History WesternAnimation / AdventureTimeFionnaAndCake

* BittersweetEnding: [[spoiler: While Fionna doesn't get to be a hero like she wanted, she learns to appreciate her mundane world for its own merits, while the mundane world is now infused with magic to become a bit more like Ooo from the adventure, including Cake keeping her powers and speech, showing middle ground between a "Mundane" life and a "Magical" one. Meanwhile, not only does Simon ''still'' [[DidNotGetTheGirl lose Betty in the end]], but she shows him that their relationship, for all its merits, [[AllTakeAndNoGive was always too one-sided in his favor]], ending up like it did because Betty always had to sacrifice something for Simon. But she also tells him she's made peace with her choices, and gives him the strength to do the same, finally move on, and make the most of his new life rather than dwelling on the past]].

!!WARNING: Spoilers for this show are marked as usual. However, since this is a sequel to ''WesternAnimation/AdventureTime,'' spoilers for that series are left unmarked. [[Administrivia/YouHaveBeenWarned YOU HAVE BEEN WARNED!!]]

* AnAesop:
** "Never give up on your life because you think someone else matters more".
** While it’s perfectly normal to wish for something more in your life, you should also appreciate what you have now and make the best of it, even when not everything goes your way, instead of dwelling on something (or someone) you have lost.

* WorldOfTechnicolorHair: In Fionna's world, most of the magical characters of Ooo are normal humans, but they still often have hair of unusual colours similar to their alternate equivalents, such as Gary having pink hair, Fern having green hair (with flowers in it), and Ellis P having purple hair. [[spoiler: It turns out that Fionna's world is the gender-flipped Ooo of her original adventures after Simon Petrikov's sanity was regained, and the hair is a remnant of their original forms.]]

** This also applies to the Farmworld and its version of Finn. In "Crossover", Finn and Jake defeat the Farmworld Lich and free Farmworld Finn from the ice crown, Prismo has it destroyed, and Farmworld Finn is last seen reunited with his family. In "Destiny", 14 years later, Big Destiny and his gang took over the town by claiming to be the ones who defeated "the Snowman", oppressing the people even further. Meanwhile, Farmworld Finn, having PTSD from his time as Ice Finn as well as the loss of his wife, isolated himself and his family from the rest of the world.

On December 5th, 2023, the show was renewed for a second season.

''Adventure Time: Fionna and Cake'' is an animated spin-off miniseries of ''WesternAnimation/AdventureTime'', focused on Finn and Jake's genderbent counterparts created by Natasha Allegri. The spin-off was produced by Adam Muto and premiered on August 31, 2023 on Max, with two episodes per week. This is the first installment of the franchise to be targeted towards a mature audience, with a TV-14 rating.

* AlternateUniverseReedRichardsIsAwesome: The Winter King appears to be this at first. Being a version of Simon that actually overcame the crown's insanity through his own will and created a winterey paradise. However, [[spoiler:It's revealed that he accomplished this by channeling the crown's insanity into his universe's Princess Bubblegum.]]

''Adventure Time: Fionna and Cake'' is an animated spin-off miniseries of ''WesternAnimation/AdventureTime'', focused on Finn and Jake's genderbent counterparts created by Natasha Allegri. The spin-off is being produced by Adam Muto and premiered on August 31, 2023 on Max, with two episodes per week. This is the first installment of the franchise to be targeted towards a mature audience, with a TV-14 rating.

** Since the start of the series, all what Fionna ever wanted is to live magical adventures because she is bored out of her mind with her mundane life. When she gets her wish, she’s obviously elated, [[spoiler:until her travels across the Multiverse with Cake and Simon make her realize that there might be a steep price for living out her fantasies, mainly how her actions and goals would affect in a negative light her loved ones, often by not taking into account about their opinion and feelings.]]

* Since the start of the series, all what Fionna ever wanted is to live magical adventures because she is bored out of her mind with her mundane life. When she gets her wish, she’s obviously elated, [[spoiler:until her travels across the Multiverse with Cake and Simon make her realize that there might be a steep price for living out her fantasies, mainly how her actions and goals would affect in a negative light her loved ones, often by not taking into account about their opinion and feelings.]]

** All of the relics Simon mentioned during his PowerPoint in "Jerry" are relics that have appeared throughout the series. Among them is the Armor of Zeldron from "Blood Under The Skin", the Wand of Dispersment from "Sons of Mars" and "Skyhooks II", the Lamb Relic from "Beyond this Earthly Realm" and The Enchiridion with the episode explaining the newspaper picture from "I Remember You" where Simon was shown to have found it with Betty's help.

** Farmworld Finn, having lost his wife, has become closed off and takes him family to the edge of civilization to avoid dealing with Big Destiny.