Gabriel Ruiz was a U.S. Marine and B.P.R.D. field agent in 1947.
Gabriel Ruiz enlisted in the United States Marines Corps and becoming a Marine Raider in the Pacific Theater of the Second World War. Because of his Hispanic background, Ruiz was racially discriminated in which he tried and failed to sue the Marines for discrimination. After the war, Ruiz refused to retire from service and was subsequently transferred to the B.P.R.D.