Slowbro

“The SHELLDER that is latched onto SLOWPOKE's tail is said to feed on the host's left over scraps.”

— Pokémon Red

“Lives lazily by the sea. If the SHELLDER on its tail comes off, it becomes a SLOWPOKE again.”

— Pokémon Yellow

“If the tail-biting SHELLDER is thrown off in a harsh battle, it reverts to being an ordi­ nary SLOWPOKE.”

— Pokémon Gold