FusionDex

Ferrotik attach to host Pokémon using their thorns. Ferrotik slowly drain energy and nutrients from their host, converting it into the electricity they need to survive. Trainers are advised to check for Ferrotik when grooming their companions.

They attach themselves to large-bodied Pokémon and absorb static electricity, which they store in an electric pouch. They stick their spikes into cave walls and absorb the minerals they find in the rock.