Bornstellar Makes Eternal Lasting (Earth-2042)

The IsoDidact, also known simply as the Didact or more specifically as the Bornstellar Didact, was a male Force-sensitive Forerunner and an alternate incarnation of the Forerunner Promethean supreme commander known as the Didact. Originally a young Manipular known as Bornstellar Makes Eternal Lasting or simply Bornstellar, he was transformed into a "copy" of the Didact after being imprinted with the latter's consciousness and memories, taking on the original Didact's identity and role of supreme commander of Forerunner war efforts against the Flood in the ongoing Forerunner-Flood War.

Source

 * https://www.halopedia.org/IsoDidact