Ivysaur

Ivysaur is a Grass/Poison-type Pokémon from the Pokémon series whose only Mario-related appearance is in Super Smash Bros. Brawl as a playable character (one of Pokémon Trainer's Pokémon) and a Trophy.

Super Smash Bros. Brawl
In Super Smash Bros. Brawl, Ivysaur appears as one of Pokémon Trainer's Pokémon along with Squirtle and Charizard. Ivysaur is found during the Subspace Emissary part of the game as a Trophy sitting inside a cave before Pokémon Trainer battles Charizard. Pokémon Trainer throws a Pokéball at it and it is caught. After that Ivysaur is used by the Pokémon Trainer in battle.

Bullet Seed
This is Ivysaur's standard special move. When used, Ivysaur will shoot a barrage of seeds upwards into the sky, hurting anyone who happens to jump over Ivysaur. There is an actual attack in the Pokémon series, known as Bullet Seed, which can be learned by Ivysaur, but not naturally. Bullet Seed can be used by Kirby after Ivysaur's powers have been copied.

Razor Leaf
Razor Leaf is the name of Ivysaur's side special move. In this move, Ivysaur will shoot out a faintly-glowing leaf at an opponent. The attack moves very slowly, but if an opponent is hit by it, the opponent will take 7% damage.

However, in the Pokémon series, a player would shoot out a great deal of very speedy leaves, although in Brawl, it is just one very slow leaf.

Vine Whip
This is Ivysaur's up special move, and will make use of the Tether Recovery tactic. When Ivysaur is sent falling off the edge, the player should use Vine Whip, and Ivysaur will grab onto a ledge with its vine, and retract the vine, to bring itself back up safety. However, the vine does have a limit to how far it can reach, and it won't go too far. Vine Whip does more damage if the opponent is hit farther along the vine; being hit by the tip of the vine causes a substantial amount of damage.

Pokémon Change
Pokémon Change is Ivsaur's down special move. It returns Ivsaur into its Pokéball and sends out Charizard instead. If Squirtle used Pokémon Change, it returns into its Pokéball and Ivysaur gets sent out. Ivysaur cannot be damaged while it is using Pokémon Change.

Solar Beam
Ivysaurs role in Triple Finish is to use Solar Beam. Much unlike Squirtle and Charizard, Ivysaur shoots this devastating beam from the plant on its back. This part of the attack traps the foe and keeps them from dodging the entire Final Smash.

Trivia

 * The name "Ivysaur" is a combination of the words ivy (from its ability to use ivy vines as arms and hands) and dinosaur (due to its dinosaur-like appearance).
 * Ivysaur's up smash attack, up aerial attack, and down aerial attack are very similar as they all revolve around releasing an explosion out of its flower bulb on its back.