16 Works in Pre-Ooo (Adventure Time)
Listing Works
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Apocalypse Wow by Infinity_Pain
Fandoms: Adventure Time (Cartoon 2010), Adventure Time: Fionna and Cake (Cartoon 2023)
07 Sep 2025
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Betty Grof and Simon Petrikov are thrilled to get married and continue their academic careers. And then the world ends. Now, armed with only what they can carry, they must fight to protect their adopted daughter, and discover a way to survive and thrive in a world which is no longer made for them.
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What Survives the Singularity is Love by helles_belle
Fandoms: Arcane: League of Legends (Cartoon 2021), Adventure Time (Cartoon 2010)
19 Jun 2025
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A thousand years ago, they built a city together.
Viktor and Jayce: scientists, dreamers, almost-lovers. They designed Automnion as a haven after the world fell, a sanctuary of logic and light where no one had to die young. But when raiders breached the city walls and Viktor was gravely wounded, Jayce broke their last promise. He hexcorized Viktor to save him, binding soul to circuitry, man to machine. In doing so, he unleashed something ancient and irreversible. The Lichcore was born.
Viktor left. When he returned, the city still stood... but Jayce was gone.
Now, centuries later, Automnion sings with ghost-code and corrupted lullabies. Automatons quote lost poetry. The defenses tremble. Viktor, more machine than man, keeps the systems running and waits in the silence for a presence he can no longer name without pain.
Somewhere beyond the wasteland, something stirs. A storm-wrapped figure with a hammer that rings like a funeral bell. A crownless king who does not know if he’s searching for a city or for someone he loved before he went mad.
However, the circuits of Automnion remember...
And they cry for their king's return. -
marcy's DIY second lobe piercing (spoiler alert: simon freaks out) by lilacmuffins
Fandoms: Adventure Time (Cartoon 2010)
03 Jun 2024
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a young marceline finds a cute pair of earrings in the old abandoned motel that her and her guardian are staying at, so the only logical choice is to steal one of his sewing needles to give herself a second lobe piercing. hambo is very good at supporting her through this.
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In another universe by Anonymous
Fandoms: Adventure Time: Fionna and Cake (Cartoon 2023), Adventure Time (Cartoon 2010)
09 Feb 2024
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Simon and Marcy find an abandoned restaurant. Simon has some thoughts about the crown.
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He promised her that they would be together forever, because it was just her and him against the world, and that was how it was always supposed to be, but then things got so much more complicated, and he slipped away from her... right through her fingers. But she was going to get him back.
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“I like you.” Marceline promised in a sad voice, and the worst part was that the blinding white hair and the pail skin made him almost resemble Simon. Like somewhere down there she could still see the man who had fathered her in the end of the world when both of her parents had left her. It was like a taunt.
“You do?” He exclaimed in a shocked yet delighted voice, and she saw the twitch of delight in his frosty white irises. She could see her own reflection in his pupils. They were Simon's eyes, but the warmth and the love that had been in his eyes when he looked at her was now gone. And it was just replaced with the Ice King.
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I know the world’s a broken bone, but melt your headaches, call it home by alexisntedgy
Fandoms: Adventure Time
11 May 2020
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What a bizarre world it is for a seven year old girl and a fourty-seven year old man.
A place for me to dump all my marcy and Simon feels
Title from p!atd’s Northern Downpour, a song I have long associated with Simon and marceline
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Simon teaches Marceline how to make Pancakes.
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Chowder exciting made for Japan only crossover episode by JackFloweyDan
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, Chowder (Cartoon)
03 Jul 2018
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Chowder and his friends go to UA and meet friends with Izu, but once the evil Emperor Jean comes up, we must do something to stop him in this Japanese episode
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"Words are a pretext. It is the inner bond that draws one person to another, not words."
--RumiInspired by a bit from the "I Remember You" storyboard, which said of Simon and Marcy: "They know each other." It also said "he left her alone for some reason," but I'm choosing to ignore what that's about for the moment and focus on one of a few headcanons I have about how they might have "known each other" before the bomb(s?) dropped.
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It's the end of the world, and Russia's among those struggling to survive. Meanwhile, Simon's fighting off insanity and loneliness. //EDIT: Don't see myself finishing his, sorry. Thank you for your support, everyone who's read this in the past years.
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The epilogue to "The Unsung."
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In which the reader learns of the woman who birthed a vampire queen to be, even though her own daughter may never learn of her tale.
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Simon's plan to hand Marceline off to her demon father and abscond before he goes completely off the deep end backfires when they invite him to live with them in the Nightosphere.
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The Ice King is a bumbling, if not likeable, villain of Ooo. But he wasn't always like this. The crazy old man was once a studier of antiques named Simon Petrikov. It was through a long, terrible, and unfortunate series of events that he has become the shell of a man he is today. And this? This is a record of those events.
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After the Mushroom War, the world was mostly magic. But it wasn't all sweet and shiny just yet.