Monoeices is a person in two parts. In almost all uses, she is an ageless member of the Shadowless working to unwind Ahm's plan and bring Kona to an end. However, she is also a healer from the First Age, who was given the power of the Shadowless and her mask by Paramedes.

Monoeices was a healer and doctor in a village in the First Age, who saw the beginning of the calamity that would lead to the Xanthous and the end of the First Age. Her family and village fell ill, and she was unable to save them despite the help of Paramedes, himself acting as a healer.

After their deaths, she pledged herself to Paramedes's greater plan. She seems to maintain some belief that the souls of those she lost can still be saved.