Fem! Insanity! Sans

Backstory Her father (presumably Gaster) infects Sans with one of his experiments. This infection caused her to become a psychopath. The chemical (probably Determination) removed crucial parts of her mind, namely Happiness, Confusion, Common Sense. Upon meeting Chara, she realized the power of RESET, the ability to commit murder and get away with it. Upon knowing of this power, she uses it to Reset and kills everyone once the timeline reset.

As a psychopath, she enjoyed every moment of it. She has a rather sick personality and is portrayed as "unbeatable" due to his immense power.

Profile Appearance Her appearance is similar to Undertale Sans. Her left eye twitches whenever she kills people. She has blood on her mouth, scattered throughout her teeth. Insanity has an unusually large smile, so large in fact that it meets with her eye sockets. She has unusually small pupils that shake from time to time. She has wounds in some parts of her body, indicating the areas where her victims tried to attack, most notably her head. It has multiple cracks because it is the most practical area to strike.

Personality As the name implies, Sans is shown as very insane, incapable of feeling love and empathy towards others. She skewers monster's heads to show a sense of victory, but always carries Papyrus's head. Sans is so insane that she will attack anything, from noises to insects to movement and anything that can potentially hurt her. However, Sans will not do this while battling her victims, giving full concentration to them. Sans has a weak body, but endless energy.

Whenever she fights, she will be full of adrenaline that she will viciously shake and strike with insane power at random moments. She talks, but never to others. She repeats her victim's movements and makes random whispers to herself, further portraying her insanity.

However.. she has found one person to love, and now that her eyes are locked on you, its pretty much over.

Abilities Spiked bones Unlike other versions of Sans, her bones are sharp and can deal a large amount of damage. She holds them in her hands and stabs her victims with them. These can vary in size like normal bones.

Hard hitting punches She is able to punch very hard, harder than a normal human. She uses this, and the bones, more than her blasters and telekinesis, as she prefers hand-to-hand combat.

Insanity Blaster Like a normal gaster blaster, except it is cracked and blooded. She doesn't use this as much as its a bore for her.

Shortcuts Sans can travel or teleport anywhere instantly.

Telekinesis It’s the same as the other versions, but she also doesn’t use it that much. She prefers hand-to-hand combat.

Trivia Faku’s original Insanity Sans’ sprite was inspired by another one of Zero Danteero’s Sanses, called Madness sans. Madness and insanity are technically different, but can be considered the same. People often mislabel Insanity Sans’ Alternate Universe as an AU called ‘Insanitytale’. This is completely wrong. There was drama surrounding Insanity Sans’ ownership around late 2020, as a youtuber called FanOverDell had falsely claimed ‘official’ ownership of Insanity Sans and rebranded her entire story and relabeled her AT as an AU called Dirtytale. this name was made because sans here was the ‘Dirty Brother Killer’. Insanity Sans’ Megalovainia remix was posted without any information on the sans in the thumbnail. It was revealed later that Zero Danteero had a story that described her, incase it was ever required.

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