Mark Lamia

Mark Lamia was one of the maintenance workers in Doom 3. According to the audio log on his PDA, he states that he is frustrated on his employees for their incompetence. He states that his employees constantly forget things and he has to keep an eye on them while they're working. He even changed the code for the security lockers to 1-2-3, since he believed that that would be easier to remember, yet his employees forgot. It's likely that he had died from the demonic invasion.

Triva

 * By the sound of his voice, he may have been raised in (or his ancestors were raised in) Russia, or possible surrounding countries.
 * His name might be in referance to an employee that worked for Activision when it aquired the publishing rights for classic Doom.