#insanity*3

0 - Undertale

1x - Undertale Insanity (canon)

2x - Broken Mind (mostly canon)

3x - Lord Pursues (fanon, my take on Insanity*3)

4x - Downhill (fanon, my take, not on here sadly)

5x - (no name for this, yet. Literally just the point where it's completely just The Prototype. Fanon au/take obviously)

Backstory (starting from Broken Mind): After Sans had destroyed most of the underground, he had used the human souls with force to get himself out of the barrier to flee. Once he had left the underground, he escaped to find some place to hide, kind of losing his mind on what he had become. He fled to this place that had been called "Poppy Playtime." Once he secretly looked over the place, he had decided to kill most of the workers and scientists, as they were lost causes, bringing toys to life. Trying to fight these humans had left him terribly injured, so he had put himself through a whole process of giving himself new legs, ones, that were in some place within this factory. But that got Sans himself wondering, maybe Papyrus could go through a process such as that, as maybe he could bring him back, more alive than ever. He forced himself to figure out how it all worked. He did end up bringing Papyrus' consciousness into a toy (Papyrus WAS alive, ever since Insanity 1x). The "toy", completely didn't know where it was, and terrified, it left. Sans would go after it, but eventually gave up and focused on other matters. He had enjoyed bringing these toys to life, just to torture them. He would continue to do so, but eventually his skeleton hands had started to wear out, and so he would gather materials and of such to make him new hands. The toys and entities that were in the factory before all of this had gotten used to his presence, with Sans eventually getting the name of "The Prototype." Or, at least of something that is able to bring things to life involuntarily.