Araqiel

Summary
Colonel James Ackerson's private AI. Ariquel was a third generation "smart" AI, he protected all of Ackerson's files and ONI information. Araquiel was tasked to spy on Dr. Catherine Halsey and her research. He was decompiled by Halsey after he attempted to stop her from breaking into Ackerson's private data files after The Battle of Reach. Normally such an action would render severe punishment. However, at the time Dr. Halsey and Kalmiya were all that were left in CASTLE Base because of the battle and subsequent evacuation of the facility. Furthermore, he claimed to have taken control of the air reclamation system for her medical wing. This was a threat to Halsey, because Araquiel could vent toxic gases into or pressurize her office to either incapacitate or kill her.

His appearance was that of a dragon-like humanoid composed of crystal shards. He had horns, jagged razor-like teeth, and large fiery eyes.