Warden Eternal

The Warden Eternal is a Forerunner Promethean construct that considers itself the "keeper of the Domain and her secrets". During the Battle of Sunaion, the Warden was encountered by Fireteam Osiris and incapacitated them in battle with a hardlight blade. It then informed Spartan Jameson Locke that John-117 had been granted access to a nearby Guardian, though such permission was denied to Locke and his team.

Overview
The Warden Eternal has a tall and humanoid mechanical armature segmented to numerous disparate components that are not physically connected. Like the Promethean Knights, it has a "face" with a glowing skull inside. Warden Eternal wields a unique hardlight blade, that sports two blades as opposed to the usual single blade the Promethean Knights use. It is seemingly capable of immobilizing opponents with constraint fields.

List of appearances

 * Halo 5: Guardians