- Kunihiko Ôshiba
- Kenta Date / Mega Red
- Atsushi Ebara
- Kôichirô Endô / Mega Black
- Masaya Matsukaze
- Shun Namiki / Mega Blue (as Massaya Matsuzake Ono)
- Eri Tanaka
- Chisato Jôgasaki / Mega Yellow
- Mami Higashiyama
- Miku Imamura / Mega Pink
- Yûji Kishi
- Kyôsuke Jinnai / Red Racer
- Yoshihiro Masujima
- Naoki Domon / Blue Racer
- Yoshihiro Fukuda
- Minoru Kamisugi / Green Racer
- Yuka Motohashi
- Natsumi Shinohara / Yellow Racer
- Atsuko Kurusu
- Yôko Yagami / Pink Racer
- Shigeru Kanai
- Yûsaku Hayakawa / Mega Silver
- Satoru Saitô
- Dr. Eikichi Kubota
- Yoshihiro Nozoe
- Ken Ooiwa
- Tadashi Takatsuki
- Kenta's Father
- Komachi Oi
- Kenta's Mother
- Tetsuo Morishita
- Dr. Hinelar
- Asami Jô
- Shibolena
- Hirotaka Suzuoki
- Yugande
- Tomokazu Seki
- Bibidebi
- Mari Maruta
- Dappu
- Seizô Katô
- Helmedor
- Takeshi Kuwabara
- Crab Nezilar
- Kyôko Yamada
- Picoto
- Yôsuke Akimoto
- Lizard Nezilar
- Yutaka Aoyama
- Condor Nezilar
- Kazuhiko Kishino
- Mantis Nezilar
- Koji Koike
- Lion Nezilar
- Eizô Tsuda
- Porcupine Nezilar
