Momotaros is a key character in the tokusatsu series Kamen Rider Den-O. He is one of the Imagin, a race of time-traveling creatures, and serves as the first Imagin partner of the protagonist, Ryotaro Nogami. Known for his fiery temper and love of fighting, Momotaros possesses Ryotaro to transform him into Kamen Rider Den-O Sword Form. His comedic personality and catchphrases make him a fan favorite, and he plays a crucial role in both battles and the series' lighter moments.