Glenn is a former service member of the United States military. He is stated to be a high-ranking general. He has served in many armed conflicts, including the Vietnam War, the Second Gulf War, and the Kosovo War. At an unknown point in his life, he married a woman named Dolores and had a daughter with her, but their marriage didn't last long. During his employment in Cognito, Inc., he allowed Andre Lee to perform a surgery on him that turned him into a dolphin-human super soldier.