Fumi Hirano as Lum (voice)

Toshio Furukawa as Ataru (voice)

Akira Kamiya as Mendou (voice)

Kazuko Sugiyama as Ten (voice)

Saeko Shimazu as Shinobu (voice)

Shigeru Chiba as Megane (voice)

Akira Murayama as Perm (voice)

Issei Futamata as Chibi (voice)

Mayumi Tanaka as Ryuunosuke (voice)

Masahiro Anzai as Ryuunosuke's Father (voice)

Kazue Komiya as Ran (voice)

Machiko Washio as Sakura (voice)

Michihiro Ikemizu as Onsen-Mark (voice)

Kenichi Ogata as Ataru's Father (voice)

Natsumi Sakuma as Ataru's Mother (voice)

Sumi Shimamoto as Asuka (voice)

Masako Katsuki as Ten's Mother (voice)

Ichiro Nagai as Cherry (voice)