'Mawild' is most likely the Pokemon Mawile (sometimes mispelt as 'Mawhile'). Mawile is a Pokemon available firstly in Ruby but can be obtained through slightly normal gameplay in Pokemon Diamond and Pearl. It is a Third Generation Pokemon who is of the Steel type. Mawile can be recognised by it strange horns protruding from its head, which take the shape of something resembling a gaping mouth.
Mawile currently has no evolutions or pre-evolutions and is generally an average Pokemon stat-wise.