Group 935

Group 935 is an international scientific research group featured in the Aether story of Treyarch's Zombies mode. Group 935 first appeared in Call of Duty: World at War and several maps take place in Group 935's facilities and sites throughout Call of Duty: Black Ops, Call of Duty: Black Ops II, Call of Duty: Black Ops III, and Call of Duty: Black Ops 4.