Skarmory

Skarmory is a dual Flying/Steel type Pokemon introduced in Generation II. It has an immunity to the move Earthquake and Nidoran's final forms; Nidoking and Nidoqueen, in which both of them are Poison/Ground types.

It is unknown Skarmory would evolve into another Pokemon.

Trivia

 * Due to it's Flying typing, Ground type moves never affect Skarmory. In the Champion Steven's battle in Pokemon Omega Ruby and Alpha Sapphire, the bar will say "I used Earthquake! It doesn't affect Skarmory....".
 * Skarmory has two immunities, Ground and Poison.
 * Skarmory only has two weaknesses, Electric and Fire, due to it's Steel typing.