The Ghosteroid is a giant Ghost from outer space which was lured in to slime and annihilate Pac-World by Dr. Buttocks, who soon found out that the Ghosteroid would also annihilate the Netherworld too, so they are forced to root for Pac to stop the Ghosteroid.

Numerous Ghosteroids appeared in episodes Cosmic Contest and Cap'n Banshee and His Interstellar Buccaneers.


As mentioned above, the Ghosteroid is a giant dark purple Ghost with a blue ring surrounding it.


  • The Ghosteroid is destroying PacWorld and NetherWorld.
  • Its name is a portmaneau of "ghost" and "astroid".