From Halopedia, the Halo wiki
During the Requiem Campaign, he was assigned to Galileo Base. At some point he wanted to use power from the defense turrets to run a mini-reactor. Despite Dr. Owen telling him not to, he went ahead with it anyway. When the Covenant attacked Galileo Base, the turrets were left offline, leaving the base open to attack. After Crimson cleared the base, Dr. Alexander questioned who turned off the reactor. Commander Palmer informed them they had priority. He then informed them if the reactor wasn't turned back on soon its shielding would fail and destroy Galileo base, forcing Crimson to turn it back on.
He is voiced by Didact.who also voiced the
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