Dust!Sans

"Kiddo, I told you several times that your actions had repercussions, but you just ignored them all. And now here we are, I'm a dirty killer like you. But, to be honest, I don't care any longer; the tears have been shed, and I'm better than ever, thus I have another question for you, Chara... Instead of a bad time...  WANT TO HAVE A MAD TIME?! "

- -Dust!Sans Dust!Sans, also called Murder!Sans is an alternative version of Sans who has gone insane as a result of the player's numerous resets and now intends to use their own method of LV in an attempt to defeat them which ends up as an addiction rather than a method to kill the player, he has massacred all of his friends and other monsters in this attempt.

Biography
Dusttale is a Character-Centered AU about Sans. It is an AU where Sans grows an addiction for LV so he can kill the human, so he kills the other monsters (Including his own brother), eventually getting to LV 19. Sans remembers many of the previous timelines and is sick of the human always going on a genocide route.

Personality
Before the human came in the Underground, Sans behaved similarly to his original Undertale counterpart; he was a lazy and friendly skeleton who frequently made puns. He would spend a significant amount of time at Grillby's; he was very concerned about his brother before obtaining DETERMINATION and now, he is willing to sacrificing the lives of other monsters. Sans become careless and obsessed with murdering humans, going to whatever length to stop them. Despite his carelessness, Sans seemed to regret murdering Papyrus.

Appearance
Murder!Sans is dressed in a blue jacket, a white t-shirt, black shorts with white lining, and grey slippers. His garments are stained with the dust of those he murdered.

He usually has white pupils in both of his eye sockets. However, during fight, his left pupil is cyan ringed by red and his right pupil is merely red, indicating that he lost the yellow of justice but acquired the red of resolve. His eyes may also shift to be empty. And finally, if he was ever to pushed to insanity, his eyes grow a bright purple.

LV
LV, LOVE or simply Level of Violence is a measure that people in the undertale universe use to determine how much of a soulless Megalomaniac they are. This can also be used as a sign of someone's mental stability when it comes to caring about other people. Sans speech during the neutral route explains this perfectly.

"When you have enough EXP, your LOVE increases. LOVE, too, is an acronym. It stands for "Level of Violence." A way of measuring someone's capacity to hurt. The more you kill, the easier it becomes to distance yourself. The more you distance yourself, the less you will hurt. The more easily you can bring yourself to hurt others." -Sans

Timeline Awareness
Dust is completely aware of the timelines that occur within the underground, which is the primary reason he became this way.

Mad Gaster Blasters
Dust saw that LV had appeared to augment his gaster blaster's destructive and overall capabilities; the blasters can now annihilate nearly anything that is pretty resistant, and the more LV Dust obtains, the more destructive these blasters become.

Bones of Savagery
Originally, these were regular Undertale Sans bones, but after Dust's descent into madness, the bones were transformed into bright purple ones. The bones are extremely sharp and can pierce through flesh like butter and crack hard surfaces with relative ease. Dust can make weapons out of them, such as scythes, war-hammers, axes, and so on, he can even construct arenas and/or battlegrounds to keep people from escaping.

Stealing from The Dusted
Whenever Dust kills a monster, he can take that monster's magic and add it to his arsenal. If a monster's magic is proving to be too powerful, Dust will only be given a minor portion of that monster's magic, but that portion would still be powerful nonetheless.

Papyrus Scarf
Dust's most prized and sentimental item, the scarf, was originally worn by his little brother, Papyrus, but after he killed Papyrus, Dust was overcome with guilt, even though he aimed to save everyone after killing the player, taking their soul, and resetting the timeline to restore things to their former state, but he still felt guilty. Dust's sanity is maintained by the Scarf; despite his insanity, he still loves his brother and The Scarf remind him of the past and what he's fighting for and will stop him from becoming entirely insane.

The Bonetrousle Hallucination
NYEH-HEH-HEH!