Houndoom

Houndoom is a Dark, Fire-type Pokémon from the Johto region. It evolves from Houndour after being fed 50 candies. It can Mega Evolve into Mega Houndoom initially after being given 200 Mega Energy, and 40 afterwards.

Trivia

 * Normally, evolved stages of Pokémon cannot be shiny in encounter screen, but after its Mega Evolution release, could.