Kero 0: Shuppatsu da yo! Zenin Shuugou!

Set against the backdrop of intergalactic adventure, "Kero 0: Shuppatsu da yo! Zenin Shuugou!" serves as a captivating prelude to the beloved Keroro Gunsou series. The story unfolds on the day the Keroro battalion is set to embark on their mission to Planet Earth. As excitement builds for their departure, an unexpected threat emerges when a rival alien force launches an assault on the Keron space station.

While the battalion prepares for their journey, Giroro and Zeroro—who would later be known as Dororo—find themselves in a precarious situation. Together, they must navigate the chaos and defend their station, highlighting the camaraderie and resilience that will define their adventures on Earth. This episode offers a glimpse into the origins of the characters and sets the stage for the whimsical escapades that lie ahead.