Yoshiko Matsuo
Keroppi (voice)
Kazue Ikura
Den Den (voice)
Sanae Miyuki
Teru Teru (voice)
Atsuko Mine
Pika (voice)
Hiroko Nishi
Pikki (voice)
Hiroshi Ôtake
Piero (voice)
Kazuyo Aoki
Don (voice)
Kenichi Ogata
Keroppa (voice)
Kosei Tomita
Max (voice)
Kyôko Yamada
Kyorosuke (voice)
Mahito Tsujimura
Meries (voice)
Masaki Maeda
Koroppi (voice)
Masako Miura
Keroleen (voice)
Masashi Hirose
Hagetarō (voice)
Michiyo Yanagisawa
Noberun (voice)
Rin Mizuhara
Goro (voice)
Seiko Tomoe
Keroma (voice)
Tomiko Suzuki
Junk (voice)
Toru Furuya
Athos (voice)
Chafurin
Additional Voices (voice)
Ginzo Matsuo
Additional Voices (voice)