If you were looking for the article about the episode, then see Whirly Brains.

The Whirly Brain is a toy that first appears in and is the main plot of the episode "Whirly Brains." It later makes cameos in "Plankton Gets the Boot" and "Bubble Bass's Tab."


The Whirly Brain is a flying pink brain with eyes, a long stem, and a propeller on the top. The toy's box contains a monster mask to scare someone so one can connect the propeller to the brain to play with it. The Whirly Brain can also produce brain gas out of the stem by pressing the button on the remote control.

Role in series

"Whirly Brains"

SpongeBob and Patrick buy Whirly Brains at the Bikini Bottom Toy Shop after watching an advertisement on television. They use the Whirly Brains to play pranks on Squidward, Mrs. Puff, Mr. Krabs, and several other Bikini Bottomites, until a kid challenges them to a race, but as they play, the Whirly Brains end up getting stolen by a grouchy old man who keeps them in a barrel. With Sandy's help, the Whirly Brains are returned.

The old man explains that the reason why he stole them was because he was jealous of seeing kids having all the fun and wanted to experience flight. SpongeBob and Patrick decided to donate the Whirly Brain propellers to the old man and he happily flies around in the air.

"Plankton Gets the Boot"

It can be seen on top of a pile of board games in SpongeBob's house when he and Plankton are watching a movie.

"Bubble Bass's Tab"


  • The title of this product is a possible reference to Whirlybirds.
  • Whirly Brains are a reference to remote-control helicopters and toy drones.
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