Hitmonchan

Say hello to what is possibly the most dangerous Pokemon in NU. This dominance is thanks to a lot of factors: a fantastic offensive and defensive typing, great stats, an almost perfect movepool that includes Mach Punch, which is probably the best priority move in a metagame sorely lacking in them, and a huge amount of viable sets, making Hitmonchan pretty unpredictable. Along with all of its amazing qualities, Hitmonchan is also about the only viable Fighting-type available in NU apart from Machoke, giving it a place on every offensive team to crush the common Normal-, Rock-, and Steel-types of the tier. With practically unique access to Rapid Spin, Hitmonchan is a staple on stall and defensive teams as well. Hitmonchan is the reason Sableye and Chimecho are as important and good as they are in the tier, despite Hitmonchan having ways to bypass them and every other counter to it. Prepare well for Hitmonchan, and consider it on every team you make; your teams will likely be made better with its addition.