Marceline the Vampire Queen – Marceline is a half-demon vampire, and the eponymous Vampire Queen, after having killed the previous Vampire King, according to Ward. Although she is over a thousand, she appears in the form of a young adult. In addition, the circumstances surrounding her transformation into a vampire are unknown. She is usually shown playing her axe bass, which was formerly her family's heirloom battle axe. Marceline and her father, Hunson Abadeer, have trouble accepting one another. Initially, Marceline feels that her father does not care for her, and expresses her feelings through music. Furthermore, Abadeer constantly pressures Marceline to follow in the family business and take over ruling the Nightosphere, a prospective job Marceline does not want. Marceline and the Ice King also have a complicated relationship. In the episode "I Remember You", it is revealed that the Ice King—then, the human man named Simon Petrikov—befriended Marceline during the aftermath of the Mushroom War.