Weavile

Weavile is an excellent revenge killer in BDSP OU. Its amazing Speed tier is one of its biggest advantages, as it is faster than the entire unboosted metagame, allowing it to outspeed the likes of Latias, Alakazam, and Garchomp; this and its access to priority make it a solid late-game cleaner. Its great offensive typing and power also gives it some wallbreaking prowess. All of these assets make it a near unstoppable threat, able to burst through common checks such as Scizor and Heatran with Assurance. However, Weavile's susceptibility to Stealth Rock and frailty mean it requires solid entry hazard removal and slow pivoting to bring it in safely in order for it to wallbreak. Its frailty also makes it prone to strong priority from Infernape, Breloom, and Lucario, rendering its high Speed useless. Furthermore, it can still get walled by Pokemon like physically defensive Scizor, Skarmory, and Poliwrath, although the former is uncommon and the latter two are rarely seen outside of stall.