Smeargle

Smeargle has been one of the most feared Pokemon to face since the ruleset was first announced, as it was allowed to use one of the best (and arguably overpowered) moves on the doubles scene: Dark Void. This 80% accurate move puts both foes to sleep when it is used, and it is a powerful asset for Smeargle. This is backed up by a literally endless support movepool courtesy of Sketch. Add onto this its decent, albeit middling, Speed, and you have one of the best supporters in the format. However, Smeargle's bulk is nonexistent, and it lacks any offensive presence, making it complete Taunt bait. Additionally, its Speed is still middling, meaning that it can be outpaced by every common Taunt user while being too fast to be good under Trick Room. Finally, it faces stiff competition from Amoonguss and Pachirisu as a user of redirection moves.