http://breezewiki.catsarchywsyuss6jdxlypsw5dc7owd5u5tr6bujxb7o6xw2hipqehyd.onion/undertale/wiki/Sans
According to Alphys in an aborted Genocide Route , she is forced to rule the Underground and Sans helps her lead; she calls Sans "a good guy". [ 44 ] W. D. Gaster A few things hint at a connection between Sans and W. D. Gaster . Evidence includes the blueprints and veiled machine found in his workshop, the sprites used for his skull-like laser guns (labeled gasterblaster in the game files), and his unexplained scientific research on the "anomaly" and timelines.