Pokemon With Ability overcoat:

shellder cloyster pineco forretress shelgon burmy wormadam-plant sewaddle swadloon leavanny solosis duosion reuniclus escavalier shelmet vullaby mandibuzz jangmo-o hakamo-o kommo-o varoom revavroom wormadam-sandy wormadam-trash kommo-o-totem enamorus-therian