Gligar

Gligar is a Ground/Flying-type Pokémon introduced in Generation II of the Pokémon franchise. It evolves into Gliscor when holding a Razor Fang at night.

In the anime, Ash's rival, Morrison owns a Gligar and used it to battle in the Hoenn League.

Ash Ketchum caught a Gligar while traveling in the Sinnoh region with Brock and Dawn. However, it had trouble keeping up with its battling skills and had problems flying. With Gary Oak's help, Ash was able to give Gligar confidence and used the Razor Fang to evolve into Gliscor in order to save its trainer from falling.