Machamp

Machamp's niche over other Fighting-types in the RU tier is its ability Guts, which can transform it into a powerful wallbreaker with Flame Orb, boasting over 590 Attack, while maintaining the flexibility to switch its moves and not worry about Toxic. Machamp's STAB move usefully threatens many of the tier's Stealth Rock setters, including Registeel, Rhyperior, and Gigalith, and the rest of its movepool allows it to either OHKO or 2HKO the remainder of the metagame. Even stall teams have little in the way of checks for Machamp, as Close Combat, Knock Off, and Facade can break through everything in conjunction with Machamp's Guts-boosted power and ability to switch moves. However, Machamp competes for a spot with Bewear and Pangoro, the tier's other premier Fighting-types, which both have access to Swords Dance along with better physical bulk in the former's case and a stronger Knock Off for the latter. In addition, without defensive investment, Machamp is fairly easy to revenge kill due to its poor Speed tier and lack of a STAB priority move, and it is worn down quickly thanks to residual damage stacking up from Flame Orb and pivoting into entry hazards.