- For the 1985 incarnation, please see Monkian
Prior to being selected to serve Mumm-Ra, Addicus had committed crimes so vile that the Bird nation was about to execute him. The Lizard leader Slithe and the Jackal leader Kaynar rescued Addicus from his exection. Addicus subsequently attacked and ate the Birds present after claiming he was owed a last meal.
Addicus was a brutal creature, which made him the ideal tool for Mumm-Ra's army. For his part the undead sorcerer did not think highly of Addicus, stating that Addicus was guilty of crimes that were vile even to him.