Error was badly injured in a fight against Ink and Dream. In his attempt to escape, he falls through a portal to Undertale just as the world is about the reset. The universe, not knowing what to do with the unfamiliar code, decides to make the skeleton a brother to San and Papyrus.

One day error and nightmare where walking through the forest until they found an unknown portal and went inside. They find themselves in an unknown place. They have to fit in while also trying to find a way back to their own multiverse.

In this world, when Error leaped off the edge, he took Ink with him. (Cover art and any story art is mine)

It's been three years. Dream and Ink have tried and failed to defeat Nightmare, hopelessly searching for some way to stop his reign of terror. They managed to diminish his gang of ruthless killers down to three: Cross, Error, and Nightmare himself. It was now more or less a fair fight between the two sides. But the battle is far from over. Little do they know, the solution to their problem is just a 𝐁𝐥𝐚𝐜𝐤 𝐃𝐢𝐬𝐤 away....

Papyrus was alot of things. He was a Skeleton, a Monster, a Son and even the Royal Judge! However above all Papyrus was an Older Brother to his little brother, Sans Star Serif.

Andrew was a normal teen before the accident, then they received massive brain damage. They forgot a lot of things, and then they were killed in an earthquake. And reborn as Sans in a very Unusual AU. This is a Collab story, First one! For the other POV visit: @UnderTaleHyperFixed

Someone dies and is reborn as Ink Sans. But something's different... their born as a Forced God of Creation. Waking up in the Doodle-Spear with voices yelling at them and then later getting beaten by Fate? Yeah it's safe to say that we are in for a bad time. However it also seems that Error and Nightmares gang are also being forced into doing their 'jobs'. And they seem to be the only people to be able to tell that something is off with Ink. Wonder how this is gonna go. Hopefully it doesn't end with me jumping into the void....

Undertale Sans... Underswap Papyrus... Storyshift Chara... What could go wrong?

A Story where Steven Universe and Peridot Meet the Monsters from the Underground and This is some what a Stevidot Story but with a hint of Undertale So will they Survive down in the Underground found out

Dusttale. A Korean Undertale AU. Sans completely has lost his mind and there is no way of stopping him. Unless you kill him for the second time. At first you didn't feel regret until this particular incident happened. Chara is even intimidated and scared. Sans isn't normal, and everyone is dead. But you didn't kill them. LV 19. V.S. another LV 19.