Larvitar

Rock Skin Pokémon ^#246

Born deep underground, it comes aboveground and becomes a pupa once it has finished eating the surrounding soil.

It feeds on soil. After it has eaten a large mountain, it will fall asleep so it can grow.

- Guts
  Whenever this Pokémon is asleep, burned, paralyzed, or poisoned, it has 1.5× its Attack. This Pokémon is not affected by the usual Attack cut from a burn. This bonus does not count as a stat modifier.

- Sand-Veil
  During a sandstorm, this Pokémon has 1.25× its evasion, and it does not take sandstorm damage regardless of type. The evasion bonus does not count as a stat modifier. Overworld: If the lead Pokémon has this ability, the wild encounter rate is halved in a sandstorm.

Raised on nutrients it finds in the dirt, it eats
roughly a mountain’s worth of dirt before
it becomes a pupa.