Samuel Hayden

General Hayden is the commandant of the UAC space marine garrison in the Doom 3 novels. Hayden is opposed to Swann and Campbell's investigation of the Mars facility, warning them that Betruger won't let them pull the plug on his operation. He was slated to appear as a secondary antagonist in Doom 3, but was cut from the game, making Betruger the main antagonist.