1 - 20 of 82 Works in Merperson Sun (Five Nights at Freddy's)
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You have always been fascinated by marine life. Always. Of course your first job would be as a Caretaker for magnificent and exotic creatures that could have only been found in fairy tales. Except they're not.
Here, you find how horrible they have been treated, and you want to change that. Little do you know, your act of kindness rewards you with being the favorite of two leviathans...[Just slow updates cause I'm Hella busy. But I will finish this book!]
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Some short stories of Sun, Moon and Reader trying to return to somewhat normal lives after Sun and Moon got rescued from the poachers. (And maybe other things thrown in as well...)
(Lost And Found Family Oneshots!)
(Spoilers for the main story, so read that first if you don't want to be spoiled on anything!)
Series
- Part 2 of Lost And Found Family AU
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It was one thing to end up stranded on an alien ocean planet, light-years from earth. But, it was a completely different thing for there to be sentient fish people on said planet who could try and kill you if you so much as looked at them wrong. Maybe it was a blessing Yvette ended up with one of the friendliest of them to decide they were best friends. Though, the one outside her bedroom window at night keeps watching her with murderous intent. And is that a child with the even bigger fish person?
This'll be an interesting situation.
[Cross Posted onto Tumblr]
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- Part 1 of Y/N Multiverse
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Samson Rays had always lived a Normal Life in Whaleport. So what happens when unexpectedly and unexplainably he starts turning into a mermaid- merman? A lot. A lot happens.
Sam is searching for answers on what's happening to him and how to stop it while trying to keep his human life together and preventing anyone from finding out about his growing scaly secret. -
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Callisto "Moon" Waves, or simply Moon, has lived and average life until one night an unexpected encounter with the merfolk that swim near his hometown changes that. Between an unfamiliar body, uncovering his foggy past, and an uncertain future on the horizon, it feels like his old life is going belly up and Moon is struggling to go with the tide.
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Light of the Depths by xNoriDorix
Fandoms: Five Nights at Freddy's, Subnautica (Video Game)
01 Jan 2026
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It was supposed to be a normal expedition. You, one of the junior biologists, were there for a reason - the practice that you and others had to go through on the giant spaceship Aurora.
It would be all right, because a flight across the galaxy cannot threaten anything dangerous... or so you thought.
Thought, until the moment when the spaceship you were in, crashed. And you, were one of the lucky ones who managed to get into the lifepod... or were you not?
Now you are alone, on this planet-ocean: where there is only water, strange creatures, some celestial sirens and their buddies, and also... wait. Why these sirens are so smart (and beautiful)?
It seems that you, young biologist, will have to figure out all this alien fauna, but also the secrets that this planet hides.
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Dawn's WRITING PROMPTS by Dawn5555
Fandoms: FNAF, Mer fnaf, daycare animatronics - Fandom, FNAF AU ideas
13 Dec 2025
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a BUNCH of my writing prompts others are free to use for inspiration!
If you use one please tag me so I can see what you make, and maybe mention my prompt as being your inspiration?
Please don't steal these prompts and submit them as your own!
Thank you!!
I may also be writing these for my own use so keep an eye on my account for new AUs!
My discord is Firekiller2009
if you wanna chat or hang out ^^
feel free to use it for inspiration.
as usual, make sure to tag me, and mention my making the prompt idea. -
如何在外星生命的围追堵截中在外星求生 by Cybeleaf
Fandoms: Five Nights at Freddy's, Subnautica (Video Game)
25 Nov 2025
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当阿尔特拉把你指派前往极光号作为飞船上为数不多的医生之一时，你期望在银河系间空间中顺利地旅行以建立一个新的相门。毕竟在太空旅行方面，阿尔特拉是最棒的，对吗？并且作为一个享有名誉和天赋的年轻“医生”，你是一个非常宝贵的资产。
但是，不，相反的是极光号被攻击了，而你正争先恐后地进入一个逃生舱之中。
逃生舱降落在了一个未知的星球：4546B上，一种来自这个星球的奇怪细菌感染了你的系统并阻止你安全离开这个星球，你需要和时间赛跑，来寻找治疗这种细菌的方法。
现在，如果那两个从第一天起就一直和你玩的巨型利维坦种类的生物能决定它们到底是想把你作为食物还是想帮助你，你的工作或许会变得简单的多。 -
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Moon is a fierce, deep-ocean siren captured after a severe injury and taken to a human rehabilitation center. There, he clashes with Sun, a naive, cheerful siren raised in captivity who only speaks English. Moon views Sun with contempt as a "pet," focusing on his own recovery so he can return to the wild.
After his release, Moon is free, but the center is later robbed. Sun bravely frees the other animals but is easily overwhelmed by the real ocean's powerful currents and gets lost at sea. Driven by desperation and an unexpected bond, Moon rescues the exhausted Sun and returns him to the facility, reuniting him with his worried human mother, Dr. Sharma, and leaving the two sirens with a complex understanding of their vastly different worlds.!!!PLEASE READ DIS OF THE SERIES + THE TAGS OF THIS BOOK!!!
