just Sans :P

If the protagonist saved in the final corridor and listened to Sans's speech, then logged out, they can reload at this point and listen to his speech again. Sans will notice that the protagonist has already heard him speak before and will give them a secret word. After two more saves, Sans will give the protagonist the key to his room.[12] This only works if you haven't killed anyone.

He can also be found on the second floor of Hotland, behind one of his stations. This time, he offers to buy a hot dog for 30M. If you run out of inventory space, he'll sell the hot dog "on the house" and place it on the protagonist's head. This will continue until the number of hot dogs on the head reaches 29. After this, Sans will claim he can't reach higher. The last time he can be encountered before the final corridor is near the MTT resort, where he offers the protagonist a bite to eat at the restaurant. If you accept, he'll take the protagonist through the shortcut again. In the restaurant, he tells you that at the entrance to the Ruins, he was chatting with a woman on the other side of the door, sharing bad jokes. However, during one of their encounters, Sans noticed that the woman "wasn't laughing as hard anymore." She asked Sans to watch and protect anyone who came through that door. Sans then admits to the protagonist that if it weren't for the promise he made to that woman, the protagonist would have "died where he stood"[5], but then immediately dismisses this as another joke. He mentions that he did a good job protecting the protagonist, but questions whether he did if the protagonist ever died. Before leaving, he asks the protagonist to take care of themselves, as there is someone who truly cares for them. If the protagonist hasn't received any OP, Sans won't judge the protagonist, but rather praises them for never receiving UR, for loving everyone, and for the choices they strived to make. He appreciates the kindness in the protagonist's heart, saying that the fate of the monsters is in their hands—either letting Asgore take their SOUL to free the monsters, or taking Asgore's SOUL to leave the Underground. After the speech, he believes that the protagonist's determination will help them make the right choice.[11] After that he leaves.

The next encounter in Waterfall takes place with him at the telescope. He claims to have started another business with a premium telescope. Since Sans knows the protagonist well, he'll offer to take a look for free. If you accept, another prank awaits. Later, during the escape from Undyne, he can be found sleeping behind another observation post between Waterfall and Hotland. Sans distracts Undyne with his appearance, buying you time. After the chase, he will no longer be there. He can also be found on the second floor of Hotland, behind one of his stations. This time, he offers to buy you a hot dog for 30M. If you run out of inventory space, he'll sell the hot dog "on the house" and place it on the protagonist's head. This will continue until the number of hot dogs on the head reaches 29. After that, Sans will declare that he can't reach higher. The last time he can be seen before the final corridor occurs near the MTT resort, where he offers the protagonist a meal at the restaurant. If accepted, he will again lead the protagonist through a shortcut. At the restaurant, he reveals that at the entrance to the Ruins, he was chatting with a woman on the other side of the door, sharing bad jokes with her. However, during one of their encounters, Sans noticed that the woman "wasn't laughing as hard anymore." She asked Sans to watch over and protect anyone who came through that door. Sans then admits to the protagonist that if not for the promise he made to the woman, the protagonist would have "died where he stood"[5], but then immediately dismisses this as another joke. He mentions that he did a good job protecting the protagonist, but questions whether he ever died. Before leaving, he asks the protagonist to take care of themselves, because there is someone who truly cares for them.

Sans first encounters the protagonist as they exit the Ruins into Snowdin Forest. As Sans follows the protagonist, their silhouette can be seen passing between the trees in the foreground. He will also break a heavy branch. After shaking hands, Sans introduces himself and explains that his job is to keep an eye out for humans, though he has no interest in capturing them, unlike his brother, Papyrus, a self-proclaimed human-hunting fanatic. Sans then hides the protagonist behind a conveniently shaped lamp while Papyrus heatedly discusses his laziness, the importance of puzzles, and his future popularity. After Papyrus leaves, Sans asks the protagonist to show himself to Papyrus, as it will lift his spirits. Sans appears several times throughout Snowdin Forest. He sometimes accompanies Papyrus, offers advice on countering blue attacks, and observes and comments on his brother's puzzles. Sans doesn't participate in any puzzles except the word search. If the fun value is between 40 and 45, Sans can prank the protagonist by calling them near Papyrus's cardboard post.

