Top Cast
Takumi Saitoh
Jun
Asumi Nakada
Mayumi
Masaki Tachi
Dr. Garigolin
Yusuke Numata
Jun / Wonder Seven (voice)
Tomoko Kawakami
Mayumi (voice)
Shigeru Chiba
Dr. Garigolin / Narrator (voice)
Wasabi Mizuta
Kechompa (voice)
Ryuuzaburou Ootomo
Kirugoa (voice)
Seizo Kato
Wonder Stick (voice)
Tomohiro Nishimura
Wonder Blaster (voice)