Sans is an energetic Skeleton that is confident, very friendly and motivated all the time! He really cares much for his brother Papyrus and Others. He's seems sweet and cute because of his small size, and most of the people underestimate him because of that. But Sans can act pretty mature, combined with a dangerous aura. He's not so innocent as he may look like. He's just as observant as the original Sans, and won't hesitate to take action if something goes wrong.