History Recap / AdventureTimeS3E9FionnaAndCake

** The Ice Queen is far more competent and threatening than her male counterpart, foreshadowing that the opposite-gender versions of the characters are part of a story the Ice King made up.

* DistaffCounterpart: Fionna for Finn, Cake for Jake, Prince Gumball for Princess Bubblegum, Lord Monochromicorn for Lady Rainicorn and Ice Queen for Ice King.

* DistaffCounterpart: Fionna for Finn, Cake for Jake and Ice Queen for Ice King.

* AgeLift: Fionna is clearly significantly older than the 13-year-old Finn and roughly appears to be Prince Gumball's age, probably to make the romantic subtext between her and the 18-year-old Prince Gumball way less squicky. Justified in-universe by the fact that it's all a story, and that the Ice King seems to be into the concept of an older female Finn.

* AttractiveBentGender: The Ice Queen is probably the best example out of all the genderbent characters, as she appears taller and much younger than the actual Ice King and wears a beautiful blue gown. Justified, as she exists in a fanfiction of his creation. It's also because [[WordOfGod Natasha Allegri]], who designed her, has said that she finds attractive villains far more unsettling than ugly ones.
* AuthorAvatar: Ice King has two, Ice Queen and himself as an overly, perfect vision of himself.

-->'''Ice King''': And then the Ice King married them all! [[TheEnd THE END!]]

* FlatWhat: Prince Gumball delivers this when Fionna reveals herself to be in love with Ice King.

** When Cake tries on the Ice Queen's tiara and her ice powers, Fionna knocks it off shouting "You'll catch her crazy!". Since the Ice King wrote this in-universe, this is foreshadowing for the revelations later in the season about the Ice King's past and the origins of his power.

* InterspeciesRomance: Gumball has this with Fionna, though she rejects him for Ice King.

* MoreDeadlyThanTheMale: Ice Queen is much more competent than the Ice King. Justified, as it's a fanfiction of Ice King, so he probably made her competent regardless of her gender.

* NestedStoryReveal: At first the episode seems like a gender-flipped episode done for laughs, but then the end reveals it's Ice King's fanfic he's reading to Finn and Jake.

* MasterOfDisguise[=/=]LatexPerfection: Ice Queen's disguise as Prince Gumball was pretty much spot-on, unlike the Ice King's [[PaperThinDisguise Bubblegum disguise]].

* SomethingCompletelyDifferent: A GenderBender episode for the main cast.

* SpecialEditionTitle: "Fionna and Cake" had every character who appears in the opening replaced by their gender-swapped counterpart. Even the singer of the theme song was changed from a male one to a female.
* TheVoiceless: Lord Monochromicorn only talks in Morse Code. He does this by stomping and pawing at the ground.

* ActionGirl: Fionna and Cake, being as {{Badass}} as Finn and Jake.

* {{Foreshadowing}}: When Cake tries on the Ice Queen's tiara and her ice powers, Fionna knocks it off shouting "You'll catch her crazy!". Since the Ice King wrote this in-universe, this is foreshadowing for the revelations later in the season about the Ice King's past and the origins of his power.

* AgeLift: Fionna is clearly significantly older than the 13-year-old Finn and roughly appears to be Prince Bubblegum's age, probably to make the romantic subtext between her and the 18-year-old Prince Bubblegum way less squicky. Justified in-universe by the fact that it's all a story, and that the Ice King seems to be into the concept of an older female Finn.

* AmazonChaser: Gumnball is attracted to Fionna both for her strength and beauty. However this was actually Ice Queen in disguise and simply flattering Fionna into a trap, but the real deal also thinks she is 'incredible' when fighting.

* MasterOfDisguise[=/=]LatexPerfection: Ice Queen's disguise as Prince Gumball was pretty much spot-on, unlike the Ice King's Bubblegum disguise.

* GenderBender: The entire cast gets this, boy characters becoming girls and girls becoming boys. It's a rare example of usually fan based gender flops being promoted in a television show.

* AgeLift: Fionna is clearly significantly older than the 13-year-old Finn and roughly appears to be Prince Bubblegum's age, probably to make the romantic subtext between her and the 18-year-old Prince Bubblegum way less squicky. Justified in-universe by the fact that the Ice King seems to be into the concept of an older female Finn.