Endurance-of-Will (Earth-4001)

Endurance-of-Will, often referred to simply as Endurance, was a Promethean Warrior-Servant. She was a former lover of the Ur-Didact before his marriage to the Librarian and served as his top lieutenant during the endgame of the Forerunner-Flood war.

History
The history of Endurance-of-Will is the same as her mainstream counterpart up until the end of the Human-Covenant War in 2553.

Personality & Traits
The Librarian remembered Endurance as honorable and sensitive, and because of this, she believed Endurance could yet be convinced to help her stop the Ur-Didact. Underneath her façade of strict adherence to the Promethean code and in spite of her deep resentment of the Librarian, she was shown to be ultimately rational, never truly agreeing with the Didact's genocidal scheme. Despite this, she still deeply respected the Ur-Didact.