Sans is a small skeleton wearing a blue hoodie and Navy (grey, dark green) shorts. he also has dark blue shoes with white laces, often seen smoking.
Sans wears a dark blue Jacket with a grey shirt underneath. His jacket stripes seem like a blue/pink combination. He also wears blue flipflops.
Sans wears a blue hoodie with black/grayish pants with white stripes. He wears flipflops with blue and white socks.
Sans is a calm, lazy and even fun character, but he can become very serious in situations that require it. Although his brother papyrus is not happy with his vague attitude. Sans is considerate, as well as having lots of respect. Sans is quite protective of his brother despite his chill attitude and his brother's hate for his jokes.
Sans has the ability to dodge attacks, and excels in combat and fights with unique abilities that include: Karmic Retribution, changing the effect of gravity on the SOUL and attacking the protagonist in the selection menus. He can also invoke Gaster Blasters, which are unique skulls firing a powerful beam, as well as having telekinesis and the unique ability to know of the RESET and its effects. Like Papyrus, his powers mostly involve bones and Gaster Blasters, and is more tense than the other battles in the game. Sans is the most difficult opponent of all the enemies in Swapswap.
Sans starts his attack with a series of Skull-like Gaster Blasters, shooting a Blue beam of energy towards the player, and a bone wave which you have to dodge in order to survive. Sans states (If you manage to survive after that) "Huh.That's why you don't use your strongest attack first". After that, MWEHGALOMANIA can be heard during the fight. Sans has a Blue glowing eye which controls the gravitation of the player, and can summon Gaster-Blasters. Near the middle of the fight, he "Spares" you. If you accept, You get "dunked on". On the other hand, if you continue to fight, he states that, "It was worth a shot".
Sans cares for and admires his brother. He reads him bedtime stories and gives him presents under the identity of Santa. Nonetheless, He also leaves a dirty sock in their living room for Papyrus to fuss over.
Sans worries about others hurting Sans or taking advantage of him. In some Neutral Endings, Sans is afraid to tell Papyrus about other characters' deaths, so he lies about them going on a vacation.