I know this is an old post but I'll answer anyway. Any Pokémon that can learn trick. This is just a simpler way to counter FEAR Pokemon. Or yeah mold breaker cause now a days haxorus is maybe the easiest mold breaker Pokemon to get so far unless you count mega gyarados. Trick gets rid of that stupid sash. Sure you'll still take a butt load of damage but since you still have about 10-12 HP quick attack won't kill you. I found that regular Alakazam with Magic guard is most effective. Magic guard blocks out damage from non-direct attack damage, as in the damage from sandstorm and hail, already blocking out FEAR Aron. It blocks out damage from poison and burn, blocking out FEAR magnemite. It also blocks out the extra damage taken from bind, wrap, and infestation. Yeah sure, sucker punch, but try excessively raising defensive stats and HP and you'll wall it pretty well. And also dat FEAR rattata will fear extreme speed. Well thnx for reading this, and I hope I helped anyone in need of getting rid of those stupid troll FEAR strategies.