Marshall Lee

Marshall Lee (full name: Marshall Lee the Vampire King ), is the gender-swapped version of Marceline, created by the original series designer, Natasha Allegri, who is featured in "Fionna and Cake." In the episode, he is seen attending Prince Gumball's Biennial Gumball Ball.

Abilities
Marshall Lee presumably has the same abilities as Marceline, since he was first seen floating. Some official artwork shows him eating the color red, just like Marceline.

Appearance
Marshall Lee has a slim body, an average height, Black hair, pointy ears and gray-blue skin. He has a matching permanent bite mark like Marceline's. In "Fionna and Cake," he is seen wearing a red plaid shirt with grey stripes, dark blue jeans, and brownish-red and white sneakers. Like Marceline, he is physically 16-18 years old. In other words, Marshell Lee is exteremly ugly. :))

Personality
He appears to have an interest in music like Marceline, as he's shown to own a bass guitar, and he greeted Fionna with the sign of the horns, a very popular hand sign amongst heavy metal and rock fans.

Trivia

 * Rebecca Sugar said that she thought for Marshall Lee to have a few lines, but they were cut due to time limitations. She wanted him to be voiced by Dante Basco.
 * In an interview with Pendleton Ward at Comic-Con, he stated that the next gender-bent episode would mostly focus on Marshall Lee.
 * An alternate character sheet depicts him with green skin, but it was only used in one scene with special lighting conditions.
 * When Marshall Lee does the "Sign of the Horns" he has five fingers instead of the usual four.