The queen of hearts is a demonic entity that possesses and moves from person to person through a playing card. She serves under the god, Chaos, and wishes to be his queen.

Her name was once Jezebel. She resided in ancient Babylon where she served as the high priestess for the notorious Cult of Chaos. She charmed men and women alike with her enticing beauty. A trait she would use to lure them into her cult and then later sacrifice them to the Mad-god Chaos. Jezebel wound up doing most of Chaos bidding until she rebelled against him, demanding that she be his queen and most of all gain immortality. Angered by her demands, Chaos ripped the flesh from her body and trapped her very essence in a playing card as a punishment. Even though she got her wish of being immortal, she was bodiless and forced to be trapped in a "Queen of Heart" card for eternity. However, she does remain loyal to Chaos and still continues to serve him with human sacrifices preferably ten human hearts, which preferably must be evil.