Dr. Archimedes was a Tau'ri scientist from Greece, and a member of the Atlantis expedition, who was known to have worked in Atlantis in 2008. He is known to be infatuated with Teyla Emmagan. After Dr. Rodney McKay mentioned Archimedes' name, Lt. Colonel John Sheppard thought that he meant the expedition member, where in fact McKay mentioned the Ancient Greek mathematician of the same name, Archimedes. (SGA: "Broken Ties")