It had been 5 years since the Master Chief had been rescued from cryo-sleep. It had actually been a complete accident when a Covenant cruiser entered the near-isolated system. They would have run over him too if not for a small ping on their ship's luminary. The device would have actually been disconnected long ago if not for the desire to see if they're any Forerunner installations that contained Flood. The luminary had picked up and showed the symbol for A.I.
The ship's engineers carefully managed to bring the Chief into brief conciseness. This answered the biggest question humanity had: Was the Chief alive? The ship had quickly entered into Slipstream and headed to a nearby human world as the entire crew knew nothing about how cryo worked. The Chief had been placed in the hospital for a long time before being sent into the field.
The ship that had contained the Chief had been placed in a secure UNSC complex. The purpose of this was to revive Cortana, who was in a form of "hibernation". She had mentally shut down everything in order to delay rampancy. Now she remains dormant.
On the gas giant that houses Installation 01 there is an altered Forerunner gas mine. It was long ago turned into a sort of prison for Flood brain-forms. However, centuries of growing and the death of the Delta Halo Gravemind had resulted in…"changes". Now the Gravemind waits for the day a sentient race entered his prison chamber. His wait is now over.
His height was that of a teenager. His cloak and hood were covered in red gird-like lines. His body was humanoid in shape and detail. But his skin was a sort of pitch-black and purple mix. It looked as if it were fading from one shade of color to the next. It looked as though he was made of energy. He approached the entrance to the gas mine's inner levels from the landing pad. The sentinels that guarded the entrance took notice to their programming to not let any sentient beings enter and quickly charged their lasers to fire. Their limited A.I.s took a moment of surprise as they were batted aside and crushed by an unseen force. The sentinel units seemed to have been surrounded in a wave of heat before they were knocked aside as the figure approached.
Minutes later he was at the gate to the quarantine zone. He placed his hand to the holo- pad and pushed. The gate opened and infection forms poured out. As they rushed at him they hit what seemed to be a sphere of energy that surrounded the figure. The boy smiled.
"Hello Gravemind. I am Omega. Black Omega. Now I have something I want to tell you. You will listen. And you will obey."
Please review. Also "Black Omega" is one of my original characters. I imagine him similar to YuGiOh GX's yubel in his energy form but in a shade of black and purple.