Skeleton has a heavily disabled child who will need help to eat, change, and walk, can't talk, and this for the rest of their life. For the main 10!
Undertale Sans - Sans is up for the challenge pretty much right away after birth. Sure, they're a little different, but eh, he wasn't supposed to be that small, and he still turned out alright. It will take a bit of adjustment, but when motivated, Sans is pure genius and he will find all types of things to help with everyday life, sometimes making it work with only string and tape and a bit of physics. He never treats his child different; and he will very patiently train Papyrus, Undyne, Alphys and Toriel so they can help too if they're alone with them. Family is family, sometimes you don't choose what it looks like and that's ok. He loves them all the same.
Undertale Papyrus - He was quite panicking at first, but like every time Papyrus is panicking, he has a long talk with Sans, who is really good at reassuring him and convincing him that it won't be that difficult. I mean, he's quite literally a nurse, what are you scared of? Sans assures him he'll help, and his friends will help, and his partner will help. He won't be alone in this, and it's maybe time he realizes he can rely on people too, without being forced to be the one holding everyone together on his shoulders. It will take some adjustments, and a lot of trying and failing, but in the end, he manages to create some routine that stresses his autism less and less as weeks pass. He can do this. He just needs a stable routine, and then he can make it work.
Underswap Sans - Well, that's where you realize Blue wasn't ready to be a father. He tries, he really tries, but he's struggling a lot. He doesn't really know where his place is in the family anymore, he feels like a burden because he doesn't know how to act with the baby, unlike his brother, who sort of took everything in charge because he wasn't there, and now he's wondering if he should still be here or not. Blue will adjust eventually, but the first few years are going to be extremely difficult, with a lot of crises with his partner.
Underswap Papyrus - He doesn't care. He doesn't need to work, he can just learn with doctors and educators how he can help, and it will be fine. He wants to stay positive. Sure, this was not how it was supposed to go, but they're here now. He keeps assuring his partner that it will be alright, and that, sure, it's a little different than what was planned, but he loves his baby all the same and he's ready to fight for them.
Underfell Sans - He's terrified, but he knows that's not what you expect from him right now, and so he keeps everything to himself. He can tell himself a million times he is not in the Underground anymore, it doesn't change his fear. He loves that baby already, but he doesn't know if he can protect them. They won't be able to defend themselves if something happens, and what will happen if he's not there the day it happens? He might be a little distant at first, as he's scared to get attached and that something take them away, but as months pass, he can't escape the fatherly love. Of course he loves them. He'll chill out as years pass; he just needs some reassurance in the first few years.
Underfell Papyrus - Like his brother, he's not too sure at first. Babies like this have zero chance of survival in the Underground. But it's not the Underground anymore, and he can't be a coward. He will take it slowly, one step after the other. He's clearly not sure about what he is doing at first, but as time passes, he'll grew more and more confident. Besides, he was wrong. His kid is strong, way stronger than him. You need to be strong to go through all those medical appointments without ever complaining. He loves when his child is smiling at him, and yes, he doesn't care if everyone is staring while he's carrying them on his back, mimicking a plane. His kid is happy. He will be hella protective though. Don't you dare look their way badly, as he will go from 0 to 100 really fast.
Horrortale Sans & Papyrus - It would go the same with both their kids: it's ok. Their lives, and those of the other skeletons living there, are full of struggles and traumas and fear. All of them are ok in the end. Sure, it means they will have to move some things here and there, but who cares? They have a sterile room, and some of their rooms already look like hospital rooms. One less or one more doesn't make much difference. Besides, that kid is going to be loved and taken care of by all the skeletons here. They will learn that it's ok not to talk, that missing a limb or being paralyzed is not the end of the world, that being disabled doesn't necessarily mean you can't have friends or a social life, and that even on the worst days, there is someone to help. Both Oak and Willow are ready for the challenge.
Swapfell Sans - Nox wasn't sure what he was doing until Toriel came to visit and threw a look of pure disgust at his baby. Nox felt anger growing, and for the first time, asked what her problem was with so much aggressiveness it made Toriel shut up and actually take a step back. Nox is done suffering from people's judgment. Yes, his child is disabled, and what? He loves them all the same. He will be extremely protective, and it might give him the boost he needed to finally take his life back from Toriel. He's old enough in the army to retire and live the rest of his life comfortably. She's still alive, so she doesn't need him to take the throne right now, and anyway, if she dies, who will make sure he actually takes the throne? You'll be dead! Who cares? What he cares about, however, is to make sure his child is treated with respect and love. Yes, they look different, they are still able to understand, to feel and he won't hesitate to call people out if they dare to be rude to them. He messed up enough in his life, not anymore.
Swapfell Papyryus - This is going to be complicated for Rus, as he will have to finally grow up and become responsible. He is struggling a lot in the beginning, but he's a fast learner. He gets overwhelmed, but he learns from his mistakes and he never makes the same mistake a second time. He wants to be there. He knows he's not the best father, that sometimes he can be childish and immature, but he wants to show his S/O that he's also reliable, serious when he needs to be, and that he can help raise that child even though it's not what he imagined. He's mostly nervous because he never had a father to help him grow up, and his brother failed him horribly in that role. He's scared he will end up as a failure as well despite how hard he tries. He's just scared to repeat the mistakes of the past.
Fellswap Gold Sans - Well, that's quite scary, but he will make it work. Wine's best quality is that he can adapt to anything. He will pay for a room fully equipped to help, he will pay for all medical exams and treatments they need, he will pay for expensive things to give them the same chances in life than anyone else. He's also very sweet with them. It reminds him a lot of how it used to be when Coffee couldn't leave his room because it was too dangerous outside. Sometimes, he tells them stories about his job as a guard, some other times he teaches them Morse code so they can communicate anyway. Wine wants them to feel special, because they are in his heart. And of course, he's involving Coffee as well. It's important Coffee is a part of their life too.
Fellswap Gold Papyrus - Coffee is extremely overwhelmed and scared at first, as he's not sure how he can deal with their disabilities in addition to his own disabilities. It seems like a huge mountain to climb to get there. But... He'll try. He doesn't need to try really hard though, as he's a natural at this, he just doesn't know it. Coffee starts to relax knowing Wine has their back, as the amount of equipment they needed and their costs made him have several panic attacks. He can focus on his child after that, and, well, he gets attached super fast. It's not easy every day, as he's not the most functional adult himself, but he's learning, and he's trying super hard. He makes mistakes sometimes, but knowing his child doesn't judge him is enough to give him the confidence he needs. He can do this. It can only get better from there, after a routine starts to settle. Being autistic, Coffee needs routines to feel comfortable, and once he has them, he starts to relax and finally live a little. It will be fine.














