I (literally) dreamt up an au!Sans this morning and idk if anything like this exists already but if it does I’ll lose my damn mind.
Visually, he looked something like Horrortale Sans but with three roses growing from the crack in his skull. One was red, one was green, and one was purple. There was a “cover art” poster for his story featured, that showed him half-lit from the side and silhouetted and the roses lit up in neon, and I recall those being the colors on the poster, which is why I assume the roses were the same on his person. They were duller in person though, especially the green one. They seemed significant somehow. My brain nicknamed him “Rose/Rosetale!Sans” but I just looked that up and that’s already a thing, so idk what to call him. He was having a panic attack, and I was trying to calm him down. He implied that his Papyrus was gone and was begging not to be left alone again. Whether Papyrus had been killed in that timeline, killed in a previous reset he remembered, or if he had had a nightmare/episode and was mis-remembering wasn’t clear but he believed it to be true. He seemed more lost than violent, and would vacillate between snagging me by the sleeve and saying some slightly disturbing things about me not leaving, and releasing me and begging me not to go. I got the impression that he was actively recoiling from me whenever he thought something dark or possessive because he was terrified to act on those impulses. Important note: I was trying to go the grocery store. I was not leaving forever. But I didn’t doubt that in his state if I was out of his eyesight for even a moment he would forget that I was coming back/that I existed at all and would dust himself.