Carbink

Carbink is one of the best Trick Room setters in the tier thanks to its access to Sturdy, which give it great odds at setting Trick Room successfully. It is also one of PU's niche special walls thanks to its amazing defensive typing and stats, which allow it to check threatening offensive Pokemon such as Drampa, Oricorio-G, and Simisear. Furthermore, these traits almost guarantee that Carbink will set up Stealth Rock in a match. On the downside, Carbink's abysmal Speed leaves it as an open target for Taunt users like Jellicent. Despite Carbink's amazing defenses, its low HP stat, along with its weakness to common attacking types like Water, Ground, and Grass means that it struggles to take hits from powerful attackers such as Omastar and Victreebel, which both 2HKO Carbink with ease, and while Steel-type coverage moves may not be as common, Steel-types like Alolan Sandslash and Aggron can easily exploit Carbink's 4x weakness. Unfortunately, Carbink faces competition from other bulky Stealth Rock users such as Regirock and Torterra, which have a combination of better offensive presence, better stats, and better support movepools. Despite these weaknesses, Carbink still holds a niche as one of the best Trick Room setters, and its ability to switch into Drampa is unrivaled.