Red / Blue: Almost incapable of moving, this POKéMON can only harden its shell to protect itself from predators.
Yellow +2: Able to move only slightly. When endangered, it may stick out its stinger and poison its enemy.
Gold / HeartGold: Although it is a cocoon, it can move a little. It can extend its poison barb if it is attacked.
Silver: From this form, it will grow into an adult. As its body becomes soft er, the external shell hardens.
Crystal: Nearly incapable of movement, it leans against stout trees while waiting for its evolution.
Ruby / Sapphire: KAKUNA remains virtually immobile as it clings to a tree. However, on the inside, it is extremely busy as it prepares for its coming evolution. This is evident from how hot the shell becomes to the touch.
Emerald: It remains virtually immobile while it clings to a tree. However, on the inside, it busily prepares for evolution. This is evident from how hot its shell becomes.
FireRed: This POKéMON is in a temporary stage while making its body. It is almost completely unable to move on its own.
LeafGreen: Almost incapable of moving, this POKéMON can only harden its shell to protect itself when it is in danger.
Diamond +7: While awaiting evolution, it hides from predators under leaves and in nooks of branches.
SoulSilver: From this form, it will grow into an adult. As its body becomes softer, the external shell hardens.
X: Almost incapable of moving, this Pokémon can only harden its shell to protect itself when it is in danger.
Omega Ruby / Alpha Sapphire: Kakuna remains virtually immobile as it clings to a tree. However, on the inside, it is extremely busy as it prepares for its coming evolution. This is evident from how hot the shell becomes to the touch.
