Hyperspace Boy Wonder Seven

Takumi Saitoh

as

Jun

Asumi Nakada

as

Mayumi

Masaki Tachi

as

Dr. Garigolin

Yusuke Numata

as

Jun / Wonder S...

Tomoko Kawakami

as

Mayumi (voice)

Shigeru Chiba

as

Dr. Garigolin ...

Wasabi Mizuta

as

Kechompa (voic...

Ryuuzaburou Oo...

as

Kirugoa (voice)

Seizô Katô

as

Wonder Stick (...

Tomohiro Nishi...

as

Wonder Blaster...