Hydreigon

Hydreigon is a premier special attacker in UU thanks to its exceptional power and respectable Speed tier. Its spammable STAB combination, great coverage, and access to a few different utility options allow it to viably run a plethora of sets, including Choice Scarf, utility sets with Defog, and a stallbreaking set that utilizes Taunt. Hydreigon also has respectable bulk for an offensive Pokemon, with resistances that allow it to easily take on Pokemon like Chandelure, Mega Houndoom, and Celebi. Moreover, its access to Defog allows it to function as a reliable offensive entry hazard remover that can clear hazards when it forces switches. However, Hydreigon's typing also provides it with weaknesses to common types in Bug, Fighting, and especially Fairy, which can at times limit its opportunities to switch in. Hydreigon is also weak to priority attacks like Mach Punch and Vacuum Wave, which can allow the likes of Infernape and Lucario to pick it off with some prior damage. Lastly, Hydreigon suffers from the presence of faster threats despite its decent Speed tier, meaning that Pokemon such as Latias, Cobalion, and Mega Beedrill can easily outrun non-Choice Scarf sets and force Hydreigon out.