Marshall Lee the Vampire King is a demon character in the Adventure Time cartoon series. He resembles the gender-swapped version of Marceline. Marshall Lee has the same abilities as Marceline, series creators even pictured him eating the color red like Marceline, and he mentions, drinking red from your heart in one sitting. He also sings and plays guitar. Can turn into a bat and raises the dead like Marceline. An Adventure Time cursor with Marshall Lee and Guitar.