Monster Arm (character)

"You'll never get rid of me, I'm part of you now! You can threat the symptoms but you'll never cure the virus!"

- Monster Arm's last words The Monster Arm was Marco's replacement right arm that appeared in the Disney XD animated series Star vs. the Forces of Evil, voiced by Corey Burton. He was created by accident when Star tried to fix Marco's broken arm with her wand.

The arm is shown to have a mind of its own and a desire to eat the bowels of humans. Once finding out about its intentions and its bad influence on Marco, he gets Star to change it back to his normal arm, leaving behind a threat that he will remain a part of Marco.

Appearance
The arm is basically a large tentacle creature with a pink underside and light pink suction cups. Most of the arm is deep blue and fades to purple at the tip of the tentacle, covered in pink slime. Its teeth are dull yellow and sharp and two suction cups above resemble eyes.