Series
- Part 2 of *READ DIS* || Made for my own entertainment
- Part 21 of OneShots
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A Mermay fic!
You weren’t sure how long it’d been. 10, 50, 100, 300 years? You had been in your submarine for as long as you could remember. 1732, your birth year. In love with the sea and the creatures it held. Your life’s purpose was to find these mermaid like creatures, with beautiful scales and bodies you could worship for 300 more years.
You had a partner, though his suit’s lain empty for years now. The ocean is ever expanding for you, updating maps, collecting loose rocks to camouflage your sub, yearning to find your missing pieces under the sea.
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Moon Lunesto has freshly moved oceans to escape his past, but he's still new to the customs of the Atlantic. New creatures share the water with him that he's never seen before, and adjusting is a struggle especially with new 'traditions'. But the poor mermaid is unaware of the dangers and falls right into a trap. All he can do now is hope he's not fish food.
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pseudo prodigy’s philter by froffersthegrog
Fandoms: Five Nights at Freddy's, The Sun and Moon Show (Web Series), Subnautica (Video Game)
30 Sep 2025
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So you’ve crash landed on an alien planet.
Step one is to gather your bearings.
Step two is to analyze your surroundings and see what’ll keep you alive.
Step three is to figure out what these weird mer-things are and why they’re so obsessed with you.
And step four is to wonder how you got to step four because you sure as hell don’t remember one, two, OR three.
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AKA, a rewrite/revision of my old fic “fishie buddies yayyyy”
Series
- Part 2 of froffer's beloved au rewrites <3
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Why are you smiling at me? by Lunar (The_Cosmic_Ocean), The_Cosmic_Ocean
Fandoms: Five Nights at Freddy's
08 Sep 2025
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Sun is a mer raised by humans, and Moon is a wild Siren.
Sirens are meant to kill. Not love.
But here Moon is starting to get feelings how will this turn out?---
Or i let BloodMoon write my summaries and this is what he writes: -
Drowning in Havoc by BloodMoon (The_Cosmic_Ocean), Lunar (The_Cosmic_Ocean), The_Cosmic_Ocean
Fandoms: Five Nights at Freddy's
06 Aug 2025
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~Moonies Turn~
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Rise Or Drown {Forbidden Lover Part 2} by Lunar (The_Cosmic_Ocean)
Fandoms: Five Nights at Freddy's
10 Jun 2025
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Yes, i said hair alot in this but it was because my auto correct was being stupid and changing it 'fins' to a different word yet didnt change hair.
Also Part 3 or not?
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- Part 7 of OneShots
- Part 2 of Forbidden Love
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Late for mer may i know Sigh.
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- Part 6 of OneShots
- Part 1 of Forbidden Love
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Two young mers get pulled from the sea.
Pain and abuse wait for them above the waves.
They must confide in each other in order to keep their heads, and hope that someone will come for them...
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- Part 1 of Lost And Found Family AU
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Welcome to Freddy Fazbear's Mega Water World, the premier aquarium in the world! Enjoy our state-of-the-art rides and attractions, our dazzling animal performances, and prepare to be amazed by the stars of our show: live mers!
You are a mer handler at the illustrious Mega Water World. Or, you were, until something happens to the mer in your care and FazCo buries it all under red tape. Driven by grief and guilt, you team up with a fellow handler to uncover and bring to light the company’s unethical practices surrounding the mysterious mers they keep on display. But what do you do when your search for the truth brings you face to face with two abandoned mers wasting away in the ruins of one of FazCo's old holding facilities? The mers are hurt and scared, but you are determined to make up for your past failure. You are going to take care of them, even if it kills you. And with two traumatized mers to contend with, it just might.
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A Step by Step Guide on Mermaid Courtship by foggystarrs
Fandoms: Five Nights at Freddy's
19 May 2025
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You find two merpeople stuck in a fisherman's net and decide to help free them.
You don't expect to see them again after that night, but it turns out that they have other plans. As you're suddenly being showered with gifts and shiny trinkets from the depths of the ocean, you start to wonder what you've gotten yourself into.
After all, you didn't expect the two mers to suddenly start courting you.
or basically, Mer! Sun & Moon try to romance the reader, but reader is as dense as a rock.
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- Part 1 of Mermaid Courtship
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Every MerMay.... I rise... From the dead.....
Okay, curtsey of the lovely Daycare Friend Pick Up discord server, I've got a nice line-up of prompts to either write or draw about, so I'll be trying my best to do so DURING finals and an international trip! :D
Sorry I've been so slow to update my main mer fic for those of you who've read it, I promise it's not being abandoned, I'm just very slow and all over the place.
I hope you enjoy a GOOD dose of the mer boys this May though! Expect art of them on my Tumbr (@cosmic-quakes) and hopefully TikTok (@cosmic_quake)!
Series
- Part 4 of MerMay2023-2024