Butterfree

Butterfree's main claim to fame is its access to Quiver Dance, a claim shared by several other Bug-types. However, what sets Butterfree apart from the rest are its access to Sleep Powder and its two abilities: Tinted Lens and Compoundeyes. Tinted Lens allows Butterfree to power up resisted moves on sweeping sets and thus to reduce the need for coverage moves, while Compoundeyes makes Butterfree's support options more accurate. Of course, Sleep Powder is the move which truly makes Butterfree viable, as it prevents most would-be counters from safely switching in and creates valuable setup opportunities that Butterfree would otherwise not have due to its poor bulk. Unfortunately, Butterfree is still plagued by its poor typing and defenses. While Butterfree might be versatile, the prevalence of Stealth Rock significantly cuts down on its longevity and effectiveness in the NU metagame.