Joltik

Black: Joltik that live in cities have learned a technique for sucking electricity from the outlets in houses.

White +2: They attach themselves to large-bodied Pokémon and absorb static electricity, which they store in an electric pouch.

Black 2 +3: Since it can’t generate its own electricity, it sticks onto large-bodied Pokémon and absorbs static electricity.

Sword: Joltik can be found clinging to other Pokémon. It’s soaking up static electricity because it can’t produce a charge on its own.

Shield: Joltik latch on to other Pokémon and suck out static electricity. They’re often found sticking to Yamper’s hindquarters.