in this au, frisk never stops killing intill they can do a very perfect genocide route. Sans and the other never seen a pacifist or normal timelines or seen mercy of any kind. Sans or Crimson is not that really nice to anyone anymore and stays in his room intill he knows everyone is dead and teleports to judgement hall to fight them. Papyrus or Nyx does remember timelines but always trys to change frisk mine time and time again and 'Crimson' never seems to care if he dies well he does it, and frisk or Arachna has no empathy and was declared a psychopath before she turned 4. She world hurt animals and anyone around her, so when she turned 8 she was thrown to the world of the monsters, whee she never changed and still trys to make....the PERFECT genocide timeline.
Here’s my idea of sans
