This papercraft is Marceline (the Vampire Queen, full name: Marceline Abadeer) with her Guitar, one of the main characters in American animated television series Adventure Time and a vampire that is over a millennium old, the paper model created by X3darts. During Finn and Jake's first encounters with her, she requests that they leave wherever they are as the areas belong to her. Though initially an enemy to them, she quickly becomes one of Finn and Jake's closest friends. Her father is the demon who rules the Nightosphere.
Marceline has light blue-gray skin and long, midnight black hair that reaches to her feet. She also sports two marks on her neck which could be the bite mark that turned her into a vampire. Despite being over a thousand years old, her appearance and personality is that of a late teenager. In the episode "Go With Me," her hair is shaved into an undercut, which reveals that she has pointy ears. She is very thin and sometimes appears to be thinner than Princess Bubblegum; however, her shape can vary slightly depending on who is drawing her. She is usually floating in the air but when she stands next to the other main characters she is taller than them. In most of her transformations, she is shown to have green eyes. Her looks are more likely as a result of her half-demon heritage than her Vampirism.
Marceline is described as a wild rocker girl. Centuries of wandering the Land of Ooo have made her a fearless daredevil. She is a lover of all things exotic and still travels across the land often. She has a mischievous personality and is rarely intimidated. Despite seeming evil at first, Marceline is a trickster at heart, and her "evil plans" often turn out to be nothing more than elaborate jokes. She is described by Finn as "a radical dame who likes to play games." She loves to play pranks on Finn and Jake. She also occasionally has violent outbursts, as shown in "It Came from the Nightosphere." Though during her line in the song, in Evicted! she stated that since she has been alive for over a thousand years she had lost her moral code.
She can also be sentimental. She was very emotionally attached to her teddy bear Hambo, which was given to her by Simon Petrikov; and after Ash sold it to a witch, she was furious and broke up with him.
Marceline seems to be a little emotional. For example, in "What Was Missing," she seemed to be more "aggressive" towards Princess Bubblegum than she usually is. She is also very independent, and in early episodes would often act without concern for Finn or his friends. It is easier for Marceline to express her feelings through music, as seen with "The Fry Song" and "I'm Just Your Problem," but has trouble expressing them otherwise. She keeps a diary that she uses for inspiration for songs as seen in "Marceline's Closet." When Marceline read the lyrics to "Remember You," the song that Simon Petrikov wrote for her, she began to cry.
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