Icon of Sin

Appearance: The Real Icon of Sin created by Sergeant Mark IV, is a remake of the Doom 2 Icon of Sin featuring a new Icon of Sin with a body and wings; unlike the original Icon of Sin, this version of Icon of Sin is comparatively a lot bigger, judging how the face which once seemed gigantic, now is a mere face of a demon from a decent angle just as the picture displays. The structure of his body is a combination of metallic joints and exoskeleton which absolutely no skin. He has small mechanical wings oozing out from his back. It may be mistook as his hands as well, by their slender width. The wings are spiky and sharp. You might not want to meet those wings in real life. His shoulder is disguised as a bit brown due to the vest of flesh it wears. His shoulders are spiky too. His arms too are mechanical and have a bony composition. The elbow protrudes out of the disproportionate forearm, while the wrist and hand remain the same: pointy and sharp. As an exoskeletal embodiment, the legs too are disclosed. The crotch bones have something mesh-like fishy between the holes to keep the holes covered. The knees have comparatively bigger spikes with another layer to protect them very well. Followed by the knees, lie his demonic legs. Even though it may look like he would walk towards the player because he has legs, he won't. Its sole purpose is the same: Remain static and attack the player(s). The battle begins when the player approaches an altar with a soulsphere on it in the middle of the arena. This time, the Icon of Sin uses more attacks along with its old ones. He now uses screams that damage players unless they take cover, and he now unleashes lightning that homes in on players and deals massive damage if he hits. Also, the player no longer has to shoot the boss in the head in order to damage him. Instead, headshots simply cause the boss more damage compared to being shot on any other part of the body. The room before the battle is now a hallway with all weapons and ammo, and mega spheres on the left and right sides of the hallway. At the opposite end from where the player begins is a pentagram with a portal behind it which takes the player to the battlefield. The battlefield is now more hellish looking than before and has rockets and plasma cells littered around the map as well as soulspheres which respawn after a certain amount of time, which helps make the battle more manageable. The Icon of Sin perches at the top of a bloodfall. When defeated he sinks back into where he came and more suiting explosions come out of him followed by a massive nuclear explosion before the level ends.

The Icon of Sin is the final boss encountered in Doom II. See this walkthrough for a gameplay description of the boss in its original level. The Icon of Sin appears as a massive, goat-like biomechanical head on a wall, with an exposed brain that allows him to spawn endless scores of demons. Although only his head is visible, the endgame text indicates that the entity has a gigantic body as well. In Doom II, the boss is not referred to by any specific name. The Doom II Official Guide refers to it as the "Dark One" or as Final Boss. He is known in the Final Doom manual introductory stories as "Baphomet" and "demon Gatekeeper". In the text screens of TNT: Evilution and The Plutonia Experiment, he is called demon-spitter and Gatekeeper respectively. The graphic and sound files refer to him by a series of different names: RWDMON ("wall demon"), ZZZFACE ("face" with a prefix for sorting purposes), BBRN ("Boss Brain"), DSBOS ("[Doom sound] Boss"). In 2016, John Romero revealed to a Twitter user that Icon of Sin was the "official" Doom II boss name since 1994. The final boss is not an actual monster in the technical sense, since it doesn't count towards the monster kills percentage at the end of a level, and is not affected by the command line parameters that affect standard monsters. Additionally, monsters are a single Doom thing, but the final boss is made up of a number of things:

• Romero's Head is the thing that must be destroyed. It starts with 250 hit points, but it is hard to hit due to its location deep in a hole in the boss's head, therefore it can only be damaged and killed by the blast radius of a rocket when playing levels that put the monster in the original location behind the wall. However, modern source ports allow for aiming freely and so can allow direct hits with any weapon. Also it spawns rockets that instantly explode due to an invisible wall that is also summoned on death;

• A monster spawner in front of the head launches spawn cubes;

• Several spawn spots are located around the map. These are where the skull adorned cubes land and spawn a monster.

Wall textures ZZZFACE1 through ZZZFACE9 are arranged to construct a demon face with a hole into its brain. This is what the player sees as the boss, but it has little to do with its functioning.