Sharer Tweet Turn off light Server 1 Server 2 Server 3 Sergeant Keroro: Kero 0 0 votes, average 0 out of 10 - 15 minutes This is episode 0, the prequel to the main Keroro Gunsou anime series. KeroZero was shown in theaters with Keroro Gunsou Movie 4. Genre: Animation Year: 2009 Country: Japan Release:30 Apr 2009 Language:日本語 Director: Cast: Kumiko Watanabe, Etsuko Kozakura, Jouji Nakata, Takehito Koyasu, Takeshi Kusao prequelshort film Similar 5.80 Printed Rainbow 6.70 The Prince and the Pauper 2.00 Cenicienta Swing 5.60 Hedgehog's Home 6.00 La pomme ou L'histoire d'une histoire