Undertale was created by Tobyfox. This guy is a genius and i unly use his characters.


Her sharp teeth bit into her jaw. The pain seem bearable . It's not the first time, and it will not be the last, she khew it in her bones.

She gave almost all her magic for it, it hurt like hell, but she is in hell. A hell called the Underground. Here, it's Kill of be Killed, and she will not let anything kill her. Human, Monster, nothing!

Her husband is nearby, sharing his magic to give birth to the new soul. He's just here by duty, not by choice. Little bones form in her arms, lifeless, another failure. She says nothing. Her knight went away, decieved. She failled him once again.

She got to her feet, leaving the newborn; she don't have to watch it dust. She'll do better next time,

but when she's about to pass the door, she heard a faint cry. Surprised, she turns around and sees the tiny baby moving, crying. His dark blue soul is pounding in his chest. How can it be?

She watches him closely, One HP...

Too bad, but a last, she didn't fail this time.

Taking the newborn in her arms, she envelopes him in a blanket, thinking. How can a creature so weak could survive in this place. He was just free EXP to the other monsters, and a weakness for her and her husband.

She finds him in Hotland, watching the magma, lost in his thought. The baby is asleep in her arms. She bows before him and present the newborn.

-Mon Seigneur, your Son lived. But i'm afraid he just has One Hit Point.

She caresses the smooth skull of her son. He's beautiful. Just, imperfect; and if there is one thing her husband hate more that humans, it's imperfection; and as she thought, she sees him using his magic, creating a purple sword, aiming at her child.

-Then, I shall end his miserable life before someone else harvest his EXP...

He's not even hesitating. How can he?! Furious, she unleashed her magic, attacking her Knight. He don't stand a chance but her instinct act for her. Only her can have the right of life or death on this baby.

-Don't you dare Gaster!

A wave of yellow magic fly to the knight. He deflect it easely, back at her. She fall on the ground and his shadow come over her and her baby. The child is crying. He's loud. At least, death will shut up this sound. But she's a mother now. And even in this world, a mother can't give up on her future, on her descendant. Her husband is about to kill her and the baby, aiming his sword without a word. But he stop as she speak:

- He may be free EXP but he's the son of Gaster the Powerful! How do you think everyone will react? Knowing that the Great Knight himself kills babies... His own blood! The Queen herself has forbidden to kill the children. What a reputation you'll have.

She sees him narrow his eyes.

-Killing me or this child won't bring you anything but shame. Now think of this. This weak creature can be a new proof that you're the greatest Knight ever. Imagine. You raising a useless monster with one HP to be one of the most powerful Monster that ever have been. Everyone will think he's a easy kill, but with your training and enough motivation, you can make the whole Underground kneel before your descendant; and you and me will be in the shadow, pulling his strings... What do you think Mon Seigneur?

She waited, looking at the face of ther once loved one. He smile and the sword disapeard before her eyes. He the takes her face in his holed hand and squeeze her bone. It hurt a lot.

- That's why I married you Lucy... So ambitious... And smart. I love that.

He looks at the baby crying in her arms and takes it with force. He look at him, she's afraid he might let him fall in the magma.

-But I warn you Lucy, if you show weakness again, you'll be dead.

He taunts her, letting the baby fall just to grab it again by the head, above the magma pit.

-BOTH OF YOU...

Years passed, he has grown and now is old enough to use his magic. Mother says that he's still a child but he desagrees. After all, Master already began his training.

He never saw anyone in this dark place except the Master, his mother and the few opponants the Master offered him.

He's hidden, he don't know why. Mother tried to explain to him that he's not ready for the real world. That he must be the fiercest of all and understaind how it works. He likes Mother. she's not yelling at him like Master . He can't see her often. He only can see her if he progresses. So he does his best.

He always does his best. But it's never enough. Never ever. So he's hurt by the Master; he didn't count all the time he almost dusted because of his weakness. A scar on his right eye acts as a reminder of the cruelty of the Master. When he was four, he tried once to call him Father and that simple word triggered a rage in the Master. He remembers what Master told him this day:

-You haven't earned the right to call me that.

He wanted to gain this right. To be praised by his Father, not his Master. Then, he'd be his equal.

He had to learn the lessons of life as the Master told him.

Never ever let anyone hit you.

LOVE must only be a Level of Violence.

Never ever show weakness.

Any weakness can be used against you.

Never Ever show mercy.

It's Kill or be Killed.

Only Mother called him his birth name. His font, as she told him one day. Master called him Boy, or Faliure or Soldier. He's nothing else. But he want to be something more, for the Master.

Today is special. Today, he gained a LV, but his HP is still the same. He loves when he gains HP. Master is nice to him when he does. He don't hit him and even pet his head. He tries not to smile when it happens, he's not allowed to. But for him, it's the best feeling ever. It's almost like if Master loved him.

But this time, he can't see Mother, he don't have a pet. Master wants to show him something.

