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.
Fire Red:
Leaf Green:
Its armored body makes all attacks bounce off. The armor is too tough, however, making it heavy and somewhat sluggish.