Torterra

Torterra's niche largely comes from its good coverage, access to Rock Polish, and solid natural bulk making it a functional late-game sweeper that can be difficult to take down without super effective coverage. Torterra can also support its team as a wallbreaker in matchups where sweeping is unlikely, which gives it some flexibility. Unfortunately, Torterra's low Speed makes it incredibly reliant on obtaining a Rock Polish boost to not be immediately threatened by the myriad of Pokemon faster than it, such as Aerodactyl, Sigilyph, Sneasel, and Delphox. Additionally, despite Torterra's great coverage, it struggles greatly with Pokemon like Weezing and Dhelmise that are too bulky to overwhelm without Swords Dance. Torterra is also marred by a neutrality to Water and a severe weakness to Scald, which harms its ability to be put on a wide variety of teams given the opportunity cost of using it over other, more consistent Grass-types like Whimsicott and Sceptile.