Roger's Mightyena

Roger's Mightyena (ロジャーのグラエナ, Roger no Guraena) is Roger's first and main Pokémon.

Light & Dark
Mightyena, as a Poochyena, was Roger's very first Pokémon when he started his journey at a young age. It was part of a Mightyena cackle owned by Roger's grandfather in Freesia Town. It evolved into Mightyena shortly after he won his second Gym badge and has remained his partner into his adult life.

It appears in Parents in Monkshood!, where it easily defeats Silus's Monferno in an attempt by Roger to convince Silus not to take on the Hora League.

Personality
While little of Mightyena has been seen, it has been shown using a powerful, suggesting that it is very loyal and fond of Roger.

Abilities
Mightyena is an excessively powerful Pokémon, having competed in all of Roger's Gym Battles, and, presumably in the Caspia Conference as well. Its true skill is shown when it battles Silus's Monferno and easily defeats it.