Dogoo is a recurring creature in the Choujigen Game Neptune series, known for its simplistic and blob-like appearance. It is a common enemy that players encounter throughout the game, often serving as an introductory opponent for new players. Despite its unassuming look, Dogoo has become an iconic mascot for the series with its distinctive design and playful demeanor. Its role in the series is primarily that of a minor antagonist, providing players with both a challenge and a source of humor as they progress through the game's various levels and storylines.