While wandering through the ruins of a city destroyed during the Mushroom War, Simon Petrikov discovered a stuffed animal. He gave it to his young ward, the vampire Marceline. She named it Hambo.
Marceline lived on for centuries, long after Simon had descended into madness. Hambo remained Marceline's most precious possession. It was a fragment of innocence from a childhood largely bereft of it.
Alyson Bates made this plush replica of Hambo. It rests next to a replica of Marceline's ax bass.