Abaddon (Earth-4001)

Abaddon was a powerful Precursor construct tasked to serve as the overseer of the Domain. By the latter years of the Forerunner civilization, Abaddon's nature had been forgotten by most Forerunners and it had passed into legend as the Organon, a fabled Precursor artifact of incredible power.

History
The history of the Organon is the same as its mainstream counterpart.

Powers
As a Precursor intelligence, Abaddon was an incredibly powerful entity. It was capable of vaporizing physical beings at will, and could effortlessly interface with Forerunner technology, such as access their communications or personal armor. It could also create organic versions of mechanical constructs, like Promethean Crawlers or Aggressor Sentinels.

Trivia

 * Abaddon is Hebrew for "destroyer" or "destruction" and is also the name of an angel or demon in the Bible