Charizard

Charizard is a fire/flying-type Pokémon, and the fully evolved form of Charmander. In Super Smash Bros. and Super Smash Bros. Melee, It would eventually come out of a Poké Ball, spitting fire to either sides of it, burning the characters.

It also appears as a playable character in Super Smash Bros. Brawl. However, it is not an actual new character, per se, but rather one of the Pokémon used by the Pokémon Trainer, the real character. However, Charizard, as well as Squirtle and Ivysaur, does all the fighting for the Pokémon Trainer. Charizard is the last Pokémon to be used by Pokémon Trainer, coming after Squirtle and Ivysaur. When Pokémon Change is used while Ivysaur is in use, Ivysaur will be returned, and Charizard will be sent out. After Charizard, the Pokémon queue will start with Squirtle again. Charizard is the heaviest of the group. Charizard is also able to glide.

In the Subspace Emissary, Charizard is the last Pokémon that the Pokémon Trainer collects. Lucas and the trainer first see Charizard flying into a mountain and Pokémon Trainer points out to Lucas that it is the third Pokémon he must collect. After traveling through the mountain, Pokémon Trainer and Lucas find Charizard who attacks them at sight. The two battle the large Pokémon and after defeat, Charizard is turned to a trophy. The trainer collects the trophy and Charizard joins the party.

Special Moveset in Super Smash Bros. Brawl
Charizard's moveset is different from the other Pokemon, but it shares Pokemon Change and Triple Finish with them.

Flamethrower
Flamethrower has been Charizard's attack since Super Smash Bros. In the first two games, Super Smash Bros. and Super Smash Bros. Melee, Charizard would use Flamethrower when released from the Poké Ball. This would damage all the opposing players. In Super Smash Bros. Brawl (in which Charizard is a playable character rather than a Poké Ball Pokémon), it is Charizard's standard Special Move. When used, Charizard will shoot fire in the direction it is facing, which will damage the opponents, similar to its attack in the first two games, and Bowser's Fire Breath. However, Charizard's Flamethrower causes more damage and has a larger range of effect than Bowser's Fire Breath. Kirby can use this move after copying Charizard's powers. This is actually Charizard's signature move in the Pokémon series.

Rock Smash
Rock Smash is Charizard's Side special move. When used, Charizard will pull out a big rock, and smash it with its head, devastating any players hit by the "exploding" rock. The attack is based on the actual Pokémon attack called Rock Smash. It is a close range attack.

Fly
Fly is the Up Special Move of Charizard. All that happens is that every time the attack code is pressed, Charizard flaps its wings once to fly upwards. It is also engulfed in fire to launch and burn foes above it. This is not often used, due to Charizard's three jumps and gliding ability are usually able to send him back. This can be used, however, as an effective battle move. This move has almost no horizontal distance, similar to the Super Dedede Jump. As such, it is best for Charizard to use its two midair jumps, glide, then use Fly. Charizard's weight and its ability to do two extra air jumps makes fly one of the worst recovery moves in the game.

Pokemon Change
Switching out Charizard will summon Squirtle.

Fire Blast
In the move, Triple Finish, Charizard continually blasts the foe with powerful shots of fire. This attack is the finisher of the final smash, the other two rack up damage.

Trivia

 * Charizard's Japanese name, Lizardon, is also the name of a character from the game, Wario's Woods.
 * Charizard's name is a combination of the words char (meaning burnt) and lizard (since it's a lizard-like creature).