Mach Punch is an offensive Fighting-type move.
Mach Punch inflicts damage and is an increased priority move. If the target does not use an increased priority move during the round that it is used, Mach Punch will go first regardless of the user's or target's speed. If the target also uses a move with an increased priority of +1 during the same round that the user uses Mach Punch, the attack order of the users will be determined normally. If the user is put to sleep or frozen during the round that Mach Punch is (or attempts to be) used, Mach Punch's increased speed priority will not be reset. Subsequently, it will only be reset on the turn after the user wakes up or is defrosted, or if the user switches out.
Pokémon that learn Mach Punch
By leveling up