Tornadus

Tornadus is a Flying-type Legendary Pokémon from the Unova region. It does not evolve into or from any other Pokémon. Along with Thundurus and Landorus, it is a member of the Forces of Nature.

Trivia

 * It is the only Pokémon in game data to be pure Flying-type.
 * Also, it is the first one to have Flying-type as its primary one. Thus making the Flying-type background visible.