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The Cosmic Silverback is the boss monster in the “Dead Ops Arcade” minigame of ‘’Call of Duty: Black Ops’’, and a a playable skin in Call of Duty: Black Ops 4 and Call of Duty: Mobile. He is a giant zombie gorilla in a Soviet space suit, who will appear in-game to steal the treasure and as the final boss.
The Cosmic Silverback was once a gorilla who was sent to space by the Soviet Union in 1962, and returned to Earth as a zombie.
Dead Ops Arcade
Throughout the game, the Cosmic Silverback appears after completing certain rounds to steal the leftover treasure on the screen, and is fought as the final boss on Round 40, only to reappear immediately afterward and punch the player back to Round 1. On the Game Over screen, he appears to steal all the player’s treasure. The description for ‘’Dead Ops Arcade’’ on the game’s menu screen implies that the Cosmic Silverback is the leader of all the zombies appearing in the mode.
Dead Ops Arcade 2
In "Dead Ops Arcade 2: Cyber's Avenging", Cosmic's brother, Cyber and presumably his other siblings, mourn his death. Cyber then decides to get revenge on the player by stealing their chicken to avenge Cosmic, but the player kills Cyber.
- The Cosmic Silverback is one of the only actual boss creatures in the Call of Duty series. Obviously due to the realistic nature of the game the Zombies mode is the only place where a Boss could realistically be featured. The Pentagon Thief and George A. Romero are also bosses.
- The DLC Zombie level “Ascension” features “normal” undead Russian space monkeys, which obviously are related to the Cosmic Silverback story-wise.