Gray's Charizard

This is Charizard, Gray's partner from the anime.

Story
Charizard is Gray's Fire/Flying and partial Dragon type from the Johto region and now in the Alola region. Charizard is Gray's strongest pokemon and his best friend, He has been through countless adventures with Ash and the others and is very kind hearted, Gray had Charizard as a Charmeleon for 3/4 of a year before he evolved into Charizard, Charizard is an all around stat type, possessing lots of speed, defense, and attack, as well as lots of special attack and defense, Charizard's signature move is Scratch and Slash because of his long claws, the flame on his tail is also extremely dangerous.

Sinnoh, Johto, Kanto and Hoenn
During the early regions, Charizard was a Charmander and stuck like one until the end of Diamond Pearl where he evolved into Charmeleon, Charmander was very strong and independent during the early days, only wanting to battle on his own until he evolved and began to depend on Hypno and Dragonair.

Unova and Kalos
Charizard was a Charmeleon throughout these regions and was Gray's favorite, as well as knowing multiple Dragon type moves. Charmeleon was always hateful towards Team Rocket, During the end of Kalos, Charmeleon evolved into Charizard after Ash left, and Gray departed to the Alola region to seek out Ash, but not before saying hello to the Kanto region.