From Bulbapedia:

"Mawile (Japanese: クチート Kucheat) is a dual-type Steel/Fairy Pokémon introduced in Generation III. Prior to Generation VI, it was a pure Steel-type Pokémon.

While it is not known to evolve into or from any other Pokémon, Mawile can Mega Evolve into Mega Mawile using the Mawilite.

Mawile is a short, bipedal Pokémon with a pale yellow body and black arms and feet. Its legs have a thick, fur-like covering resembling hakama or a skirt. Its most notable feature is a pair of large black jaws emerging from the back of its head. These jaws have an oval yellow spot on their top surface and contain ten pointed teeth - six on the top row and four on the bottom. While the jaws are said to actually be transformed steel horns, Mawile can articulate them at will, using them to bite enemies and chew through iron beams. These jaws are also incapable of tasting and can be used by Mawile to eat food it does not like. It has red eyes and two black ear-like extensions on either side of its head.

Mawile is typically found in caves. It uses its non-threatening appearance to make foes underestimate it, then attacks with its giant jaws or swallows prey whole; when engaged in battle, Mawile usually has its back turned on the enemy to better use its jaws. Mega Mawile can use both its jaws to grip on prey and tear them apart. These jaws thrash around violently.

Mawile may have been based on the Japanese legend of the futakuchi-onna, a woman with a mouth in the back of her head. Its mouth resembles a bear-trap, which could have been the origin for its Steel type."

See Also:

• pokémon_(species)
• mawile
• mega_mawile