Sparky, also known as Jelly, is the first jellyfish that is attracted to SpongeBob's hole song. It appears in the episode "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. Lastly, it has a magenta line above the spots.
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.