It is found in many tribal societies around the world, in places such as Siberia, West Africa, North America, and Australia. Jesse Moynihan confirmed that Jake is a reincarnation of Shoko's tiger, and this was canonically affirmed in "Together Again."
Beth is very clearly a descendant of Jake the Dog and the pups he had with Lady Rainicorn (a rainbow/unicorn species that comes from the crystal dimension). Meanwhile, Shermy is a cat-like creature who some fans believe to be the reincarnation of Finn, but that's just a theory.
Finn then asks to be reincarnated, to which Mr. Fox agrees, while Jake decides to remain in the 50th dead world. However, Jake ends up changing his mind at the last minute and rushes to join Finn. They fist bump one final time, finding themselves together again.
Uncovering Finn's Secret Past Lives in Adventure Time
Who was Jake reincarnated as?
It is found in many tribal societies around the world, in places such as Siberia, West Africa, North America, and Australia. Jesse Moynihan confirmed that Jake is a reincarnation of Shoko's tiger, and this was canonically affirmed in "Together Again."
Shermy is confirmed to be a reincarnation of Finn, which makes sense considering their similarities and the fact that Finn can resurrect when he wants and be another living being due to being an incarnation of the Blue Catalyst Comet.
During Adventure Time, it was revealed that Finn and Jake were the same age, and the series ended when Finn was 17. Therefore, it would only make sense that Jake would pass away by the time Finn reached adulthood.
The Adventure Time: Distant Lands special "Together Again" takes place sometime after the end of the series, when Jake has died of old age. He then journeys through the Dead Worlds to be reunited with Finn, who is also deceased.
Both Shoko and Finn were abandoned by their parents when they were little. It is revealed that Finn's past lives were a catalyst comet, a butterfly, a glowing pink blob, and Shoko.
What happened to Finn and Jake after reincarnation?
In Distant Lands, we learn that Finn and Jake both die eventually, and after finding each other again in the Land of the Dead, they're reincarnated (as what, no one knows), presumably fated to go on more adventures together.
Jake has long passed away, and in his memory, Finn reminisces about the "Fionna & Cake" fanfiction Simon wrote as the Ice King due to them being Jake's favorite. It's implied that in order to cope with Jake's death, Finn distracts himself with adventures.
Finn's epiphany then becomes the realization that he has to go back; he has to be reincarnated as something else and try again, so that one day, he might reach the 50th deadworld via his own soul's righteousness and be reunited with Jake.
Shoko was under the employ of the Bath Boy Gang to steal Princess Bubblegum's amulet. But before she could steal it, she fell into a river of toxic waste and turned into the creature that Finn saw. She's able to crawl into Finn's future tree house before dying and eventually being reincarnated into Finn.
Other difficult lessons are handled in the relationships in Adventure Time, such as Finn's relationship with Flame Princess. I found this a particularly touching and important representation, as Finn actually ends up with no one at the end of the series.
Princess Bonnibel Bubblegum is the self-appointed princess of the Candy Kingdom. An biologically immortal being, she has served as the Land of Ooo's most dominant ruler and a science genius, having built her kingdom from the ground up with the help of her lab-made creations.
In the episode "Joshua and Margaret Adventures" it is shown that Jake is birthed from Joshua's head after being bitten by a shapeshifting demon. I believe this is the true origin of Jake's powers because he is able to shift shape and change form in the same way the blue shapeshifter does in this episode.
In season 6, Martin reveals to Finn that he was forced to abandon him as an infant after reaching a crossroads too dangerous for an infant and that he always meant to return for him. Adam Muto said that they did not want Finn to be a "carbon copy" of Martin since he had an adoptive father in Joshua.
Jake comes to the conclusion that people are used to his yellow color, so Lady Rainicorn uses her color altering ability to make Jake yellow again. After multiple failed attempts due to Jake's blue skin repeatedly returning, Jake tells Lady that he appreciates the effort.
Finn was, for a long time, the only confirmed human in the Land of Ooo, to the point where he had an epithet, "The Human", and was referred to by many as "Finn the Human". The reason for this is revealed in the episode "Her Parents," as Lady Rainicorn's dad believed that humans were extinct.
Finn may be the last human in the Land of Ooo, or possibly the world. In the episode "Her Parents," Lady Rainicorn's dad says he thought humans were extinct. This lends new significance to his title "Finn the Human," as his humanity may be unique in Ooo.
Also like Finn, Shoko had an animal partner, except it was a normal white tiger instead of a magical dog. The tiger was stated offscreen by Jesse Moynihan to be a past life of Jake.
Finn is eager to help until Slime Princess says that she needs Finn to marry her or else she will lose the Slime Kingdom. Finn states that he is unable to do so, and Ice King interrupts and volunteers himself as husband before Jake tells him off.
