Toshio Furukawa as Ataru Moroboshi (voice)

Fumi Hirano as Lum (voice)

Akira Kamiya as Mendou

Kazuko Sugiyama as Ten

Saeko Shimazu as Shinobu

Akira Murayama as Perm

Shinji Nomura as Kakugari

Issei Futamata as Chibi

Kenichi Ogata as Ataru's Father

Natsumi Sakuma as Ataru's Mother

Michihiro Ikemizu as Onsen-Mark

Masahiro Anzai as Ryuunosuke's Father

Takuya Fujioka as Mujaki

Tessyo Genda as

Ichiro Nagai as Sakuranbô (Cherry)

Yoku Shioya as

Hideyuki Tanaka as

TARAKO as

Machiko Washio as Sakura

Mayumi Tanaka as Ryuunosuke

Tomomichi Nishimura as Principal

Shigeru Chiba as Megane

Rumiko Ukai as