Scotty

Scotty was a maintenance technician assigned to Mars City Underground. He was under the supervision of R. Fry. On the day of the demonic invasion, Scotty was working in a vent in the Energy Stabilization Unit, trying to replace a power coupling. When the Player walks through this area the first time, he can hear Scotty arguing with Fry.

Scotty and Fry are killed by an Imp during the demonic invasion. When the Player returns to the Energy Stabilization Unit, Scotty's dying screams are heard coming from the vent. If the Player looks into the vent, the Imp (presumably the one responsible for killing Scotty) will crawl out and attack the Player.

Trivia

 * Scotty may be a reference to the character of "Scotty" from Star Trek.