Karoleen was once a concubine in training for the Mygorgs, like Starfire. When she tried to escape, the Mygorgs fired flaming arrows at her and burnt half of her face beyond repair.
Karoleen believed that the Mygorgs did what they did because they were men, and decided she hated men from then on. The citizens of her settlement were all women and the men were all made to be slaves and servants.