Seel was introduced in the first generation of Pokemon games, Pokemon Red and Green in Japan in 1996, as a Water type that evolves into Dewgong. Like other early Pokemon, its cry was created with the limited sound hardware of the Game Boy, giving it a short electronic squeal instead of a realistic sea lion call. That distinctive game cry has been carried through later titles, the anime and fan remixes, and clips of it are now shared on soundboards for nostalgic and comic use.