Fly

From SmashWiki, the Super Smash Bros. wiki

Fly is Charizard's Up Special Move. Performing the move makes Charizard rise up while surrounded in flames, setting anyone that makes contact with it ablaze. The ending hitbox has somewhat forceful knockback, which can make this move good for juggling. During this attack Charizard is immune to knockback. This can be most easily shown by performing this move next to a smart bomb; Charizard will take all damage he would normally but will not be knockedback similar to Ike's Up B.

[edit] Origins

This attack has its origin in all the Pokémon RPG games for handhelds. As an HM, it can allow the user to travel from town to town very easily provided that a Pokémon knows it, the badge that allows its use outside of battle, and you have been to the city or town you are flying to. Due to this, many have Flying Pokemon on hand to cross long distances in seconds. In battle, it allows the user to avoid almost any attack on the first turn and then deals damage to a single opponent on the second.

Charizard's Special Moves
Standard Special Move:	Flamethrower
Side Special Move1:	Rock Smash
Up Special Move:	Fly
Final Smash2 Contribution:	Fire Blast (of Triple Finish)
1: In Super Smash Bros. Melee and Super Smash Bros. Brawl only. 2: In Super Smash Bros. Brawl only.