Kakuna

“Almost incapable of moving, this POKéMON can only harden its shell to protect itself from predators.”

— Pokémon Red

“Able to move only slightly. When endangered, it may stick out its stinger and poison its enemy.”

— Pokémon Yellow

“Although it is a cocoon, it can move a little. It can extend its poison barb if it is attacked.”

— Pokémon Gold