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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.