Fionnathehuman Stories

109 Stories

Bravest Warriors meet Fionna and Cake by BiancaGradaille
Bravest Warriors meet Fionna and C...by BlackGrose
Now with their world being real and having some magic. Fionna and Cake embark on their greatest adventure ever SPACE!
The Wolf & The Rabbit by SweaterPower
The Wolf & The Rabbitby Script
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...
Do I have feelings for a Vampire? (Fiolee) by gentlejiminie
Do I have feelings for a Vampire...by gentlejiminie
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...
𝐭𝐡𝐞 𝐠𝐫𝐮𝐝𝐠𝐞-||-𝐚𝐝𝐯𝐞𝐧𝐭𝐮𝐫𝐞 𝐭𝐢𝐦𝐞/𝐟𝐢𝐨𝐧𝐧𝐚 𝐚𝐧𝐝 𝐜𝐚𝐤𝐞 by Silver_Star-
𝐭𝐡𝐞 𝐠𝐫𝐮𝐝𝐠𝐞-||-𝐚𝐝𝐯𝐞𝐧�...by ‎✮𝓥𝓪𝓵𝓮𝓻𝓲𝓮~<3✮
"𝐦𝐲 𝐮𝐧𝐝𝐲𝐢𝐧𝐠 𝐥𝐨𝐯𝐞, 𝐧𝐨𝐰 𝐈 𝐡𝐨𝐥𝐝 𝐢𝐭 𝐥𝐢𝐤𝐞 𝐚 𝐠𝐫𝐮𝐝𝐠𝐞." "𝐚𝐧𝐝 𝐢 𝐡𝐞𝐚𝐫 𝐲𝐨𝐮𝐫 𝐯𝐨𝐢𝐜𝐞 𝐞𝐯𝐞𝐫𝐲 𝐭𝐢𝐦𝐞 𝐭𝐡𝐚𝐭 𝐢...
𝙄𝙣𝙩𝙚𝙧-𝙙𝙞𝙢𝙚𝙣𝙨𝙞𝙤𝙣𝙖𝙡?...[𝙁𝙞𝙤𝙣𝙣𝙖 𝙖𝙣𝙙 𝙘𝙖𝙠𝙚 × 𝙧𝙚𝙖𝙙er] by dumbsydoddles
𝙄𝙣𝙩𝙚𝙧-𝙙𝙞𝙢𝙚𝙣𝙨𝙞𝙤𝙣𝙖𝙡...by MARSH
[𝙉𝙖𝙢𝙚] [𝙇𝙖𝙨𝙩 𝙣𝙖𝙢𝙚] 𝙒𝙖𝙨 𝙟𝙪𝙨𝙩 𝙣𝙤𝙩𝙝𝙞𝙣𝙜 𝙗𝙪𝙩 𝙖 𝙝𝙪𝙢𝙗𝙡𝙚 𝙁𝙧𝙖𝙣𝙠𝙞𝙣𝙨𝙩𝙞𝙣𝙚 𝙬𝙖𝙣𝙙𝙚𝙧𝙞𝙣𝙜 𝙩𝙝𝙚𝙞𝙧 𝙙𝙚𝙨𝙤𝙡𝙖𝙩𝙚 𝙡@𝙣𝙙 𝙪𝙣...
War Of The Winter King by thesillyuser3857
War Of The Winter Kingby thesillyuser3857
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...
You're Not Stupid - A Fionna and Cake Fanfiction by Baskerville1111
You're Not Stupid - A Fionna and C...by
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...
GumLee Mini stories by GaryxMarshalLee
GumLee Mini storiesby ✮
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...
𝐒𝐈𝐌𝐎𝐍 𝐏𝐄𝐓𝐑𝐈𝐊𝐎𝐕 | One-shots ★ by mayluvwz
𝐒𝐈𝐌𝐎𝐍 𝐏𝐄𝐓𝐑𝐈𝐊𝐎𝐕 | One...by 𝑀𝑎𝑦
✴ 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...
Blue Halo by amazingmsme
Blue Haloby amazingmsme
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.
𝗛𝗘𝗔𝗥𝗧𝗦 𝗨𝗡𝗩𝗘𝗜𝗟𝗘𝗗 | A Simon Petrikov One-Shot  by mayluvwz
𝗛𝗘𝗔𝗥𝗧𝗦 𝗨𝗡𝗩𝗘𝗜𝗟𝗘𝗗 | A...by 𝑀𝑎𝑦
☆ 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...
Fionna the human's soulmates by FanGirl18293
Fionna the human's soulmatesby Dorothy Rogers
One shots of Fionna the human and her various soulmates and scenarios they get into. I don't own adventure time.
Sugar Coated Words by Twizted205
Sugar Coated Wordsby Twizted205
(may be a GumLee oneshot fic IDK)
Different Frequency (GumLee) by Twizted205
Different Frequency (GumLee)by Twizted205
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...
Marshall Lee and Fionna; How it all started by Brightheart_Swiftpaw
Marshall Lee and Fionna; How it al...by Maya McNett
~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...
The Vampire, The Prince and The Wayward Cave by Lunaveils
The Vampire, The Prince and The Wa...by Lunaveils
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. (...
Completed
Sugar Free by Lunaveils
Sugar Freeby Lunaveils
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...
Time For Adventure! by KevinGarcia840
Time For Adventure!by Kingbroly314
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...
Adventure Time: I Wasn't Kidnapped (Short Story) [Story idea Adoption] by Donuocat
Adventure Time: I Wasn't Kidnapped...by Donutcat
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...
Queen of Ice meets King of Stone. by ReptileEdge
Queen of Ice meets King of Stone.by ReptileEdge
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...