Private Jack Mitchell is the main protagonist of Call of Duty: Advanced Warfare. His real name could possibly be either John, James, Jason, or Jacob Mitchell. Mitchell was once a Marine that served with his best friend Will Irons, and Sergeant Cormack when North Korea attacked Seoul. After Will was declared K.I.A. after destroying a North Korean gunship, Will's father, Jonathan Irons, President and CEO of Atlas Corporation, offered Mitchell a job and new left arm.