Sans is a very dangerous and lethal skeleton, just like his brothers. When offended, he will either threaten, seriously harm, or might even kill the person that pissed him off in the first place. seem to have control over his emotions and the way he acts depending on the situation.Sans is a skeleton monster with red pupils, that disappear when angry or serious, with sharp teeth. One tooth on the far left of his mouth being gold. He likes to wear a black suit with red under vest. tends to smile