Thanks to his "research," Sans is aware of timelines; Flowey notes that a skeleton is the cause of most of his resets. His knowledge of timelines makes him more perceptive, allowing him to detect when the protagonist is acting unusually simply by looking at their facial expression. In the Genocide Route, Sans uses the protagonist's facial expression to determine how many times he has killed them. Sans is able to dodge the protagonist's attacks, which distinguishes him from other enemies in the game. However, his combat power is quite energy-consuming, and by the end of the battle, he shows visible signs of fatigue, causing him to fall asleep mid-combat. The Gaster Blaster is a weapon Sans uses in battle. As its name suggests, it is somehow related to V.D. Gaster. It is a relatively fast-moving ranged weapon of varying sizes and purposes. Some of them fire two or more shots. The blaster resembles the skull of a dog- or dragon-like creature, firing laser beams from its mouth. When fired, the lower jaw splits in two. Sans uses it in both standard and blue modes. The beam's width directly depends on the blaster's size. In his final attack, Sans uses multiple blasters firing in a circle. During and after firing, the blaster's eyes begin to flicker.

Name

Sans's name is a reference to the Comic Sans font used for his dialogue. It's also a reference to the webcomic Helvetica, whose main character is named after the font of the same name. JN Wiedle, the creator of this webcomic, is listed in the Undertale credits as a special inspiration for Sans and Papyrus. In Japanese phonetics, Sans's name is homophonic to the Sanzu River, the boundary between death and the afterlife in Buddhist lore, which, like Sans, judges all who cross it for their deeds. Abilities

Sans has the ability to use "shortcuts," which allow him to quickly cover large distances in a short time. Furthermore, Sans can appear in multiple locations within a single room simultaneously (as seen in the room leading to the mysterious door in Snowdin Forest), suggesting that Sans possesses the ability to teleport. Doggo also alludes to this, claiming that the skeleton sometimes appears nearby without any indication of approaching (this phrase can be heard if you speak to Doggo at Grillby's Pub after sharing a meal with Sans, or if you ring the bell at Doggo's post repeatedly).

Sans is presented as a lazy character, but it is emphasized that this laziness is a result of his knowledge of timelines, and that everything he has worked for can disappear without a trace with a single reset.[7] Furthermore, Sans himself clearly does not consider himself lazy, stating that this is as far from the truth as possible.[8] Sans appears to have a scientific background. Evidence of this includes a quantum physics textbook, his workshop, his love of science,[9] his inexplicable ability to teleport, and his research into timelines.[10] Sans hints that he once had another life that he was trying to return to, saying that he "gave up trying to go back a long time ago." When Sans becomes a lost soul, he tells the protagonist, "You'll never see them again." Although it is unclear what exactly Sans is trying to return to.

Personality

Sans has a very laid-back personality. He enjoys sleeping, which he does during his breaks at work. He is known for his jokes, which his brother, Papyrus, greatly dislikes. Sans is also kind and friendly. He believes in the good in others, and that they do bad things because something in their lives led to them.[3] He believes that actions should be motivated by the desire to protect friends and help someone, not revenge.[4] Sans once said that he doesn't like making promises, but when he does, he tries to keep them to the end. According to him, the only thing that saved the protagonist from death was his promise to Toriel that he would protect the fallen.[5] On the Genocide Route, he can no longer keep this promise, but even when he is about to break it to stop a mass murderer, Sans mentally apologizes to Toriel.[6] Sans is presented as a lazy character, but it is emphasized that this laziness is a result of his knowledge of timelines, and that everything he has worked for can disappear without a trace with a single reset.[7] Furthermore, Sans himself clearly does not consider himself lazy, stating that this is as far from the truth as possible.[8]

Sans is a key character in Undertale and Papyrus's older brother. He is first encountered in the Snowdin forest, watching over the protagonist after they escape the Ruins. He serves as a supporting character in the Neutral Route and the True Pacifist Route, and is a heroic antagonist and final boss in the Genocide Route.

Sans is a rather short and "big-boned" skeleton whose hands strongly resemble mittens. He is always seen with a wide, toothy grin on his face. Sans wears an unbuttoned blue jacket (or sweatshirt) with a gray hood and a white T-shirt underneath, black shorts with white stripes, and a pair of slippers.[2] His black eye sockets contain white pupils that disappear when he is serious or angry. When using telekinesis, Sans's left eye develops an iris, flashing blue and yellow (the colors of patience and justice), while his right pupil disappears.