Terrakion

Terrakion is one of the strongest wallbreakers in the UU tier thanks to its high Attack stat and amazing STAB combination. It can also work as a fearsome setup sweeper with Swords Dance, as it's able to pressure and break through a lot of stall and balance teams. Despite facing competition from other Fighting-types like Infernape and Cobalion, Terrakion sets itself apart from them due to its ability to beat common Fighting-type answers like Togekiss and Moltres, its better Attack stat, and its access to Justified. However, Terrakion's typing is very poor defensively, making it easily exploitable and weak to a lot of priority moves like Bullet Punch, Mach Punch, and Aqua Jet and common typings, such as Steel, Psychic, Ground, and Fighting. The Defense and Special Defense drops caused by using Close Combat only aggravate this weakness. On sets utilizing a Z-Move, Terrakion can be easily exploited by bulky threats like Hippowdon and Alomomola that can tank a hit from it and cripple it after it has used its Z-Move. Terrakion is also outsped by a lot of common threats in the metagame, such as Latias and Gengar, meaning it can have a hard time sweeping.