On screen
Cast
13 credited performers
Showtaro Morikubo
Young Mewtwo (voice)
Kyoko Hikami
Ai (voice)
Yosuke Akimoto
Dr. Fuji (voice) (uncredited)
Satomi Korogi
Zenigametwo (voice)
Etsuko Kozakura
Fushigidanetwo (voice)
Yuji Ueda
Hitokagetwo (voice)
Shinobu Adachi
Wife (voice)
Shinpachi Tsuji
Researcher (voice)
Tomohisa Aso
Researcher (voice)
Hidenari Ugaki
Research Scientist (voice)
Takuma Suzuki
Research Scientist (voice)
Akio Suyama
Research Scientist (voice)
Masachika Ichimura
Adult Mewtwo (voice) (uncredited)