Warden Eternal

The Warden Eternal is a Forerunner Promethean AI and the keeper of The Domain and its secrets.

Biography
In 2558, during the Battle of Sunaion, the Warden Eternal was guarding a Guardian construct which contained John-117. When Fireteam Osiris attempted to assault the Guardian the Warden Eternal appeared before them and incapacitated them with his Hard light sword. The Warden Eternal then picked up Spartan Locke and told him the Master Chief was granted access to the nearby Guardian but Locke and his team were not.

Appearances

 * Halo 5: Guardians