Promethean

"Oh, but what I would not give to have even a single company of Prometheans here right now... oh, they would most certainly restore order with their trademark lethality..."

- 343 Guilty Spark musing to himself as his Installation is about to be destroyed.

The Prometheans were the highest and most respected group of Warrior-Servants in the Forerunner ecumene. The Didact, the Confirmer, the Grammarian and the Strategos were Prometheans.

Physically, Prometheans were the highest form a Warrior-Servant could mutate to, standing around two times the height of a Manipular and weighing about four or five times a Manipular's mass. They were heavily muscled, their hands capable of easily crushing a human. Their mental capabilities were also very sophisticated; it was common for a Promethean to share information and sensory input with the warriors under their command. Like Warrior-Servants in general, the Prometheans were capable of controlling a million remote-controlled craft, such as weapon-ships, simultaneously.

The Prometheans were responsible for creating "Warrior Keeps" known as Cryptums, where an exiled warrior could live in suspended animation for thousands of years. Prometheans were also known to employ various kinds of war machines in battle, including Knights, Watchers, and Crawlers.

History
Following the human-Forerunner wars and the discovery of the Flood, the Prometheans, under the leadership of the Didact, stood in opposition to the radical faction of Builders led by Master Builder Faber, who proposed the construction of the Halo Array. They lost the political battle, and were subsequently removed from the Ecumene Council.

Approximately five years after the end of the Human-Covenant War, John-117 and Cortana, drifting aboard the wreckage of the, came across the Forerunner world of Requiem, where they faced hostile Promethean defense constructs.

Trivia

 * The name "Promethean" was probably inspired by the Titan Prometheus in Greek mythology, who gave the gift of fire to mankind. However, there is no in-universe relation between the names, as the Forerunners predated the Greeks by well over 100,000 years.
 * "Promethean" was one of the names Doctor Halsey considered for the SPARTAN-II Program.

List of appearances

 * Halo: Combat Evolved Anniversary
 * Terminals
 * The Forerunner Saga
 * Halo: Cryptum
 * Halo: Primordium
 * Halo 4