|The following information is from the Adventure Time comic book series. It may not be part of the same canon or continuity as the animated series.|
Adventure Time with Fionna and Cake Issue 4 is the fourth issue of the six part miniseries by BOOM! Studios starring the gender-swapped characters.
Prince Gumball asks Fionna about Flame Prince and she tells him the story of what happened and shows him one of Ice Queen's crystals and Gumball recognizes it as a heated salt crystal. He tells her that the crystal absorbs heat and the one inside of Flame Prince will eventually evaporate him into nothing. Gumball puts Flame Prince inside his oven until they find a way to help him and Fionna goes to the bathroom. While she's in the bathroom, Lumpy Space Prince sneaks into the castle, steals Fionna's wand sword and uses it to make himself really handsome.
He returns to Lumpy Space and all the women fawn over him and give him gifts. However, they soon become so infatuated with him that they capture Lumpy Space Prince and stick him in a glass ball for display. Fionna eventually arrives, free Lumpy Space Prince and demands he return her wand sword. When his fangirls try to stop her from taking Lumpy Space Prince, they try and tell them not to be manipulated by his handsomeness. However, it becomes clear that Lumpy Space Prince and the Lumpy Space People have learned nothing, so Fionna just punches his face back to normal.
As the fangirls leave, Lumpy Space Prince gives Fionna back her wand sword and apologizes. As Fionna leaves Lumpy Space, she tells him if he start doing good things people will realize how beautiful he really is.
- The cover bears a resemblance to the 1925 novel The Great Gatsby.