Fionnathehuman Stories

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

set in the world of fionna world when you wake up to the same thing every day, maybe you just gotta change things and start questioning things. Join Calvin as he makes h...

Fionna starts to get feelings for someone she just meet which is the one and only handsome Marshall Lee which is the Vampire king. Marshall Lee the Vampire king starts t...

"𝐦𝐲 𝐮𝐧𝐝𝐲𝐢𝐧𝐠 𝐥𝐨𝐯𝐞, 𝐧𝐨𝐰 𝐈 𝐡𝐨𝐥𝐝 𝐢𝐭 𝐥𝐢𝐤𝐞 𝐚 𝐠𝐫𝐮𝐝𝐠𝐞." "𝐚𝐧𝐝 𝐢 𝐡𝐞𝐚𝐫 𝐲𝐨𝐮𝐫 𝐯𝐨𝐢𝐜𝐞 𝐞𝐯𝐞𝐫𝐲 𝐭𝐢𝐦𝐞 𝐭𝐡𝐚𝐭 𝐢...

[𝙉𝙖𝙢𝙚] [𝙇𝙖𝙨𝙩 𝙣𝙖𝙢𝙚] 𝙒𝙖𝙨 𝙟𝙪𝙨𝙩 𝙣𝙤𝙩𝙝𝙞𝙣𝙜 𝙗𝙪𝙩 𝙖 𝙝𝙪𝙢𝙗𝙡𝙚 𝙁𝙧𝙖𝙣𝙠𝙞𝙣𝙨𝙩𝙞𝙣𝙚 𝙬𝙖𝙣𝙙𝙚𝙧𝙞𝙣𝙜 𝙩𝙝𝙚𝙞𝙧 𝙙𝙚𝙨𝙤𝙡𝙖𝙩𝙚 𝙡@𝙣𝙙 𝙪𝙣...

Adventure time fanfic I guess! They did winter king dirty by only giving him one episode >:( maybe they'll give more in future but for now I'll write my own story on...

Things are tense in the hot, wasteland dimension. Tempers are high, and Fionna is overwhelmed with guilt after being screamed at by a furious Cake. Simon takes matters i...

Short little gumlee stories !! WARNING !!! There are some sexual scenes if you are not comfortably with that if don't read it and if there are any sexual scenes in the...

✴ 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...

Fionna is still weirded out by the fact her whole word resides in some dude's head. She decides to investigate and makes a new discovery, for both herself and Simon.

☆ 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...

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

(may be a GumLee oneshot fic IDK)

So the characters stick to the way they are in adventure time. Just here Gumball is a big shot social media influencer and Marshall Lee is some kind of activist/musician...

~Warning; This book will contain abuse, abuse in a relationship, Sexual Assult, minor cutting, cheating, and being used. Also cussing. Their are things I might not have...

Prince Gumball finally gets a break from royal duties and chooses to spend it with Fionna, although he finds that a certain somebody was invited without his knowledge. (...

Prince Gumball and Marshall Lee the Vampire King both attempt to win over Fionna's attention while Marshall irritates Gumball to his breaking point. But Fionna and Cake...

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...

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...

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...