Suicune

With a great defensive typing and amazing natural bulk, Suicune acts as a solid bulky Calm Mind sweeper as well as a check to common foes like Gliscor and Heatran. Suicune's ability Pressure allows it to outlast a large range of Pokemon that could otherwise wall it, which includes Chansey, Gastrodon, Quagsire, and Clefable, as well as stall out moves with low PP like Leaf Storm from Serperior. Suicune is also able to beat other bulky Calm Mind users thanks to Pressure as well as its access to Roar. Suicune does, however, struggle to consistently take on attacks due to its lack of recovery outside of Leftovers and Rest, which leaves leaving it passive for two turns if it is lacking Sleep Talk. Suicune also lacks a large movepool, making it very predictable.