Grubbin is a small larva-like Pokémon with large, orange-tipped pincers. Mostly white, it has 2 yellow dots on the side of its body. Its head is primarily brown, with a yellow-rimmed orange helmet-like structure and a sideways, jagged mouth.
Grubbin love electricity, and live around power plants.
Grubbin is capable of spewing a sticky web from it jaws, which it can then use to swing around from tree branches.
Grubbin evolves into Charjabug at level 20 and then into Vikavolt when leveled up at Vast Poni Canyon.