Based on the available information, no character named "Gamegamedada" appears in the anime "Kero Kero Keroppi: Hasunoue Town Kikiippatsu!" or any other official Keroppi media. Comprehensive sources detailing Keroppi's background, family, friends, media history, and video game adaptations contain no mention of this specific character. Similarly, international dubs and adaptations of the series lack any reference to "Gamegamedada".