Warrior-Servant

Warrior-Servants were a caste in Forerunner society. During the Forerunner-Human War, they piloted War Sphinxes into battle. A particular group of Warrior-Servants known as the Prometheans created "Warrior Keeps" known as Cryptums, the nature of which was unknown to most Forerunners.

List of appearances

 * Halo: Cryptum