Lightning Gremlin appears in 1990's Gremlins 2: The New Batch and is a normal Gremlin until drinking an electrifying potion in the Clamp Center lab turns it into pure electricity. Eventually, Billy traps the Lightning Gremlin in the Clamp Center phone system and many spoilers ensue, but suffice it to say that our energetic friend here has a major role in the movie's ending.