Drapion

Drapion is a very prominent Pokemon in the RU metagame, possessing a very nice defensive typing with only one weakness and an immunity to Psychic-type attacks. This typing makes its STAB combination very threatening offensively as well. Furthermore, Drapion can function in a variety of roles, including setup sweeper, revenge killer, and occasionally a specially defensive set. Drapion possesses a variety of effective moves such as Knock Off, Poison Jab, Pursuit, and Toxic Spikes. This gives Drapion plenty of utility as a Pursuit trapper and a Toxic Spikes setter. Furthermore, Drapion checks and counters many top-tier Psychic-type threats, such as Meloetta and Sigilyph, while also being able to revenge kill troublesome Pokemon like Virizion with Choice Scarf. Accordingly, Drapion fits on a plethora of builds. However, Drapion's awkward Speed tier leaves it outsped by Pokemon like Flygon and Sigilyph, and its low base Special Defense makes it hard for Drapion to switch into even resisted moves like Leaf Storm from a Life Orb Venusaur frequently.