>>53864885Charizard wins, plain and simple. You never hear anyone in-universe wanking Steven's Metagross or Cynthia's Garchomp the way Leon's Charizard is universally praised. He's a walking myth, and a genuine demigod, master of flames and creature of hell, when dynamaxed. Genetically, with Leon's training, and with it's years of uninterrupted victory, it's probably THE strongest non-legendary walking the earth, period.
Next would be Red's Pikachu (with a light-ball boost), and then it's a toss up between Garchomp and Metagross. After that it's probably a tie between N's Zoroark and Blue motherfucking Oak's Eevelution. Then Alder's Volcarona and Lance's Dragonite, and the rest would be a tier below this.