I was wondering about a few Pokemon and why they are in Ubers. Tapu Koko (sure, has good speed but bad offensive and defensive stats for Ubers), Alolan Muk, Blissey, Bronzong, Shuckle, Slowbro, Skarmory, Wobbuffet and Xurkitree (I know, put a Choice Scarf on this thing and it becomes a beast, but it's special attack is the only good stat). Can anyone explain why they are in Ubers?