Sparky, also known as Jelly, is the first jellyfish that is attracted to SpongeBob's hole song. It only appears in "SpongeHenge."
It looks like a regular pink jellyfish with four stingers. On the top section of its head are five dark irregular shaped spots in different sizes.
Role in episode
After wind starts blowing through SpongeBob's holes during the night and creates a song, Sparky is the first jellyfish to hear it and flies through SpongeBob's holes in attraction.