This can lead to many destructive events, all of which benefit them on conquering worlds. The demons with their presence bring their reality with them, 'hellifying' the environment. Summoning, Large Size (Type 2), Reality Warping (Passive. In Doom Eternal, it is born from the tortured spirit of the Betrayer's son and a Titan before Maykr augmentation.
Although only its head is visible, the endgame text indicates that the entity has a gigantic body as well. In Doom 2, it appears as a massive, goat-like biomechanical head on a wall, with a surgically exposed brain that allows it to spawn endless scores of demons. Red (Doom Eternal), white (Doom 2) The Icon of Sin is the final boss and is encountered in Doom 2 and Doom Eternal.
