Adventure Time x Human! Female! Twin Sister! Oc Insert
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  • Reads 4,325
  • Votes 100
  • Parts 4
  • Time 48m
  • Reads 4,325
  • Votes 100
  • Parts 4
  • Time 48m
rainbowcart0405
Ongoing, First published Mar 17, 2020
actionadventureadventuretimeadventuretimexocinsertcartoonnetworkfantasyfemaleocfinnthehumanhumorjakethedogxocinsert
Go on amazing and crazy adventures all around the Land of Ooo, with Finn the Human, Jake the Dog, and Finn's twin sister, Venus the Human. Throughout the series, the trio go and interact with major characters, including: Princess Bubblegum, the sovereign of the Candy Kingdom and a sentient piece of gum. 

The Ice King, a menacing but largely misunderstood ice wizard. Marceline the Vampire Queen, a thousand-year-old vampire and rock music enthusiast. 

Lumpy Space Princess, a melodramatic and immature princess made out of "lumps". BMO, a sentient video game console-shaped robot that lives with Finn and Jake. 

And lastly, Flame Prince, a flame elemental and ruler of the Fire Kingdom, who is Venus's love interest. How will all these journeys turn out?

You must read the book to find out!

{I don't own Adventure Time or it's characters. Only my Oc character. All rights go to creator(s).}
All Rights Reserved
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Table of contents

