Sans is a very lighthearted, Lazy and punny guy. He always looking for the best opportunities to make a pun or the most efficient way to slack off while making sure he always is helping those that need it. But while taking up a case as a detective/private eye or when in a fight Sans is very serious and never lets his guard down making sure he is always prepared for the worst.
Noir!Frisk (Love interest/Friend): Sans and Frisk are REALLY close, Both of them bounce off each other’s personalities.