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Frisk Gets Adopted By A Skeleton (UnderAdoption/AdoptionTale) by Cat_On_A_Keyboard, CheerfulForest
Fandoms: Undertale (Video Game)
15 Nov 2025
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Summary
Sans lives alone with his baby brother in an old house on the outskirts of New Home. He raises him to the best of his abilities. One day, he hears the doorbell ring. He opens it and finds an abandoned child. A human child. He has no idea how they got there. The only thing left with the child was a note. Sans reads the note and learns the orphan's name. Frisk.
Series
- Part 1 of Frisk Raised In The Underground
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A Jaded Emerald by KTamao205
Fandoms: Harry Potter - J. K. Rowling, Undertale (Video Game)
06 Nov 2025
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Summary
Abandoned on Mt. Ebott at the tender age of five, young Harry's unsurprisingly died, but Death's always had a weird relationship with his variant... Meanwhile, before Flowey's revival as souless talking flower, Sans makes a discovery under the mound of snow, Papyrus has always wanted to be a big brother anyways.
*Edited Summary (29/09/2025)
Series
- Part 1 of MultiTaleVerse
- Part 1 of Arcalith
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Summary
He was a bad brother. He knew that. He didn’t need all of this shit to happen for him to acknowledge that.
...Whatever it is that’s happening at this point.
Or
Papyrus made a stupid mistake and now sans is gone.
[THIS WILL BE REMADE]
Series
- Part 1 of MeryFell
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Summary
Papyrus hadn't been worried! ...Well. Maybe he had been, just a bit.
It'd been a while since anyone had heard from the human, so he called to check on them. But when a conversation revealed just how young they were, he realized things had to change. They were all on their own down here. And... They had nowhere to go.
Well! If there was no one else to take care of the baby bones, Papyrus would just have to do it himself!
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Sans was trying to get through life and ignore the apathy that had settled over him for Papyrus’s sake. It was just so hard to care about anything when he knew none of it mattered. But when Papyrus had him bring the anomaly home like a lost puppy, things stopped adding up.
How could such a sweet kid be responsible for the relentless time loops?
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Frisk was used to being on their own, and they were pretty good at taking care of themself. But—Well. ...Dying hurt. They just wanted to get back to the surface! With Undyne in the way, they were hopeless.
So when a phone call from Papyrus somehow ended with an offer for them to crash at his house, Frisk could only be relieved for the break.
They could afford to rest for a while, right?
Series
- Part 4 of Finding Home
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Another Child Lost to the Mountain (Building a New Future, With You By My Side) by LizaVet
Fandoms: Undertale (Video Game)
15 Sep 2025
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Summary
Frisk could feel Chara narrowing their eyes at them. "Seriously, can you please take that stupid bandanna off your head?" Chara sneered. "It makes you look ridicul-"
"Mandanna," Frisk interrupted.
“…excuse me?”
"Mandanna. Not bandana."
”Are we seriously gendering the bandanna just because it has abs on it?”
"Yup!"
”…I really wish that others were able to hear your sass.”
"I don’t know, I kinda like the idea that you’re the only one getting to see this side of me." Frisk looked in the window of a house they were passing by, winking at their reflection in it. "Makes you special, doesn’t it?"
”I- Stop flirting with me. I’m a dead person’s voice in your head!”
"No."
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A child falls into the Underground and discovers a world beyond their imagination. Between the monsters, the magic, and the power to undo their mistakes and make everything right, they find happiness in places they would have never imagined. But when things start to get difficult, will they have the strength they need to keep fighting? How much pain are they willing to suffer to make things right? How much are they willing to give up to reach their happy ending?Series
- Part 1 of ACLM
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Sans turned to Papyrus. "you..sure you want to do this Pap? We can always send them with Undyne and Alphys-"
"YES, OF COURSE! FRISK IS MY FRIEND AND WILL NEED TO BE LOOKED AFTER IN THEIR SICKLY CONDITION. I AM THEIR BIG BROTHER AFTER ALL, IT'S MY DUTY TO PROTECT!" Papyrus frowns as Sans glances away. "YOU..DONT THINK I CAN DO IT?"
Sans' eye sockets widened. "no that's not it, bro. It's just..."
"Just..what?"
OR
Papyrus wants to prove he can be a good big brother to Frisk! How hard can it be to take care of a 5 year old human?
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Gaster signs his son up for petty summer classes at the labs, but his son has better plans. Running around in restricted zones, finding things he shouldn't ....or someone.
WIP (I ACCIDENTALLY PUBLISHED A DRAFT)
Series
- Part 1 of R3written: Alternate Outcomes
- Part 1 of Pain Given Form [Series]
- Language:
- English
- Words:
- 57
- Chapters:
- 1/?
