Female Sans

Profile Appearance Sans appears as a relatively short and paunchy skeleton girl overall a short stack, with mitten-like hands. Sans is always seen with a wide, toothy-grin on her face. Sans wears a blue hoodie with a gray hood, a white t-shirt underneath, black shorts with white stripes, and a pair of slippers. Her eyelights flicker out when she is angry or pissed. When Sans uses telekinesis, her left eye flashes light blue and yellow (the colors for patience and justice) while her right pupil vanishes, she has ectoplasm and her ass is fat, and her breasts are B-cups, and she has some light chub, her thighs are thickish.

Personality Sans is lazy, often sleeping on the job and taking breaks. Her laziness is a combination of fatalism and apathy, as she is aware of timeline resets. Conversely, she suggests that this knowledge could be "a poor excuse for being lazy."

She enjoys being mischievous. Sans primarily acts this way towards those she is in good terms with. Her antics range from an assortment of illogical, juvenile, and slightly inconvenient pranks. Examples include Sans "selling fried snow," using whoopee cushions, sharing an unscrewed ketchup bottle, and eye paint on a telescope. She is not above utilizing her teleportation or other magic for practical jokes either. Sans is also fond of making the occasional low-brow puns. She enjoys making others laugh in general, as she also performs at the MTT Resort as a comedian

Despite Sans being apathetic towards her own life, she is considerate to those she cares for. For example, Sans is a regular at Grillby's, and the monsters and Royal Guard dogs treat her kindly. Sans has informed Big Mouth about "all kinds of incredible foods," yet Big Mouth comments that "she always orders the worst burger off the menu." Although Sans hates making promises, she respects Toriel's request to watch out for any humans. Even if the protagonist killed people that were close to her, Sans refrains from broaching the topic until the Last Corridor. In a Neutral Route ending where Papyrus or Toriel is alive, Sans omits the protagonist's slaughter to either of them.

She is also observant; Sans reads the protagonist's expressions and can often tell when they have already done certain tasks, as when SAVING and reloading. Though Sans is usually agreeable, she can become eerily serious to emphasize a subject. Regardless of the human being partially or wholly merciful, Sans tells them that if "the old lady" (confirmed in the True Pacifist Route to be Toriel) had not made her promise to protect them, "(they'd) be dead where (they) stand." During the Genocide Route, she does everything in her power to kill the protagonist, even faking mercy.

Sans may have a scientific background. Evidence includes the quantum physics book, her workshop, affinity for science, her inexplicable ability to teleport and her timeline research.

Sans has implied she once longed and searched for a life that she cannot go back to as she "gave up trying to go back a long time ago". As a Lost Soul, she tells the protagonist that "you'll never see 'em again." Although what Sans is trying to return to is vague.