Slowbro is the second and final evolutionary stage for Slowpoke. The Shellder that is latched on to Slowpoke’s tail is said to feed on Slowpoke’s leftover scraps of food. In “Island of the Giant Pokémon,” the band of lost Pokémon encounter a lonely Slowpoke sitting on top of a rock looking out over the ocean. After Pikachu asks it for help and directions, Slowpoke sticks its tail in the water evolves into Slowbro!
First appearance: Episode 17—”Island of the Giant Pokémon”