Charizard has been one of Pokémon's most iconic mascots since the franchise's inception. As such, the fire lizard has received a lot of special attention. It was the face of Pokémon Red and its Generation III remake, and it was made one of Ash Ketchum's best party members. However, more recent generations played especially hard on the Flame Pokémon's nostalgia bait. Generation VI granted it two Mega Evolutions in Mega Charizard X and Mega Charizard Y, though Mega Charizard X is the one that was pushed the hardest. Generation VII made Charizard into a flyable Ride Pokémon in all of its mainline games. Generation VIII granted it a Gigantamax form and made it Champion Leon's signature Pokémon.
Source：https://www.cbr.com/pokemon-dark-tera-charizard-new-gimmick/
