Pokemon's First Appearance: Pokemon Red, Blue & Yellow

Trust us, we're pained that Charizard is in the top 20 and not top 10. But it has to be done. Charizard is one of the best out there: it's a half Dragon, half Fire monster that can do anything from Fissure and Hyper Beam to Dragon Rage and Dynamic Punch, and has great speed, power and stamina. But it's very weak to Rock attacks, taking four times as much damage than any other type of attack. Its 534 base stat total wouldn't save it from a barrage of Rock attacks from a Pokemon at the same experience level. Please don't scorch us with your flames, Charizard. We truly do love you.