Genesect

Genesect's decent base Speed stat allows it to outrun a plethora of major threats in the Doubles metagame. Genesect also has great attacking stats, letting it take on the role of a physical or special attacker and making it easy to fit on teams. Its BoltBeam coverage is stellar, and its attacking prowess can be boosted significantly by a favorable Download boost. It also has access to STAB U-turn, which allows it to scout out the enemy team and makes it a potent Choice Scarf user. Its typing leaves it with only one weakness, albeit a large one, but unfortunately, its bulk leaves it unable to fully take advantage of it. Genesect fears paralysis and is dead weight in Trick Room, so it needs teammates that can cover those weaknesses.