girl who struggles with issues pertaining to attraction and romance. Cake (voiced by Roz Ryan) – Cake is the gender-swapped version of Jake, and is a cat instead of a dog. Cake is sarcastic and boisterous but is also Fionna's loyal friend. Much like Jake, she possesses the power to stretch her body into a myriad of convoluted shapes. Prince Gumball (voiced by Neil Patrick Harris) – Gumball is the gender-swapped version of Princess Bubblegum. He is the frequent victim of the Ice Queen's kidnapping schemes and appears that he harbors some sort of feelings for Fionna. The Ice Queen (voiced by Grey DeLisle) – The Ice Queen is the gender-swapped version of the Ice King. Much like her male counterpart, the Ice Queen is constantly scheming to kidnap a mate (her most frequent target being Prince Gumball). Lord Monochromicorn – The gender-swapped version of Lady Rainicorn. While Lady speaks in Korean & English, Lord Monochromicorn communicates exclusively via Morse code. Lord Monochromicorn and Cake are in a relationship together. Production "Fionna and Cake" was written and storyboarded by Rebecca Sugar and Adam Muto from a story developed by Mark Banker, Patrick McHale, Osborne, and series creator Pendleton Ward; it was directed by Larry Leichliter. The genesis for the episode were drawings that character designer and storyboard revisionist Natasha Allegri posted online. Her creations were eventually canonized by the show's producers. Allegri even re-rerecorded the show's theme—which had originally been sung by series creator Pendleton Ward—for the episode. Sugar intended "Fionna and Cake" to both be "a jab [and] a huge celebration of, the feeling of being fan" and "allowing something completely ridiculous to make your heart tighten". Sugar and Muto significantly changed the story from its original outline, as the very first version of the episode did not feature the Ice Queen, the ball, or the crystal sword. The second act of the story featured Gumball and Fionna going on a date in a restaurant, rather than on an adventure. Sugar also wrote several lines for Marshall Lee—Marceline's male counterpart—but they were cut for time. Sugar "begged" Ward to let her work the character back into the story somehow, but the character only appeared in a non-speaking cameo. Sugar originally wanted the character to be voiced by Dante Basco, although he would later be voiced by Donald Glover in subsequent Fionna and Cake episodes. Neil Patrick Harris was Sugar's