- Casshan
- Cassandra Lee Morris
- Emi Kaido
- Atsushi Ono
- Kazumichi Kaido
- Rachel Robinson
- Sasaoka
- Nicolas Roye
- Takeshi Yoroi / Hurricane Polymar (voice)
- Sôma Saitô
- Tetsuya Azuma / Casshan (voice)
- Takahiro Sakurai
- Joji Minami / Tekkaman (voice)
- Tomokazu Seki
- Ken Washio / Gatchaman G-01 (voice)
- Keith Silverstein
- Kazumichi Kaido
- Kazuma Suzuki
- Joe
- Ken'ichi Suzumura
- Takeshi Yoroi / Hurricane Polymer (voice) (as Kenichi Suzumura)
- Wally Wingert
- Dr. Kozaburo Nambu
