This is episode 0, the prequel to the main Keroro Gunsou anime series. KeroZero was shown in theaters with Keroro Gunsou Movie 4.

Cast:Kumiko Watanabe, Etsuko Kozakura, Jouji Nakata, Takehito Koyasu, Takeshi Kusao,

Genre:Animation,

country:Japan,

Production:none