Ninjask

Ninjask is the fastest Pokemon in the NU metagame and can use its Speed to outspeed almost everything. Coupled with Infiltrator and a STAB U-turn it becomes a very competent revenge killer and pivot that can revenge kill boosted threats even without a Choice Scarf. However, thanks to non-existent defenses, a barren movepool, and a huge Stealth Rock weakness, Ninjask rarely gets to switch in against threats and requires a decent amount of support to function at its best. It also competes with Choice Scarf Scyther for a slot on a team; Ninjask has a significantly stronger U-turn and outspeeds most of the same threats, but it lacks Technician to boost its low-powered moves.