Severin von Kusiemski or "Gregor"
A man in love, whose ideas about women lead him into attempts at enslaving her. He is dominant and believes that he should control his lovers. In the end, they flip the script and play with role reversal, and Wanda treats Severin as a slave called "Gregor."
Wanda von Dunajew
Wanda is reluctant at first, and offended by Severin's domineering personality, but eventually, it grows on her, and she discovers a deep sexual desire for dominance. Eventually, they travel to another country where they flip relationship on its head. Wanda recruits three women to help her dominate her lover and humiliating.
Alexis Papadopolis
A brooding anti-hero who is even more alluring and sensual than "Gregor," causing Wanda to leave Severin for another man. Alexis is something like a stag in Wanda's relationship toward Gregor. She humiliates Gregor by becoming extremely subservient to Alexis.