Takashi Matsuyama

Mid-ranked Youkai (voice) / Youkai (voice) / Hitotsume no Chuukyuu Youkai (voice) / Shinpan (voice)

Morimichi Sugita

Keisuke Nashimoto (voice)

Gangr (voice)

Fire-Breathing Bug (voice)

Old Man B (voice)

Badakin (voice)

Stuart (voice)

Takao Yatsuka

Asset (voice)

(voice)

Count Heinrich von Kinkell

Police chief (voice)

Section Chief Buddha (voice)

Ishikawa (voice)

Deka Pierrot (voice)

Giant Squid (voice)

Byro (voice)

Kazuo Murakami (voice)

Hitotsume no Chuukyuu Youkai (voice)

ACE (voice)

Tet VII (voice)

Rurio (voice)

Teacher (voice) / Homeroom Teacher (voice)

Manager Shirazawa (voice)

Matthias Luna Tearmoon (voice)

Hayashi

UNTI Employee Gorilla (voice)

Kenroku Iwatora (voice)

Mobead (voice)

Bo Yamato (voice)

(voice)

Natsuki-sensei (voice)

Morimichi Sugita

Tahara

Hōkei Kin (voice)

Werewolf

God Magnus (voice)

Janake Saucer (voice)

One (voice)

Akira's father (voice)

Nanjiro Echizen (voice)

Beast King Guitar (voice)

Genjou (voice)

Don Chichi / Jadakins (voice)

Osamu (voice)

Megastorm / Gigastorm / Powerhug (voice)

Manta (voice)

Jeeves Wodehouse (voice)

Tōkichi (voice)

Genma Otagaki / Rokkan (voice)

Shousei (voice)

Hajime Saitou (voice)

Papa C

Akame (voice)

Daibon

Korokken

(voice)

Haruto Nanjou (voice)

Hardgear

Taizou Kirisato

Tōdo / Kātisu / Sandea

Gomimaru

Ra-Kan

Hans von Rubelt (voice)

Gigastorm (voice)

Baku

Tommy (voice)

Igaya

Aoyagi Shinzaburo

Runber Jack

Shūji Katō (voice)

Gorō Mizokuro

(voice)

Kurata (voice)

ボルシチ

Bud

Doctor

Severin

Hardgear

Narrator