High Quality Content by WIKIPEDIA articles! Marceline the Vampire Queen is a main character in the American animated television series Adventure Time created by Pendleton Ward. She is voiced by Olivia Olson in most appearances, by Ava Acres as a child and by Cloris Leachman as an old woman. Marceline is a fun-loving 1,000-year-old trickster vampire queen. The character makes her debut in the first season episode "Evicted!" and functions as an antagonist, forcing Finn (voiced by Jeremy Shada) and Jake (voiced by John DiMaggio) from their home. However, as the series progresses, Marceline becomes a close friend of Finn and Jake. Information regarding her early life is few and far between, however, her demon-father Hunson Abadeer (voiced by Olivia`s real-life father, Martin Olson) has appeared in several episodes.