Doom Slayer

"Against all the evil that Hell can conjure, all the wickedness that mankind can produce, we will send unto them... only you. Rip and tear, until it is done."

- King Novik to the Doom Slayer.

The Doom Slayer, originally known as Doomguy, is a futuristic marine that is never specifically referred to by name. He is one of the Earth's toughest and mightiest warriors who single-handedly fights against the armies of Hell.

Overview
He is the most feared entity to all of Hell, even the Devil, the Dark Lord, along with the Archdemons, Princes, Kings and Generals are terrified of him because of his unending crusade against the slaves of the Doomed, bent on their annihilation. Even Ayin, the creator of Hell, is fearful of his rage. His crusade has sent him to numerous dimensions, worlds and universes, and many know his name, with even Angels and Gods being weary of him. In addition, he is the only being who is respected by the Arcuthas, due to their shared hatred towards Hell, having even fought alongside their leader Calur once.

After his third battle with the Legions of Hell, he entered Hell and closed the gateway to the that universe in hopes that his Earth will be saved, at the cost of the Doom Slayer having to fight demons for eternity.

He still carries around hind rabbit's foot made from his rabbit Daisy.

Countless centuries later, and through enormous levels of training and battle, he has grown much stronger to the point where even the strongest demons in existence fear him as "The Doom Slayer". Where he yet again fights to save another Post-Apocalyptic world.

Powers and Abilities
Though it is only told by demonic recordings, the Doom Slayer had managed to kill Hell's Champion 'the Titan', indicating how he became the most feared being to all of Hell's Legions.

Origins
Once a normal human man who was a marine for the UAC security, it is said that he was descended from William Joseph "B.J." Blazkowicz who fought in both World Wars and took out the Nazi Regime.

First Battle
Doomguy has been incarcerated on Mars after assaulting a senior officer when ordered to fire upon civilians. There, he works alongside the Union Aerospace Corporation (UAC), a multi-planetary conglomerate and military contractor performing secret experiments on interdimensional travel. Recently, the teleportation has shown signs of anomalies and instability, but the research continues nonetheless.

Suddenly, something goes wrong and creatures from Hell swarm out of the teleportation gates on Deimos and Phobos. A defensive response from base security fails to halt the invasion, and the bases are quickly overrun by monsters; all personnel are killed or turned into zombies.

Stationed on Phobos, he found himself force to fight off against demons on the moon, followed by Deimos and even in Hell itself.

Hell on Earth
Eventually he managed to return to Earth, only to find the demons invading the planet, millions dead, including his pet rabbit Daisy. Losing the last source of happiness in his life, the marine swore vengeance against all of Hell, eventually pushing the demons back and defeating Baphomet, the leader of the invasion force.

Following this, and possibly other outbreaks he was part of, he was decommissioned. Some years later, he was called upon again to return to Phobos through a planetary space station when a powerful demon, known as the Mother Demon, began raising an army to re-invade. After defeating it, the marine decided to remain in hell, determined to ensure that the demons can never return and threaten his Earth. Some time later, the Mother's sister, Resurrector, appeared to take revenge she teleported him back to Earth to try and kill him. But he fought his way back to Hell again, chased the sister down, and defeated her. Again he chose to remain in hell.

Argenta
Eventually the marine was found by the humanoid alien race known as the Argentas and their godly allies the Maykrs, and while initially seen as an outsider, the Slayer earned the respect of the Night Sentinels to be eventually counted among them.

When the demons invaded Argent D'Nur, the Slayer was at the front-lines, slaughtering all demons in his path. Seeing his indomitable will, Samur Maykr, Seraphim and Chancellor of the Khan Maykr, bestowed the power of Argent Energy through the Maykrs' Divinity Machine onto the Slayer, combining Eldritch, Divine and Demonic energies.

This in turn granted him immense strength and speed as well as being unable to age and take the power of those he kills, making him more than a man, close to a god, a unique being never seen before. Armed with this new power and the first Crucible Weapon, along with the Praetor Suit that had been modified with powerful runes by the demon known as the Wretch, the Doom Slayer slew the demonic Titan that threatened the city of Taras Nabad, beginning his legend as the Slayer.

Unholy War
Since then, the Doom Slayer led the Night Sentinels against the demons in what was known as the Unholy War. They made several incursions into Hell and gained numerous victories. In one said battle, the Slayer faced against Al'Diabolos, severely wounding the Great Evil and installing fear into the Lord of Terror for the first time.

