Marceline is depicted in a dynamic, mid-air pose with her iconic long midnight hair sweeping behind her. The sculpt captures her pale skin tone and sharp, confident features, with a sly grin that hints at her musician-survivor persona. She holds a detailed bass guitar in her left hand, the instrument featuring wood grain and metallic hardware, while her right hand is poised as if strumming. The costume blends dark tones with subtle color accents inspired by Adventure Time aesthetics. The paintwork emphasizes shading and texture on her jacket and skin, while the base evokes a moonlit forest scene with silhouettes in the distance.

Marceline Abadeer is a centuries-old vampire ruled by curiosity and a wry sense of humor. Born of a human father and a demon father, she survives by her music and quick wit, often choosing her own path over the expectations of adults. Her arc in Adventure Time explores friendship, identity, and the value of memories. She forms reluctant alliances with Princess Bubblegum and the Candy Kingdom crew, while maintaining a rebellious streak. The figure evokes this dual nature: a fearless musician who can be tender in quiet moments, a survivor whose empathy shines amid battles and songs.