. The defining wallbreaker of OU for what feels like time immemorial. Knock Off is a move which nothing in the tier ever wants to see as items are maybe more important than ever but no absorbing items exist, even when they're weak, and Weavile's will chunk almost anything. Dark, Ice, and Fighting is a match made in heaven for gen 8 coverage as Dark chunks most, Ice provides a wide array of supereffective coverage and Fighting covers the omnipresent Steel types for Ice without any pertinent immunities.
Its best defensive check cannot recover from Knock Off, meanwhile
will struggle against neutral coverage from it after being run down. As one of the scariest teambuilding threats, Weavile is my nomination for one of the metagame's top 10 titans.
edit: also it goes zoom