Marceline the Vampire Queen is a 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 name "Marceline" is based on the middle name of a childhood friend of Ward's, Marie. The artistic design for Marceline was created by Ward, with small changes and additions added by Phil Rynda, former lead-character designer and prop designer for Adventure Time. Unlike a traditional vampire, Marceline does not need to drink blood to survive; rather, she eats the color red. Marceline is a musician who plays an electric bass that she made from her family's heirloom battle-axe.