Fionnathehuman Stories

Finn left the land of ooo for four years to explore the post apocalyptic world without jake; But when he gets back he has newfound feelings for his best friend marcelin...

The Ice Queen, ruler of the ice kingdom, has been known to be a rather crazy yet powerful individual. But more importantly... lonely. So lonely in fact, that she resorts...

✴ The title explains it all, one shots about Simon!! I can do requests too but most of them are going to be things that I come up with on my own! (Simon Petrikov x read...

Accidentally (?) turned into a vampire, the reader has had no choice but to adapt to Marshall Lee's lifestyle. But his lifestyle had taken an abrupt turn into that of so...

Prince Gumball x Reader. No more to be said. I maaay have a tiny weeny huge crush on Prince Gumball. Ok, make that a ginormous crush. He's so cute!

When a bubbly prince falls in love with a dangerous vampire king he'll finally find out that love really does BITE. (GUMLEE/MARBALL)

Husband (Y/n) X Pregnant Wife Ice Queen (Y/n) knew that when ever Ice Queen is defeated by Fionna and Cake She comes back and kidnaps again. again and again and again an...

When Princess Y/N is scheduled to go to the Candy Kingdom for a royal dinner, she meets Marshall Lee the vampire king and Prince Gumball of the Candy kingdom. She was on...

☆ In the Land of Ooo, Simon Petrikov seeks to heal from the loss of Betty. With the reader's support and understanding, they share a heartfelt conversation, leading Simo...

In the land of OOO, there tells a tale of Three hero's that help take down evil and fight Monsters and all that sort of junk. These heroes are. Fionna the human: one of...

Now with their world being real and having some magic. Fionna and Cake embark on their greatest adventure ever SPACE!

It's a sunny day in the land of Ooo, and you and your robotic friend, Roberto, are going to meet two folks that will change your lives. Like halfway through the story I...

One shots of Fionna the human and her various soulmates and scenarios they get into. I don't own adventure time.

When Fionna The Human finds herself falling head over heels for Aaa's number one bad boy, Marshall Lee, the Vampire King, Will she be able to keep her hero heart noble...

Disclaimers: I don't own Adventure Time from Cartoon Network , Marshall Lee , Fionna, Cake, Prince Bubblegum and his subjects. My OCs belong to me. When, a musical lesso...

Fionna gets amnesia when battling Ice Queen. She doesn't remember who she is, who her friends are, or who she's supposed to like... she's 16, and she was dating Prince G...

My first Mashall Lee × Marceline story. I got the idea from an RP I was doing on Facebook and it seemed interesting. I'm just giving this a shot so I would love to hear...

Life as an adventurer has its ups and downs. You save princes and make sure nothing is harming your world. You fight monsters or the Ice Queen with your bestfriend. O...

A little smut, mostly just fluff though, Don't be mad I have never writing smut so I might not know what its like.