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)