Courtland “Court” Gentry: The Gray Man, code name Violator — freelance assassin/contract agent for the Central Intelligence Agency
Matthew Hanley: Director of the National Clandestine Service, Central Intelligence Agency
Suzanne Brewer: Officer, National Clandestine Service, Central Intelligence Agency
Fan Jiang: Chief Sergeant Class 3, cyber intrusion specialist, People’s Liberation Army, Unit 61398 (Red Cell Detachment), 2nd Bureau, General Staff Department (3rd Department)
Dai Longhai: Colonel, department director of security and counterintelligence, People’s Liberation Army, 2nd Bureau, General Staff Department (3rd Department)
Xi: Major, counterintelligence officer, People’s Liberation Army, 2nd Bureau, General Staff Department (3rd Department)
Sir Donald Fitzroy: Director and CEO of Cheltenham Security Services; former handler of Court Gentry
Zoya Feodorovich Zakharova: Code name Banshee — officer, Russian Foreign Intelligence Service (SVR)
Oleg Utkin: Code name Fantom — officer, Russian Foreign Intelligence Service (SVR)
Vasily: “Anna One” — paramilitary officer and team leader, Russian Foreign Intelligence Service (SVR), Zaslon (Shield) Unit
Tu Van Duc: Leader of Con Ho Hoang Da (the Wild Tigers), Vietnam-based criminal organization
Bui Ton Tan: Officer, Vietnam People’s Police and employee of Con Ho Hoang Da
Kulap Chamroon: Co-leader of the Chamroon Syndicate, Thailand-based transnational criminal syndicate
Nattapong Chamroon: Brother of Kulap, co-leader of the Chamroon Syndicate, Thailand-based transnational criminal syndicate
Song Julong: Major and security officer, People’s Liberation Army, People’s Republic of China