Marceline the Vampire Queen Worn: Tsukino Con Marceline, the Vampire Queen (full name: Marceline Abadeer) is one of the main characters in Adventure Time and a half-demon/half-Vampire who is over a millennium old. During her first encounter with Finn and Jake, she requests that they leave their tree fort as the area belongs to her. Depiste initially being their enemy, Marceline quickly becomes one of Finn and Jake's closest friends. Her father is the demon who rules the Nightosphere.