Shelgon is a Dragon-type Pokémon introduced in Generation III.
It evolves from Bagon starting at level 30 and evolves into Salamence starting at level 50.
Shelgon lives deep within caves—motionless, neither eating nor drinking. Why they don't die is not known. It stays shut up in its hard shell, dreaming of the day it will be able to fly. The shell peels off the instant it evolves.
This Pokémon's shell is extremely heavy, making its movements sluggish.