Talk:Sans/@comment-27316276-20151129184155/@comment-27044455-20151129203108

I think that Sans is one of the two persons adressed by Gasted in his unnusued conversation. The other? Alphys.

Both Sans and Alphys are the only monters with a scientific background. It's pretty probably that they worked with Gaster until he died/disappears/whatever happened to him. This explain why Alphys and Sans seems to know each other from long time. And why the skeleton brother appeared in Snowdin coming out from nowhere: I think that they moved there after Sans lost his job with Gaster.