The Amphibia AU Collection
A collection of Amphibia AUs created by the community!
(Open, Unmoderated)
Recent works
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Mystery Work
Summary
This is part of an ongoing challenge and will be revealed soon!
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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?
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Marcy is being held captive by king andrias as a test subject, and Anne and Sasha set out to save her.
https://discord.gg/uP9fNqUq2V
^ if you’re enjoying the fic here’s the discord server for it :D!
Recent bookmarks
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Summary
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!! -
Forces Between Worlds by Mandalore_the_Atreides
Fandoms: Star Wars - All Media Types, Star Wars: The Clone Wars (2008) - All Media Types, Gravity Falls, Amphibia (Cartoon), The Owl House (Cartoon)
04 Feb 2026
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The Force works in mysterious ways. A hero from the Old Republic has brought together heroes from Gravity Falls, Amphibia, the Boiling Isles, and the Galactic Republic to watch their pasts and the future of the galaxy far, far away so that they may prevent it and save all their worlds from certain peril.
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Overall Synopsis: The trio are gifted magical powers due to their connection to the calamity stones which affect their daily lives in Amphibia.
Episode 1: Alone In My Garden- Upon arriving to Amphibia, Anne finds herself growing magical flowers from her head due to her connection to her calamity stone. Now she turns to Marcy for help in hopes of better understanding her side effects, and possibly get rid of them.
Episode 2- Toadstool Follies: After the trio is finally together again, they venture outside of Wartwood to find an ingredient for a potion Marcy's making. However, tensions rise between Sasha and Anne.