But eventually, the Night Sentinels had discovered that the Maykrs, their supposed Gods, had made a secret pact with the Dark Lord, Davoth, to siphon souls with Wraith Magic to create Argent Energy to preserve themselves and their world, Urdak, what the Sentinels had originally called 'Elixir'. Even when this was revealed, the people of Argent were too enthralled by the powers of Argent Energy. This led to a Civil War, with the loyalists under the Sentinel Royalty using the power of the Elemental Wraiths to fight back against their traitor brothers and the demons. With the Doom Slayer beside them, they were invincible.

Betrayal
However, they eventually lost due to betrayal. One of their own, Commander Valen who had trained the Slayer in the Night Sentinels' art of war, lead the treacherous Deag Grav, once a holy man and now a Hell Priest, towards the Sepulcher of Elements, where the Elemental Wraiths resided for the return of his dead son. From there, Grav absorbed their power and soul into a demonic crucible, taking away the loyalists' advantage.

In return, Grav brought back Valen's fallen son as the new Icon of Sin. In addition, the other two Deags, Ranak and Nilox, tricked King Novik into sending the Slayer and their strongest warriors into Hell to destroy the Soul Chamber at Nekravol, before trapping these warriors in Hell. All except the Doom Slayer met their end, but not before slaughtering many demons in the process. Argent D'Nur and the suriving populace then fell under the oppressive rule of the Maykrs, who continued to allow Hell to invade other worlds in return for Argent Energy to keep their world and themselves thriving. The Doom Slayer, now back in hell, continued his one-man crusade against the demons, but now mistrusting of those who are deemed holy too.

Aftermath
Since then, the Doom Slayer has been to numerous universes, fighting demons, protecting worlds and even facing against other threats. Some threats include the machinations of the Old Ones in their bid to break free from their prison, while others were Evil Gods such as Angra Mainyu and even the the Scarlet King surprising most beings.

All encounters left a deep impact on those who meet the Doom Slayer, some were left in awe, horror or fear of this indomitable demigod and his prowess. Some had even tried to use him as a pawn, only to be crushed by the Slayer. His movements are always watched by the angel Remph, who assisted by helping the Slayer move to the various multiverse whenever a world was in danger by the demons.

The Angel of Death Azrael, who was responsible for guiding the souls of the deceased, is revealed to have been the unknown contractor with Samur Maykr and also bestowed the power of death and destruction onto the Slayer. His reasons being twofold: the Doom Slayer would slay the demons and free the imprison innocent souls, allowing them to ascend to Heaven.

The second reason is because Azrael prophesies that the Doom Slayer will play a major part in the Final Conflict. Thus, he will finally purge Hell, allowing the new Creation to be free of sin.

Trivia

 * It is said that he will come to judge Lucifer, despite the Morning Star having been allowed to return to Heaven.

Image Sources

 * (Doom slayer color by christianwillett ddp5ps3-fullview.jpg) Doom Slayer color by ChristianWillett
 * (Doom slayer by lucc4rt de83yge-fullview.jpg) Doom slayer by Lucc4rt
 * (Doom Slayer.png) Doom Slayer by Octahedron0
 * (Doom slayer by ruvkun dd79ddk-fullview.jpg) Doom Slayer by RuVKun
 * (The doom slayer by doublezeroafarina ddswylc-fullview.jpg) The DOOM Slayer by DoubleZeroAFarina
 * (The Slayer.png) The Slayer by KelvinHiu
 * (Doom Slayer and Weapons.jpg) doom slayer by tis1451
 * (Doom Fanart.png) DOOM fanart by geedert
 * (Impugnatione daemonum by vamkiretrannel de9qdty-fullview.jpg) Impugnatione Daemonum by VamkireTrannel
 * (Doomslayer by heinaevaara dbwumnp-fullview.jpg) DoomSlayer by Heinaevaara
 * (Chaingun by scrivnasst deio5iw-fullview.jpg) Chaingun!! by scrivnasst
 * (Doom Slayer VS Cyberdemon.png) Doom Slayer VS Cyberdemon by KelvinHiu
 * (Andrew-wong-dxd-1.jpg) D v D - DOOM x DIABLO fanart by Andrew Wong