Sans is a researcher and assistant scientist with Alphys and the humans to create advanced technology. When sans is not working there he is a stand up comedian and runs a hot dog stand Frisk is and teacher at Toriel's school and is very sweet Sans brother Papyrus is part of the royal gaurd with undyne who transfered into local authorities Sans left eye glows blue Sans dad Dr W.D Gaster fell into his creation being shattered across time and space Sans mom (Arial) was killed by a human with a gun