Kumiko Watanabe

Sergeant Keroro (voice)

Etsuko Kozakura

Private Second Class Tamama (voice)

Jouji Nakata

Corporal Giroro (voice)

Takehito Koyasu

Sergeant Major Kururu (voice)

Takeshi Kusao

Lance Corporal Dororo (voice)

Houko Kuwashima

Fuyuki Hinata (voice)

Chiwa Saito

Natsumi Hinata (voice)

Akiko Hiramatsu

Aki Hinata (voice)

Jesse

Aruru / Deruru (voice)