Squidward's brain is an internal organ in Squidward's head. It first appears in the episode "Squidtastic Voyage."

Role in series

"Squidtastic Voyage"

It is among Squidward's organs seen by SpongeBob and Patrick after they go inside Squidward to find his clarinet reed.

"Breath of Fresh Squidward"

At the beginning of this episode, it rains because of Squidward's anger, but later, when he gets an electric shock and becomes happy, a rainbow appears.

"What Ever Happened to SpongeBob?"

Towards the end, after SpongeBob returns to Bikini Bottom, Squidward somehow is able to open his head, and he throws his brain into the garbage can.

"Suction Cup Symphony"

Squidward's brain is again raining, but the rain halts and is replaced by a rainbow when Squidward comes up with a good musical symphony.

"Eek, an Urchin!"

Squidward's brain is seen in the shape of a drum, popping out of his right ear to represent the pain inflicted upon him due to hearing SpongeBob scream into the Krusty Phone.


  • Inside is a worm, which does not like rain.
  • Squidward's brain only has one Happy Gland.
  • In "Keep Bikini Bottom Beautiful," it is revealed that one of Squidward's brain veins says, "I am angry." in all caps.

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