SlimYim is a flesh jester, with the face of a Gomball. His head is pure white, and wears a jester hat with 3 bells, with the main part of the hat being made of flesh. They have a fleshy torso with exposed ribs, and sink into the ground with fleshy tentacles growing into the ground of the CRUMBL CUBE.

He also is seen to be very manipulative and skillful. Not all Jester are like this, it is SlimYim's personality. However, the motive to this type of personality is unknown.

They like to eat Iron