Haruka Tomatsu as Keita Amano (voice)

Tomokazu Seki as Whisper / Buchinyan (voice)

Etsuko Kozakura as Jibanyan / Buchinyan / Shogunyan (voice)

Romi Park as Keizo Amano (voice)

Yuki Kaji as Darknyan / Hovernyan / Meganyan (voice)

Ainosuke Kataoka as Tokio Ubaune (voice)

Vanilla Yamazaki as Kin (voice)

Mika Kanai as Gin (voice)

Hisako Kyoda as Yukiko Amano (voice)

Haruka Shimazaki as Young Yukiko Amano (voice)

Naoki Bando as Bronzlow / Manjimutt / Robonyan / Roughraff (voice)

Aya Endo as Komasan / Fumiko Kodama (voice)

Masahito Yabe as Dandoodle / Happiere / Walkappa (voice)

Ryoko Nagata as Kyubi / Mrs. Amano (voice)

Ken Shimura as Master Nyada (voice)