This something is small, it doesn't look like a soldier like him.

-What is it Master?

He's suspicious, he didn't like that little thing. Do he have to kill it too?

-Let me present to you, Papyrus. Your brother and rival from now.

A brother? He hadn't seen Mother in month and now he had a brother? He looks at him. He's not a good opponent.

-My rival?

-Yes. Look at him. He's perfect. The son I always dreamed of.

Hatred. That's what he felt for the baby at this moment. Why this thing could be the son of Master and not him? Why did he deserve a name by the Master and not him? How could he be so perfect? He looks at his HP and frowns. Papyrus has more HP than him and his ATQ and DEF are higher than his.

-How do you feel Boy?

-Can I dust it Master?

He didn't hesitate one instant, bones are already circling around the crib, the baby tries to grab one as it passes in front of him.

-No.

Master's voice is calm, as always. So he makes the bones disapear.

-Know that it's important to get allies. If you get to gain the loyalty of a stronger monster or one with influence, monsters will respect you. Loyalty is a rare virtue, gaining it is harder than killing some runt. It means that monster is willing to do anything for you, and will always make choices in your favor . Making your life easier. Having a loyal servant is a symbol of your greatness. Now Boy, there are numerous paths you can choose from now.

Master takes the baby in his arms.

-You can consider Papyrus as a threat and wait for the day when I'll let you fight him. You can accept the rivalery expecting to be better than him so I can call you my son. You can also be stupid enough to try and love him as your brother, being weak is what you do best after all. Or...

Master placed the baby in his arms

-You can rase him yourself. Making him the perfect pawn. A puppet for you to play with. Make him love you, do all the things you don't want and inspire respect in his soul. He'll be yours to command. So. What do you wish to do Boy?

He never really had a choice before. It was strange. He looked at the eyes of the baby. He hated that thing with all his soul. He could still drop it on the floor. Babies are fragile and that could kill it, but he thought about what Master says. Having a loyal servant inspired respect.

-How do I take care of him?

He finally asked.

He was his universe. All he wanted to do was to please him. How he loved him, it almost hurt.

He was not suposed to. Master always took him aside to talk to him, saying that love is a weakness, that one day they might fight. But he refuses.

Never will he willingly hurt his brother. The contrary was not true alas, but he knew why; and that made him love him more and more.

All brother wanted was to protect him from the Master. From their father; if Master thought that they hate each other, then he would be safe. But he loves his brother too much and Master know it. He won't let him hurt brother again.

After finding the Master's secret, he used it without him suspecting who did it. What a marvelous power. He didn't like it but as long as his bro was okay, it was worth it; but Master hid it too well now. He's scared. What if it happens again?

-S... Sans?

He asked one day, they were alone in the training room. He could speak freely. Almost...

-Do you know Father have a device to rewind time?

His brother gave him a strange look. He was the taller one but he felt so little when his bro look at him like this.

-Is that one of your stupid jokes Papyrus?

-No, I swear. He uses it when he kill you in training or when... when you kill him.

He saw the sharp teeth of his brother as he smiles at the idea. He is happy to see his brother smile. For so long he didn't even knew how to do that, Master had forbade it. When it was only the two of them, as they grew up, he did all he could to see his brother smile. Especially when he didn't want to.

-I think you took too much hits on your head.

-But it's true! You're so strong now that even he can't beat you! I... I could steal the device and we could dust him and...

-Stop! He's our father! We can't dust him like that!

-He's not our father! A real father wouldn't treat you like that! I've read it in books! Fathers are suposed to protect. All he does is using you to prove a point!

It hurt. Sans hit him hard. He fell on the floor, whimpering. He let his brother attack him. And all he do is ask for mercy. Because he loves his brother. More than his life. And more than his sanity.

His HP is low, so low... He lost a tooth again. He will need time to recover but Sans is calm now.

-Now... what is this device you talk about? You are way too stupid to invent a story like this one.

It's over now. They are free. He told the story to his lord. So he can remember, just a little. He would never hide any information from lord, even as crazy as this. No monster remembers the Great Knight. Only him. And his lord as long as he told him the story of their battle for freedom again and again.

How they fought and how he ended up saving Sans, pushing the Master into the Core.

The lord knew that the only thing keeping him from killing himself was the love they shared. In this world, it's Kill of be Killed. And the only monster they could count on was each other.

He was happy. Really happy. He belongs only to his Lord now, and he will do whatever he have to in order to keep him safe in the Underground. Everyone knew to never underestimate the Great and Fierce Sans and his Lapdog Papyrus, for they were the most powerful duo in all Swapfell.


First Oneshot about the principals AUs.

Hope you've liked it.

I want to thanks Mysterie1985 who helped me, correcting this text. Whithout her, this text would have bee, illisible.

And thanks to Petra who asked a simple question about my Comic: Daddy's Secret (on Deviantart). Because that's how i came with the idea.

Se you soon for an other AU!