Kumiko Watanabe

as Sergeant Keroro (voice)

Etsuko Kozakura

as Private Second Class Tamama (voice)

Jouji Nakata

as Corporal Giroro (voice)

Takehito Koyasu

as Sergeant Major Kururu (voice)

Takeshi Kusao

as Lance Corporal Dororo (voice)

Houko Kuwashima

as Fuyuki Hinata (voice)

Chiwa Saito

as Natsumi Hinata (voice)