Although she eventually managed to slay him, she was turned in the process, becoming the Vampire Queen. However, when she tried to fight the Vampire King himself, she was bitten. She soon discovered that, upon killing a vampire, she was able to acquire their unique abilities by using her demonic powers to absorb souls. A young half-demon named Marceline took it upon herself to protect the last of the human race and inevitably hunted the vampire race into near-extinction, doing so with relative ease. However, Marceline is the only vampire who has been shown willing to live this way.įollowing the aftermath of the Mushroom War, there was a large surge of vampires that began stalking the remaining humans in Ooo. Their history is not well known, and, unlike traditional vampires, it appears vampires in the Adventure Time universe are not limited to surviving exclusively on blood, but are capable of sustaining themselves on 'shades of red,' such as the colour in strawberries.