History WMG / AdventureTimeFinnAndJake

* ''Franchise/AdventureTime'' is a perpendicular universe to Futurama. Magic/mystical elements are known to exist in Futurama(Scruffy is a zombie), and [[ForWantOfANail the nail]] is that Mildred Fry never existed, thus preventing both Fry's existence and a paradox from cancelling the MyOwnGrandpa scenario. For all we know [[ETGaveUsWiFi Bender's ass gave us wi-fi]], so more research into magic began. Said magic, of course, led to the Mushroom War. Magic is still present; Applied Cryonics were based off the freezing powers of the Ice Crown, and Simon could've been the one who created it in the first place. The head jars are Magitek.

[[WMG: Finn will have a DangerousSixteenthBirthday, complete with Badass Upgrade.]]

*** [[HappyPlace Maybe PB turning 13 was]] [[LotusEaterMachine just a little gift from the lich.]] The snail could also be the Lich looking into Finn's mind.

* The 'weird horns' bit, at least, is {{Jossed}}; "To Cut A Woman's Hair" has him [[spoiler:finally take his hat off to [[TheReveal reveal]]...a head of [[HairOfGoldHeartOfGold glorious]] rapunzel [[CompressedHair hair]]]]. And noodly limbs aren't [[PlanetOfHats exactly]] [[RubberHoseLimbs uncommon]] in Ooo.

It was actually the Lich mentally manipulating Finn. Billy revealing that Finn's dad was alive and trapped in the Citadel originally came from the episode "The Lich", in which "Billy" was actually the Lich possessing his body. Not to mention, the one who seemed to benefit the most from the Citadel arc was the Lich himself, at least [[SpannerInTheWorks until Finn splashed him]] [[ReviveKillsZombie with Guardian blood]]. Billy's titular bucket list included a point of telling Finn "that thing". The ''real'' thing Billy wanted to tell him may have been that Finn's biological father was a criminal and not worth looking for or trying to be like. Or it very well could've been something completely unrelated, and the Lich used the ambiguity of that item on the list to manipulate Finn into trying to gain access to the Citadel.

* '''Finn''' and '''Rama''': Both are extraordinarily [[ThePolyanna optimistic]], [[IncorruptiblePurePureness pure-hearted]] young men who are raised to love adventure from an early age, and are raised in foreign environments that put them at odds with their origins. Finn is the lone human living in a post-apocalyptic world inhabited solely by magical creatures; Rama is a mortal avatar of Vishnu, and spends his whole life living among humans.

In the first fourth seasons of the series, most of the actions done by Finn were motivated by his desire to become a hero like Billy. However, after what happened in "The Lich" [[spoiler: With Billy being killed and Finn being easily manipulated by the Lich into almost causing the extinction of all life]] Finn lost his confidence and started to question his own dreams and goals. That´s why in the fifth season of the series he seems to be much less heroic than in the previous four seasons (In "Davey" Finn assumes a new, non-heroic identity to hide himself from his fans. In "Puhoy" he dreams about some kind of "perfect" world for him, where he could have a family and where everything is soft and nonthreatening.) This could be the reason of his immature behavior in the most recent episodes (Like "Jake Suit", "Frost & Fire" and "Too Old") He is actually suffering an HeroicBSOD since the end of "Jake the Dog" and he only seems to be [[StepfordSmiler handling it very well.]]

* [[KillEmAll Well]] [[CrapsaccharineWorld that's]] [[KnightTemplar pretty]] [[MoralEventHorizon depressing.]]

Finn's parents were rejected from the Land of Ooo for being humans and sent to the [[ILoveNuclearPower nuclear wasteland]] seen in the opening of the show. When Finn was born, they snuck out of the wasteland to the forest and left him there so he wouldn't be exposed to the radiation any longer... but it was [[YouAreTooLate too late.]] Due to being the child of someone who dwellled in radiation for years upon years, he was born with weird horns and noodly limbs.

One of Penn's unseen adventures after the pilot ended... poorly. However, Jake was able to escape with his NiceHat and get it to Princess Bubblegum, who manages to clone him. However, Princess Bubblegum also recognizes that he isn't ''exactly'' like Penn, and gave him a different name to reflect that - a small reminder that Finn ''isn't'' Penn, and to not begrudge him his differences. She's likely still working on some way to bring back the original; see also the Decorpsinator Serum...