on level 53
It will lern metormash at level 53 meteor mash*
In Pokemon Pearl, Diamond, HeartGold, and SoulSilver, Metagross can learn Stealth Rock by using TM76 on it.Since TM76 is no longer Stealth Rock in Black and White, if you want a Metagross that knows it in those games, you must use the TM in one of the earlier games and trade it to Black or White.
meteor mash
To get Metagross, make sure you have a Beldum. Then raise it so it can evolve into Metang. Then evolve it at level 45 but I rather make it evolve at level 50 because Metang can learn the move Meteor Mash then let it evolve into Metagross.
level 595,584,395,492,000 Don't give bad answers like that. It's level 55.
Yes, you can have a level 50 Metagross with Meteor Mash. you have to trade it to your Pokemon Diamond/Pearl/Platinum through Pal Park. Pal Park opens up after you receive the National Pokedex. (On your DS game...) It learns Meteor mash at level 55. However you can still make a metang not evolve (by pressing b during evolution or giving it an everstone.) and make it learn Meteor mash at level 50 and only let it evolve at 50 (it usually evolves at lv.40)and then you will have a metagross with Meteor mash at level 50.
Metagross can only learn Earthquake with the use of a TM.
No.
get beldum from steven and evolve it into metagross and train it until it lerns the move
Metagross learns Hammer Arm on level 45.
It can learn it via the TM but not by level.