This is the page about the purple fish. For other uses, see Billy (disambiguation).

Billy is a kid fish who first appears as the secondary antagonist of the episode "Friend or Foe."


He is a light purple fish with faded-blue lips and wears a red shirt and a white and blue cap.

Role in series

"Friend or Foe"

Billy is shown as the leader of a group of class bullies at Poseidon Elementary School who constantly make fun of Mr. Krabs about his clothes and call him "Rag Boy" and also bully Plankton for his small size and brilliant intelligence.

"Picture Day"

He is among a small mob of troublemaking teenagers who run rampant through Bikini Bottom, attacking people with ketchup.

"The Clash of Triton"

He appears as a baseball player at the Baseball Field.

Nicktoons MLB

He appears in the Bikini Bottom field.

"Don't Look Now"

He is one of the kids who stars in the horror film Fisherman 4: Attack of the Hook.


  • He is the first child bully to be shown in the series.
  • Despite being a teenager in "Picture Day," he does not look nor sound any different than he does a first grader in "Friend or Foe."