The Amphibia AU Collection
A collection of Amphibia AUs created by the community!
(Open, Unmoderated)
Recent works
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Summary
The Amphibian Trinity is an Amphibia fanfiction written by BrutalityInc of Codex Equus fame. This fic is a 'Fusion Fic' AU with the The DCU.
The peaceful existence of Amphibia is dramatically disrupted by the arrival of three strange visitors from Earth. While seemingly ordinary-looking Human teenage girls on the outside, they soon reveal all three are not entirely who and what they seem, each possessing natures and secrets beyond anything Amphibia has ever known.
As Amphibia grapples with the existence of beings with power to change worlds and whose mere presence threaten to completely upend the status quo, the three arrivals will also have to grapple with how their true existence change the world around them and everything they had previously known as tensions rise, plans failed and prophecies are derailed, for both good and ill...
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Mystery Work
Summary
This is part of an ongoing challenge and will be revealed soon!
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Summary
It’s the new semester for Saint James Middle School. A student shows up again.
Short story after the end, Mostly at how the characters face their lives in the present.Series
- Part 1 of The Missing Girl
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I wanna KMS I MADE THIS AT 3 AM BRO AND THEM SAW A RACCON ANYWAYS (anne is basically depressed and has rlly bad insomnia and ya)
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Rest, my love (Or fall asleep, idk) by NUMBER1_YURI_FANS for KOKICHINOLIE
Fandoms: Amphibia (Cartoon)
03 May 2023
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When Marcy comes down with a horrible case of strep throat, it's up to her amazing wifes to help! But how can they help when all their wife wants to do is work?
Recent bookmarks
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Waking up in the middle of an abandoned building, tied up with the love of your life, waiting to be sacrificed to an All Powerfull Deity, was a bleak and hopeless scenario to anyone.
To Marcy, it was saturday night.
And if this circus of a cult think they can get away with killing her and Sasha in the Deity's name...
Well, let's just say that being married to a God has its up and down.
Series
- Part 2 of God is an Herpetologist
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When Marcy doesn't wake up the next morning after battling the Core, Anne vows to go to any lengths to help her.
Even if it means delving into Marcy's mind.
For Marcanne Week 2024, Day 1: Bug Hunt
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Marcy Wu wasn’t afraid of much.
Giant ants? No problem.
A live, very public performance, despite not having touched her drum kit in months? Not even a blink.
Three giant, cursed pollywogs who took actual magic to get them back to their original size? That was actually pretty fun!
But there was one fear she had always kept secret. One her friends only discovered when it got them trapped in that strange, wonderful, terrible fantasy world. Goodbyes.
When they came back from Amphibia, it had been everything she feared: tearful farewells, unsustainable promises to keep in touch, fear and anxiety building in her chest as she walked away…
But, as it turned out, it was completely unnecessary. While Marcy had been away, her dad had gotten a promotion, a last-ditch attempt by his employer to keep him there, so her family would actually be staying right here, in Los Angeles.
Now, four years later, with the social event of the year just around the corner, her two best friends want to set her up on a date. The only problem? Anne doesn’t realize that the person Marcy wants to ask out… the one she’s always wanted… is her.
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All My Friends Are Online by Cake_Is_Cool
Fandoms: Gravity Falls, Infinity Train (Cartoon), Amphibia (Cartoon), Tales of Arcadia (Cartoons), Star vs. the Forces of Evil, Danny Phantom
10 Dec 2025
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Mabel is having the time of her life writing fanfic. She loves all her commenters (especially her returning ones) but then things . . . spiral. Suddenly she's friends with a bunch of people who have stories as insane as hers and they're making new stories as well!
. . . Hopefully these ones aren't as traumatic as what they've already been through.
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an Afterlife with the Three I have always Loved by Gl0rys_w0rld
Fandoms: Amphibia (Cartoon)
19 Feb 2026
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Anne has died, taken up the the role of Guardian, and waited five years for Sasha and Marcy to pass so she can see her lovers, her best friends again. but she has long been doubting whether they will choose to stay with her; is she enough?
(spoilers, she's definitely enough. i love you calamity trio)
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“Anne, we didn't get married and tie our lives to you just to skip out on you in death. To hell with death do us part, afterlife do us closer!!” Sasha said seriously, taking Anne's shoulders and looking deep into her eyes.
“The prophecy was all three of us, not one. Three gems, three of us. We are the calamity trio!” Marcy insisted.~~
Calamity trio oneshot because you cant convince me this doesnt happen in canon. probably differently though. outcome the same!!