Sergeant Keroro: Kero 0 (2009) is a Animation film that follows this is episode 0, the prequel to the main Keroro Gunsou anime series. KeroZero was shown in theaters with Keroro Gunsou Movie 4. Sergeant Keroro: Kero 0 is not currently listed with streaming providers in your selected region, but availability can change over time. Fans of animation movies may also want to explore similar titles below.