Muk

Muk is pretty solid as far as Poison-types go, especially among the ones that can absorb Toxic Spikes. Its solid Attack and Special Defense as well as good movepool allow Muk to tango with some of the most powerful special attackers in the tier. It has a unique ability which causes its contact moves to be capable of inducing poison, which is not only great for inflicting chip damage on opponents, but it's also hilarious when your Ice Punch poisons someone. What separates Muk from other slow Poison-types is Shadow Sneak, which turns it into a good offensive check to frail threats such as Haunter. However, Muk is slow and easy to wall as its coverage moves aren't quite strong enough to get the job done against bulkier opponents, and common weaknesses in Ground and Psychic hold it back. However, Muk still holds its own well in the NU metagame, and anything that can poison you while smacking you at the same time shouldn't be taken lightly.