GS!Sans

GS!Sans is a variation of BB!Sans in a timelime called GOOD SISTER (GS). He is the older brother of GS!Papyrus, and the son of GS!Ariel and GS!Gaster.

He comes into the SHAETALE timeline hunting down GS!Papyrus, who had earlier came into the timeline with GS!Shae. He is poofed at the end of the arc by GS!Shae, leaving his fate unknown.

Appearance
Sans has the appearance of a typical Sans, but with some notable differences.

Standing at 4'9, Sans is a short, chubby skeleton. He has a rounded "top-heavy" skull with eye-sockets that is seemingly permanently in a glare. He has pupils, a triangular nose, and a large, almost chubby even, build. He seems to always appear angry or frowning.

GS!Sans wears the same signature jacket that BB!Sans has; a blue jacket with a puffy hood liner and white stripes. He also wears a dark gray t-shirt, pink slippers, and striped sweatpants.

Personality
Like BB!Sans, Sans is an apathetic, sadistic skeleton who has severe anger issues. He is very manipulative and abusive, often gaslighting Papyrus, and has little to no patience. He does not care for anyone but himself. He's shown to be very deranged as he has no issue killing his own brother or taking his SOUL for his own use. He also appears to hate humans greatly, especially the ones who show kindness to his brother. He further shows his demented morals when he was willing to lie to their own parents and manipulate them and when he has damaged his brother's SOUL.

He is shown to be verbally violent; he often is telling off his brother for minor things, often insulting, screaming, and gaslighting him. Along with that, he is shown to sometimes be physically violent, often beating Papyrus and even being responsible for his brother's scar.

He is also shown to be a megalomaniac, reavealing to ST!Sans that he was in charge and had control over everything Papyrus did until Shae had come along.

GS!Papyrus
Like the BB brothers, Sans and Papyrus have a very unhealthy abusive relationship, with BB!Papyrus being the abuse victim. They're shown to never get along, as BB!Sans has a bad temper and is often seen snapping at and insulting Papyrus.

Sans is not amused that he is related to BB!Papyrus and often takes his anger out on him.

GS!Gariel
At first, the relationship between Sans and his parents were on good terms, as neither suspect he's a bad person. However, when his true colors and the truth is revealed, both parents are shocked and want nothing to do with him, permanently straining their relationship.

GS!Shae
Upon meeting, the two immediately hate each other. He resents Shae for helping Papyrus. He has no issue hunting her down to kill her. He uses her as a scapegoat, manipulating the ST gang into thinking he's the worried, mother-hen brother trying to rescue his brother from an angry, violent human.