Pangoro

Pangoro is a great wallbreaker in RU. With its power, near-unresisted STAB combination, and coverage, it can 2HKO or OHKO the whole metagame, outright taking advantage of common Steel- and Dark-types like Registeel, Bronzong, and Umbreon. It's one of the tier's best Fighting-type wallbreakers, lacking hard counters unlike Lucario and Heracross. Pangoro also has another key advantage—priority in Bullet Punch, which revenge kills weakened setup sweepers. Choice Band Pangoro is the most immediately threatening set; it takes down the likes of Rhyperior and physically defensive Registeel with minimal prior damage and isn't worn down by Life Orb recoil. Alternatively, Swords Dance Pangoro deals with Umbreon and revenge killers like Gardevoir and Togekiss. Pangoro's low Speed and lackluster defensive profile make it poor against highly offensive teams, which are filled with fast Pokemon that OHKO it like Lucario and Sharpedo. Also, while Pangoro is near unwallable, Lucario and Heracross are faster, allowing them to better threaten offensive Pokemon like Xurkitree, Goodra, and Chandelure. Lucario is also a fearsome sweeper with Extreme Speed, and Bewear has superior defensive utility; Fluffy lets Bewear check Pokemon like Golisopod, makes it harder for Crobat to revenge kill, and even lets it help versus other Fighting-types if it holds Chople Berry.