Shelgon

Ruby: Inside SHELGON’s armor-like shell, cells are in the midst of transformation to create an entirely new body. This POKéMON’s shell is extremely heavy, making its movements sluggish.

Sapphire: Covering SHELGON’s body are outgrowths much like bones. The shell is very hard and bounces off enemy attacks. When awaiting evolution, this POKéMON hides away in a cavern.

Emerald: It hardly eats while it awaits evolution. It becomes hardier by enduring hunger. Its shell peels off the instant it begins to evolve.

FireRed +2: Its armored body makes all attacks bounce off. The armor is too tough, however, making it heavy and somewhat sluggish.

Diamond +7: Within its rugged shell, its cells have begun changing. The shell peels off the instant it evolves.

HeartGold / SoulSilver: It surrounds its body in an iron-hard shell to accumulate enough power to evolve.

Omega Ruby: Inside Shelgon’s armor-like shell, cells are in the midst of transformation to create an entirely new body. This Pokémon’s shell is extremely heavy, making its movements sluggish.

Alpha Sapphire: Covering Shelgon’s body are outgrowths much like bones. The shell is very hard and bounces off enemy attacks. When awaiting evolution, this Pokémon hides away in a cavern.

Sun: The cells within its shell transform with explosive speed, preparing it for evolution.

Moon: They lurk deep within caves—motionless, neither eating nor drinking. Why they don’t die is not known.

Ultra Sun: The cells within its body are changing at a bewildering pace. Its hard shell is made from the same substance as bone.

Ultra Moon: Shelgon lives deep within caves. It stays shut up in its hard shell, dreaming of the day it will be able to fly.

Sword: This Pokémon has covered its body in a hard shell that has the same composition as bone. Shelgon stores energy for evolution.

Shield: Shelgon ignores its hunger entirely, never eating any food. Apparently, Shelgon will evolve once all its energy stores are used up.