Eren Yeager + drilbur
Reasoning: croagunk has knock off and sludge bomb, both crippling moves, removing items, or having a 30% chance to poison. Whilst stuff like hippo, vullaby and shellos are good walls for gunk, being poisoned will ruin their effectiveness as a wall later on in the match. Being a more offensive pokemon, drilbur cares about being poisoned less, and doesn't need it's eviolite as much as the other mons. Trubbish is immune to both these things, but the set kind of sucks.