As a result of disobeying them, Lumpy Space Prince is chased out of Lumpy Space and transported into the land of Ooo. In the episode, Lumpy Space Prince is depicted as a Marty Stu character, being described as an altruistic, philanthropic, selfless, and incredibly handsome prince who feeds his people gold-painted sandwiches as 'presents.' His parents, however, are slobbering monsters who desire the prince to be a monster and force him to eat worms and sharpen his teeth. His third appearance, which also marked his first major appearance, is in ' The Prince Who Wanted Everything.' His character was written by Lumpy Space Princess, who dreams to be with him. His second appearance was in ' Bad Little Boy,' where he was hosting a party. He appeared in the season three episode ' Fionna and Cake' and the season five episode ' Bad Little Boy.' In 'Fionna and Cake,' he made a cameo appearance, shown drinking from a blue cup. Peter Serafinowicz (' The Prince Who Wanted Everything') Lumpy Space Prince is the gender-swapped version of Lumpy Space Princess. Pendleton Ward (' Bad Little Boy'), (' The Prince Who Wanted Everything'), (' Five Short Tables')