In "Doom 3", the Marine's appearance is similar to that of his classic "Doom" incarnation as he wears green armor with exposed arms, however the Marine's facial features are not concealed, his muscular build is less exaggerated, and he has black hair. During the game the player can interact with several characters, most of whom, like Sergeant Kelly, give the player some briefing regarding his mission. The player character remains silent throughout and is portrayed as tough and fearless in the game's cut scenes; generally only glaring at the demons he sees. When he discovers the towering Cyberdemon for the game's final battle, however, he steps back in fear.