The Cacodemon in Doom 3, as compared to the original monster, is taupe in color, has a wider mouth, and has multiple green eyes, as well as some longer, thin tentacles hanging from the bottom of its body. Its brain is clearly visible on the top of its forehead. The Cacodemons are usually found in outdoor areas, although they can be encountered in relatively close-quarter indoor areas, as long as the ceiling is sufficiently high. They often appear in groups of 3 or more and are characterized by a mysterious whirring sound they make when they are present.