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I Live in Your Basement! (Cover)

Keith, as seen on the cover of I Live in Your Basement!

Keith is the monster in the sixty-first Goosebumps book, I Live in Your Basement!.


Keith was a monster with the ability to warp realities and transform into anything. Keith's goal was to make Marco his slave. But in the end, it turns out he is a normal human-like monster who wishes not to be seen by Marco.

General Information

Physical appearance

Keith looked like a yellow blob of human organs connected by webs of purple veins in his dream. But, he really looks like a normal boy.


He had the power to go into Marco's dreams and change his mind.


  • Keith is not a child (as believed).
  • Keith is one of the villains who did not fail.

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