Gabriel is the main antagonist and narrative protagonist of ULTRAKILL. He carries out the will of the Council with a ruthless efficiency that brings him both fear and respect. He is known as the Will of God and is among the most powerful of all the angels. When he was defeated by V1 for the first time in Gluttony, the Council believed him to have squandered his power and cut him off from the light of The Father. Cut off from the light Gabriel would be dead within 24 hours, so the Council told him prove his devotion by finding and killing V1 before he died. After he was defeated by the machine a second time in Heresy, he returned to Heaven and killed every member of the Council, realizing the atrocities he had committed on their behalf in the name of an absentee God.

