Metagross is a new type of Pokemon that appears out of a Poke Ball in Super Smash Bros. Brawl. It is a common character to come out of a Poke Ball. When it comes out of a Poke Ball, it begins its attack, which is called Hammer Arm. So, when Metagross appears out of a Poke Ball, it will say something and then strike its arm into the ground. It will struggle to pull its claws out of the ground, however once it does, it will strike its opposite arm into the ground. Metagross repeats this process two more times using his right arm and then his left arm before disappearing. Anyway, when any character, excluding the summoner, comes in contact with Metagross they will be buried underneath it. Then, when Metagross strikes its arm into the ground, the character (s) buried underneath (or any character that happens to come in contact with Metagross at this point) it, will take a pretty decent amount of Knockback, making this move very able and promising to KO opponents. Metagross' attack can also break Crates and Capsules, raise Party Balls so that they release Items, set off explosives and even more. For a common Pokemon character in Brawl, Metagross' attack has pretty decent KO power. Also, if Metagross is summoned on a soft platform, its attack will cause it to fall through the platform. Metagross also has its own Trophy in Super Smash Bros. Brawl.
Metagross' Trophy in SSBB
An Iron Leg Pokemon. When two Beldum combine, they evolve into a Metang. In the same way, a Metagross is the result of two Metang combining. It's said to have intelligence that can match a supercomputer. Though it weighs 1,212.5 pounds, it is somehow able to fold up its legs and float.