The Doom Slayer had been waiting for this day for so long. Everything he had lost, everything he had done to get to this point, every last wretched demon he had torn to veritable shreds with his bare hands, every last self proclaimed god he had turned to pools of blood by his will, everything he had sacrificed...everything that he had loved. It all came down to this.
His gauntlet hands slowly and gradually reached for his helmet, gripping the sides of his headgear, and giving it a twist. A slight hiss blew to the side as the pressure seal was broken, and extricated his helmet from his protective covering. For the first time in eons, he flashed his scarred visage to another physical being. One that he despised deeply. He dropped the accessory by the soles of his boots.
Without his helmet, the Doom Slayer was put to the side. Now stood a man who hailed the feared title behind the headgear:
William Joseph Blazkowicz The Fourth.
William stalked forward.
The Dark Lord breathed heavily, his will to keep fighting siphoned away from the overwhelming strength of his opponent. He raised his weapon, but quickly realized it was deadweight, useless in his hand for what was slowly approaching; for what was inevitable.
"Tell me," Davoth spoke, blood eyes glaring deep into his adversary's. He tossed his mighty sword to the side. "Have you nothing to say to your creator... before you strike him down?"
The Doom Slayer glared back, a scowl forming to his scarred face, lips warped by hatred. He bared his teeth one last time, the arm-blade extending with a harsh screech. The Hell-Walker shot his arm forward and plunged the blade deep into the Dark Lord's chest. Blood and energy spilling forth, and for the first time in countless eons, the armored warrior responded.
"No."
Pulling his arm back, he ripped the blade free. The Dark Lord grunted and his body shook violently; pain flooded his body. The limitless power within him swelled. He tilted his head back and the power of Creation and Destruction raged forth from his orifices, a pillar of infinite energy shooting far into the sky, billowing out as it reached the boundaries of Hell. The Dark Lord fell back, and from his chest rose the First Soul Sphere. Cracked and unstable, it shattered in an intense eruption that spread wide waves of power and influence flowing throughout the multiverse.
In an endless number of dimensions that had been infected by the treacherous demons, the denizens of Hell crumbled. Back in the Sentinel World, man and woman alike cheered the Slayer's banner as the demons that plagued their world turned to ash. On Earth, an imp was about to pounce on a woman and an UAC soldier, but the vile creature vanished in flames. Countless other worlds saw the end of their plight as the demons were erased from the universe.
The Doom Slayer gazed up at the infernal sky, the cold fury in his heart sated for the first time. For eons he had wasted away, slaughtering every last demon he swore to erase out of existence, living for the sole purpose of tearing Hell asunder. Today, he had taken rightful vengeance against the Dark Lord himself, the ultimate source of his pain. His conquest of Jekkad, his quest for revenge was over. The rage within him settled; he felt nothing but an empty void. What was there left for him now that the True Creator, the Father of All was dead?
It's finished.
"..."
The Doom Slayer slowly twitched from side to side as a wave of exhaustion suddenly washed over him, nausea and dizziness overwhelming his senses. His brows furrowed in bewilderment as he fell to his knees, and he gazed down at his gauntlet hands, perplexed. What was happening to him?
"By his hand, all things were made," the Maykr Father's omniscient voice reverberated throughout the Holy Ingmore Sanctum. "... Even you."
It was at that moment, the Slayer began to understand: For eons, his rage was the only thing that had kept him moving forward. Now, without said rage, his body ceased to function. He was an empty shell, a hus that had lost what kept him alive for so long.
In his moment of weakness, he fell over, and his world engulfed in darkness. In his last fleeting moment of consciousness, William eyed the Seraphs that gazed emotionlessly down at him. One Seraph in the middle raised his hand and the long, stone lid slid over him. Darkness descended from all blood red sigil above him, was the one thing illuminating his sarcophagus before closing his eyes.
His perpetual torment was over.
A/N: Welcome young readers to a new Doom x RWBY crossover series called, 'DOOM: Caged Bird.' At this moment, the divine power he wielded and got from the Dark Lord no longer resides in him but even though he's mortal again, he's still an insanely strong human. I'll be writing his interactions with all the characters, slow character development, and more. This will be based on RWBY when the story progresses with more published chapters. With all of that said, I'll be taking my leave. See you in the next chapter!