Şovtaro Morikubo

Young Mewtwo (voice)

氷上恭子

Ai (voice)

秋元羊介

Dr. Fuji (voice) (uncredited)

こおろぎさとみ

Zenigametwo (voice)

小桜エツコ

Fushigidanetwo (voice)

Yuji Ueda

Hitokagetwo (voice)

安達忍

Wife (voice)

辻親八

Researcher (voice)