Oculus tentaculus

Oculus (given the scientific name Oculus tentaculus by Gibson) was a monster created from the Skeleton King's own eye, which he unleashed upon Shuggazoom in the hopes of hypnotizing all of its citizens. The beast was ultimately defeated by Chiro, who was able to skillfully bide his time until the sun had risen, which burnt the beast to a crisp, freeing all who were under its control.

Oculus has only appeared in the episode, Shadow Over Shuggazoom.