Grimer

Appearing in filthy areas, Grimer thrives by sucking up polluted sludge that is pumped out of factories. In "Pokemon Scent-Sation," our heroes arrive at the Celadon City Gym where wonderful perfumes are manufactured using Pokemon spores and nectars. The gym leader, Erica, tells a story of her childhood: a Gloom protected her from an attacking, foul-smelling Grimer which led her to be a Grass Pokemon Trainer.

First appearance: Episode 26—"Pokemon Scent-Sation"