Lucario

Lucario is a playable character in Super Smash Bros. Brawl, entering from the Pokémon series 4th Generation of games. He was confirmed through a Sticker screenshot which showed Lucario's icon at the bottom, but it wasn't officially confirmed until later, when Nintendo started leaking game videos on the game just days before Brawl's Japanese release. It is unknown what Lucario's moveset is, neither is it known what his statistics are, but it is known he'll play a part in the Subspace Emissary, in which he will assist Snake at some point in the game. He also appears to fight Meta Knight and the Ice Climbers at one point in the story.

Lucario appears to replace Mewtwo, another Super Smash Bros. Pokemon fighter.

Lucario has a special property no one else in Brawl has - the more damaged Lucario is, the more damage and knockback all his attacks do. It seems to max out at 200% damage. A move that normally did 15% damage did 26% damage when he was at 200%, and knocked the opponent back about twice as far as normal.

Recently, two gameplay videos have been found. They can be found here and here.

Special Moves

 * Standard: Aura Sphere
 * Side: Name Unknown. Lucario takes a kneeling stance and places his palms in front of himself. After a brief delay he fires a short range burst of of blue energy.
 * Up: Name Unknown. Lucario stops moving for a brief moment and then dashes in a chosen direction.
 * Down: Name Unknown. Lucario performs a defensive, tai-chi like, animation. If he is attacked from the front during this animation he teleports behind his opponent and strikes them.
 * Final: Focus Blast.