Sans (Dust Sans)

Before the human arrived in the Underground, Sans was more of a lazy and friendly skeleton who would often make jokes. He would go to Grillby's for a good amount of time; he was very caring about his brother, Papyrus. However, after the human reset and did numerous Genocide Routes, one day due to unknown circumstances Sans suddenly remembered all the Genocide Routes. This changed Sans, and made him kill other monsters for LV; even going as far as killing his own brother. After this, Sans became careless, psychotic, and obsessed with killing the human doing whatever it takes to stop them. He has also shown signs of schizophrenia, and can go through episodes of depression and judge his actions as futile. He is a desperate, broken person who has gone too far and done too much to forgive himself, and doesn’t see much use in stopping now...(u start it because I'm too lazy to put in the opening sentence) (pray for my fingrs! ok bye!)