From Halopedia, the Halo wiki
Admiral Gabriela Castenada was a renowned flag officer of the UNSC Navy, best known for her service during the Insurrection in the late 25th century. She was one of the more profound voices advocating for diplomacy before the civil war, but proved to be an impressive tactician and leader during the war. Her efforts led to many lives being saved in what was otherwise a devastating conflict.
Shortly after Gabriela Castenadas death, her brain was used as the basis for the creation of the "smart" artificial intelligence Gabriela, the AI assigned to UNSC Promise of Dawn during the Human-Covenant War; and later Outpost Discovery, created in the later years after the war. Admiral Castenada's record is available to the public.
Personality and traits
Gabriela Castenada was an inspiring leader, fearless warrior, and skilled diplomat, though she maintained a dry sense of humor. She was highly esteemed by those under her charge for her unwavering confidence in their abilities and potential. Although she advocated diplomacy during the Insurrection, she nevertheless proved to be an impressive tactician and wise leader.
List of appearances