I think that mawile is my favourite Hoenn Pokemon and i LOVE his/her mega form, definitely one of the most original designs in the poke-world.
Based on this:
https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcS0DbuZrK5xIEwJC9Zc4KUmipvBXUB0Q0y_pQpSiCa51rw4F6IA