Munchlax has a teal-colored body with a cream-colored spot on its chest. Its round head is teal in the top half and cream on the bottom half. It has big, round eyes and large pointy ears. It has five-fingered hands and cream-colored feet with three clawed toes.
In the anime, Munchlax first appeared in Destiny Deoxys, where it evolved into a Snorlax to stay afloat in the Block Bot flood, making it the first Generation IV Pokémon to appear in the anime. May currently owns a Munchlax, which she captured in Berry, Berry Interesting. A trainer named Kylie owns a Munchlax, which was seen in A Full Course Tag Battle!.
In the Pokémon Adventures manga, Diamond owns a Munchlax, which was his first Pokémon and is often seen eating with him. In Pokémon Diamond and Pearl Adventure!, a Collector, Ruin Maniac, Psychic and Galactic Grunt are all searching for a Munchlax, which is said to be very rare. Its Pickup ability takes Hareta's Pokédex but Munchlax returns it later.