SpongeBob SquarePants

Jack M. Crazyfish

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This is the page about Jack M. Crazyfish. For other uses, see Jack (disambiguation).
Jack M. Crazyfish
Jack M. Crazyfish
Residence: Bikini Bottom, Pacific Ocean
Physical appearance
Gender: Male
Color: Lavender
Eye color: Light yellow with black pupils
Classification: Fish
Cousins: Mable
Friends: SpongeBob
Patrick Star
Enemies: SpongeBob SquarePants (formerly)
Sheldon J. Plankton
Series information
First appearance: "Blackened Sponge"
Latest appearance: "20,000 Patties Under the Sea"
Portrayer: Greg Baldwin ("Blackened Sponge")
Mr. Lawrence ("20,000 Patties Under the Sea")
List of characters

Jack M. Crazyfish[1] is a big purple fish who is the main antagonist of the episode, "Blackened Sponge." He is a fish in SpongeBob's dreams, but he is actually real, and lives in Bikini Bottom.


Jack is a lavender fish with a very big body. He wears a brown suit and a yellow shirt underneath. He has a big mustache and a small green top hat on his head. His skin is light purple.


SpongeBob gets a black eye from trying to take the lid off his toothpaste but he punches himself in the eyeball but makes up a story that he got it from fighting Crazyfish. Crazyfish then comes to the Krusty Krab because he heard that SpongeBob makes great Krabby Patties, and he's hungry for one. He also makes a cameo appearance in "20,000 Patties Under the Sea," throwing rocks at Plankton.



Title Role(s) in episode
"Blackened Sponge" (tr) Debut
"20,000 Patties Under the Sea" (tr) Cameo


  • His voice is different on his first appearance ("Blackened Sponge") from his second appearance ("20,000 Patties Under the Sea").
  • Ever since his first appearance in "Blackened Sponge," he has become a cameo character in "20,000 Patties Under the Sea."
  • When he walks into the Krusty Krab, SpongeBob says "He's real." However, when SpongeBob tells Sandy about him, she seems to know about him, possibly because she may have seen or met Crazyfish.
  • It's unknown what the middle name "M." stands for.
  • Jack M. Crazyfish has never appeared outside of the fifth season.
  • He is portrayed as a dangerous and evil fish in "Blackened Sponge."


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