4 parts

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High-Grade Red by ComXDude
10 parts Complete
With the defeat of the vampires, Marceline and Bubblegum seem to be as close as ever. But what happens when a sudden bolt of lightning brings the Vampire Queen as close to death as she can get? How does the princess react to her best friend once more in a comatose state, so soon after the last time? And what chain of events does this spark?
When the Sugar Met the Flame [Leo x Blake] (Sequel to My Sweet Prince) by Thatonefnaflover
52 parts Complete Mature
*SEQUEL TO "My Sweet Prince."* *Written in third person* ( [Adventure Time gender-swap] Leo is the child of Gumball and Marshall Lee. Blake is the child of Finn and Flame Prince. ) When Leonardo was a boy he was exploring the woods with his father, Marshall Lee. A game of hide and seek led to Leo finding a new friend. They became close rather quickly. Once they became teenagers a romance started to bloom. By now Gumball is king of the Candy kingdom and has abolished the rule against same-sex relationships. However, to keep Leo safe he passes the rule for royals that prohibits romantic relationships under the age of eighteen. What happens when Leo's parents find out that he is in love with Blake? What do they do when they discover that Leo's feelings are mutual?
Might Solve a Mystery, or Rewrite Hist'ry! by avatarhay
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Book One!! Update: THE WHOLE SERIES IS NOW COMPLETED! It includes all 3 seasons across 4 (and counting) books! Enjoy! 😊 I fell into the world of Ducktales? By the time the shock settled in I had already been "adopted" into the Duck's family due to Scrooge's love of mysteries. Little does he know I'm holding the key to several. Dealing with Magica is proving exhausting. She keeps threatening to never send me home. However, that's fine by me; I like it here. Let's do all the adventuring! Although when she finds that out she might be more than willing to send me home. That's where I'll draw the line! But for now let's have fun! Main Relationship: ScroogexReader (but that's not the main plot also sloooooooow burn) Human!Reader TV-PG 13 Now on AO3!! A/n: I messed with the time line and Magica's power a little. There's a mixture of episodes and nonepisodes!! Enjoy! Also I could figure out the age in the begin but I'd say about 19-21. Disclaimer: Disney owns Ducktales because you know your girl would be confirming all the head canons and doing all the ships!
Pizza Dates And Plastic Plates [BUBBLINE] by abadeerly
15 parts Complete
Marceline has a pretty messed up past, an even messed up present and probably a messed up future already laid out for her. But maybe getting partnered up with a popular rich kid is all it takes to change her future. Especially when her past comes to bite her in the ass. REWRITING THE ENTIRE STORY PLEASE BEAR WITH ME. FIRST CHAPTER HAS BEEN UPDATED.
marshall lee x reader (Bad Blood Sweet taste)!!!!COMPLETED!!! by spacelover02
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He is a playboy and July knows that but she can't stop the feelings that are blooming in her chest. She travvles back to Aaa and meets up with old friends. The vampire King and the Prince of the candykimgdom both fall for her. Then troubble comes one night when she sees a blue odd light. Old enemies come back, shocking thruths are being discovered. Will Marshall be able to prove to July how much he loves her before it's to late. Well read to find out! *********DISCLAIMER******** * I DO NOT OWN THE SHOW ADVENTURE TIME * I DO NOT OWN ANY PICTURES *********WARNING********** * READ AT YOUR OWN RISK * MATURE CONTENT * VIOLENT
The Celestial Hero - Finn The Human x Danmachi by Drunken_Crow
18 parts Ongoing Mature
The hero of Ooo, known by all and admired and feared by many. Also known as Finn The Human, being supposedly the last of his kin goes onto adventures around the world of Ooo and dive in dungeon, kick ass and save princess while having romantical issue. Over time the hero grew old in a more advance and peaceful Ooo with beings such as the Lich being defeated many years ago and all fell in a era of peace. Such a peaceful world was not fit for a man like Finn, not anymore and so! Finn would be reincarnated once he finally met his end and ended up in a new place, a new home to where in due time, will call his own...
What Was Missing by MrMertins
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This is a Finnceline story. I've found a new love for the ship as of late and i wanted to take a shot at writing a story! This takes place after the Great Gum War, after the events of Obsidian. PB and Marceline end up going their separate ways and Marceline ends up living back in her cave alone. I won't spoil anything else ;) Note I do not own any of these characters or places, they are all owned by Cartoon Network, this is simply a fanfiction.
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Incarnations of Evil Incarnations of Good But what about the In Between? (I Do Not Own Any Adventure Time Property and All Rights Go to Cartoon Network and Affiliates)
Too Late For Rescue (Finn x Reader) {Sequel} by SquishySmithIII
14 parts Complete
You, Y/N, couldn't be happier in your entire life. The love of your life is fighting with you side by side and helping keep others safe and out of danger. His kindness extends to the far reaches of Ooo for you and he has made it very evident that he would do anything if it meant keeping you safe. You undoubtedly express the same feelings towards him on the battle field and especially off of it, taking great care of him and his comrades whenever they get hurt or are just in need of a friend. Soon, however, Finn starts leaving the tree house more frequently and he becomes a little distant. You don't take it too personally, but his ghosting mood starts to become a common thing in your relationship, and your suspicions arise. He'll leave late at night and come back the next day when it's almost dawn, covered in bruises or even still bleeding. He tells you it's fine, plugging in excuses for his behavior, until one night in the woods you find him with another girl. You had never been on quite steady terms with most wizards, but this one had to be the worst. The two of you have dark history and with Finn now getting in the mix without his understanding makes him a dangerous advantage to her. If this "training" keeps up with him coming home with more injuries then you will have to stop them. What if this girl doesn't stop? What if she keeps going until she kills him? What if she kills him to get to you? You can't risk your hero getting hurt by one of your own enemies. Once upon a time he lost you when you were too far from reach; you aren't going to lose him now when he's this close. If she wants to play tug of war with Finn then you'll entertain her. But the last thing you will do is allow him to be on the wrong side of wizardry. Because as far as your concerned, you're in the right. Warning: swearing The cover was made using Wattpad Covers and the picture belongs to Matialonsorphoto.
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22 parts Complete
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Slide 1 of 10
High-Grade Red cover
When the Sugar Met the Flame [Leo x Blake] (Sequel to My Sweet Prince) cover
Might Solve a Mystery, or Rewrite Hist'ry! cover
Pizza Dates And Plastic Plates [BUBBLINE] cover
marshall lee x reader (Bad Blood Sweet taste)!!!!COMPLETED!!! cover
The Celestial Hero - Finn The Human x Danmachi cover
What Was Missing cover
The Grey Area || Adventure Time || cover
Too Late For Rescue (Finn x Reader) {Sequel} cover
Adventure time fanfic: Ooo's new Prince cover

High-Grade Red

10 parts Complete

With the defeat of the vampires, Marceline and Bubblegum seem to be as close as ever. But what happens when a sudden bolt of lightning brings the Vampire Queen as close to death as she can get? How does the princess react to her best friend once more in a comatose state, so soon after the last time? And what chain of events does this spark?

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