Gallade

Gallade is truly an awesome Pokemon, both in appearance and in its competitive value. The STAB Fighting-type attacks Close Combat and Drain Punch provide it with excellent coverage and allow it to effectively annihilate a huge number of Pokemon. One of Gallade's best traits is its ability to utterly destroy most of the tiers special walls, clearing an easier way for the rest of your team to sweep. Gallade also boasts an expansive movepool, which includes Swords Dance and Bulk Up for setup, and coverage moves such as Ice Punch, Shadow Sneak, Night Slash, and Stone Edge. To top it off, Gallade receives the Justified ability from the Dream World, allowing it to gain an Attack boost by switching into a Dark-type attack.

Although Gallade is ridiculously strong after setting up, its Defense is paper-thin, meaning that it can be easily revenge killed, especially after a stat drop from Close Combat. Gallade is also relatively slow; it spends so much time showing off its sleek blades, that it is easily outsped by Pokemon such as Flygon, Crobat, and Rotom-A, which can easily revenge kill it. Still, Gallade is a huge threat to watch out for.