Stakataka

Stakataka possesses a unique niche in the UU tier, as its respectable Attack stat in conjunction with one of the lowest Speed stats in the game gives it a monstrously strong Gyro Ball. In addition, Stakataka's ability to accrue boosts upon KOing opposing Pokemon through Beast Boost combined with its access to Trick Room can make it a devastating late-game sweeper under the right conditions. A Steel typing and massive 61 / 211 / 101 bulk make Stakataka a decent choice for offensive teams that struggle with common threats such as Latias and Crobat. However, Stakataka's secondary Rock typing hinders its defensive utility by leaving it vulnerable to common bulky Water-types like Swampert and Suicune and compounding its weakness to Ground- and Fighting-type moves, making Stakataka extremely vulnerable to common Pokemon in UU like Krookodile, Cobalion, and Hippowdon as well as leaving it extremely vulnerable to Mach Punch and Vacuum Wave from Infernape and Lucario, hindering its capacity to clean up under Trick Room. Stakataka is also extremely one-dimensional, as its movepool is quite limited outside of Trick Room and its STAB moves. Thus, the same pool of Pokemon that can check Stakataka will always be reliable stops to it.