- Kudos:
- 3
- Hits:
- 116
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Summary
Frisk is safe now. Their brothers have seen the worst of them, and love them still. They won't be hurt anymore.
But a mind that's bent on blaming itself will continue to doubt its worthiness of that love, and sometimes, those doubts push themself back to the forefront. When a memory leaves Frisk rattled, they're convinced that their brothers couldn't possibly want them in spite of it. Even Chara, who knows almost everything about them, would be disgusted. Frisk would much rather keep it hidden as much as possible.
But if Frisk has learned anything over the past month, it's that their family will always surprise them by how much they love them.
Takes place two weeks after chapter 25 of "To Repay Your Love."
Series
- Part 3 of The Love You've Always Deserved
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Frisk has grown up being passed from one home to another, being placed with families where they didn't fit in. They've learned that kids who don't fit in the family eventually get sent away.
Sans and Papyrus say they're a family now...but does Frisk really belong with them?
A lil fan work of the Heart on the Table Skelefam!
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It has been two years since monsters returned to the surface. Frisk has been trying to keep up appearances and be the best kid they can for everyone around them, always ready to lend a hand. They can’t give in to their exhaustion and pain and they absolutely can’t ask for help. They decided a long time ago that they’ll never be indebted to anyone ever again. They’ve already spent too much time repaying their debts.
But when Frisk has a run-in with their estranged father, they need Sans and Papyrus to come to the rescue. The encounter reveals a horrifying truth: that Frisk was a victim of childhood sexual assault.
In the days that follow, Frisk’s guardians have to figure out how to keep their kid safe and help them heal, and Frisk begins to hope that maybe, for now, they can trust the adults around them. But how long will this love last before they need to settle their debts?
Series
- Part 1 of The Love You've Always Deserved
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Having 1 HP isn't easy, as Sans can attest. Here's a bunch of instances where Sans gets hurt more than he should.
Series
- Part 2 of Not Skeletwins
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Sometimes Frisk has to wonder, how on earth did Sans and Papyrus manage to live on their own as long as they did?
After the monsters were set free, Toriel, the skeleton brothers and Frisk all moved in together, creating their own little makeshift family. However, with great family comes great stupidity. At least, that's how Frisk would describe it.
Series
- Part 1 of Not Skeletwins
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𝗨𝗡𝗗𝗘𝗥𝗧𝗔𝗟𝗘 | «Cuando Sans y Papyrus se mudaron a Snowdin, Sans no pensó que los demás descubrirían jamás lo joven que era en realidad. Se sintió tan aliviado cuando vio que todos pensaban que era solo un monstruo pequeño y pudo utilizar eso como una oportunidad para conseguir empleo y mantener a su hermano mayor y a el a flote, sin embargo, cuando Papyrus decide que eso no está bien y difunde la edad real de su hermano, Sans debe acostumbrarse a comportarse como alguien de su edad y aceptar que no es tan malo.»
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Papyrus learns the wonders of human nutrition.
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The Tyrant is dead, and Papyrus, the rightful heir to the throne, has taken his seat on it. Amongst the many, many problems that arise and wrongs he has to right, he is informed that the former King had a harem, one that is waiting for his decision on their futures. Papyrus feels he doesn't need a harem, but his life has, after all, always been surprise after surprise.
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Butterfly weed, forget-me-nots, snapdragons, black-eyed susans, purple columbine, buttercups... and purple hyacinth.
The hanahaki came hand in hand with Frisk's reset powers, and it ebbed and flowed as Frisk's loved ones forgot them and then grew to love them once more, repeating time after time. But this was it—there would be no more resetting. Frisk's powers were gone...
And one case of hanahaki remained.
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Papyrus... might have messed up.
To be fair, it wasn't like he had a manual or anything for how to take care of a babybones (he'd looked, but had yet to find one), and Sans certainly never seemed to mind.
Nothing even seemed out of the ordinary... until a throwaway comment by Alphys made Papyrus realize exactly how poorly he'd been taking care of his precious baby brother, and he was determined to fix it- whether Sans liked it or not.
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Recently, though, what interested Asriel more was the concept of life. Specifically, how long he could make it last in the harshest of conditions.
That was what led him to Snowdin.
or
How two best friends met.
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Summary
Sans and Papyrus’s kid takes an interest in painting.
Series
- Part 15 of Undertale aus with kid reader!
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this ringing in my ears is normal, actually by NamefulOdder
Fandoms: Undertale (Video Game)
03 Aug 2024
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Summary
I hate everything about you!
Why do i love you!?