Mawile are small Pokémon with a yellow and black color combination. It has a round, cute face and small red eyes. Its legs are covered by yellow flaps, with its black feet visible. Its most noticeable feature though, is its giant jaws on the back of its head. These jaws are actually a pair of horns, able to "bite" down on prey or enemies.
Its Mega-Evolution carries two massive mouths on its head. It is larger than its regular self, but more powerful.
Mawile's first, and only main appearance was in the Advanced Generation episode Once in a Mawile. In the episode a Mawile fell in love with Brock's Lombre, however his Lombre did not feel the same way. By the end of the episode, Lombre evolved into Ludicolo and then shared the same feelings toward the Mawile, but Mawile, not liking Lombre's new form, rejected it. Ludicolo later figured out that it has happened before and Mawile is always falling in and out of love.
The introduction of Klink and its evolutions make Mawile the only non-legendary pure Steel-type Pokémon before Generation V.
However Mawile is still the only pure Steel-type Pokémon that has genders.
Mawile is based on the Japanese legend of the futakuchi-onna. This legend tells of a woman that had a mouth on the back of her head.
Mawile's name comes from combining the word maw, meaning an animal's mouth, and wile, meaning to lure or entice. The Japanese name Kucheat combines the words kuchi, also meaning mouth, and the word eat.