Entei

Entei is a legendary Fire type Pokémon, one of the Legendary Beast trio.

Locations
Pokémon Gold/Silver: It is roaming Johto.

Pokémon FireRed/LeafGreen: It is roaming Kanto.

Pokémon Colosseum: You snag him from Dakim at Mt. Battle.

In Super Smash Bros.
Entei appears in SSBM and SSBB. It shoots a pillar of fire upwards.