Pokemon's First Appearance: Pokemon Gold, Silver & Crystal

Now, before you think we're trolling you, hear us out. Miltank is actually a total badass that would probably leave Charizard in absolute pain. Miltank can learn an attack for every one of Charizard's weaknesses, including its lack of immunity toward Rock attacks. And Miltank's speed, stamina and power isn't that bad, either. Sure, Miltank's base stat total is nowhere close to Charizard's, and Charizard can learn some Fighting attacks that could compete against Miltank, but Miltank would still probably come out on top.