Frederick King

Frederick King, also known as Agent One and Codename: UNO was a member of the ORION Project's Trident Team in the late 25th Century and an influential figure within the Office of Naval Intelligence for most of his adult life. King was a long-serving ONI agent, in addition to being the first recruit and field commander of Project BRUTUS upon it's creation. Throughout the Human-Covenant War he worked on a number of clandestine operations, including the recruitment of orphaned children to become soldiers for the SPARTAN-III Program and the destruction of several independent Human groups working outside of the UNSC's control. While King never held a particularly high rank within ONI and did not go for a position of leadership when he had the chance, he remained as a key figure in the intelligence world and was considered an indispensable asset due to his experience and position as head of BRUTUS. In spite of his advanced age, King would continue to take part in missions well into the 2570s and underwent further augmentation during this period.

Personality
"That man is pure evil."

- Marion Hollister