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Ortus is a named Promethean Knight.
Knight Ortus spawns in certain Warzone Firefight simulations, usually guarded by four Soldier Guards, and carries a LightRifle and a Scattershot into battle. Occasionally, he spawns as a Mythic Boss with a group of three other named Knights, Bellator, Praeliator and Sectator, with the Mythic version a Heartseeker and a Didact's Signet into battle, and will switch between both weapons depending on the situation. The four Knights are collectively known as the Harbingers.
- When a player is killed by the Mythic variant of Ortus, his name shows up as Knight Asphyxia.