John Greer
Decima's director of operations and Samaritan's champion.
John Greer, played by John Nolan, is a former British Army officer and MI6 agent who runs operations for the private intelligence firm Decima Technologies in Person of Interest. He sets out to destroy the Machine with a rival artificial intelligence, Samaritan.
Quick Facts
- Portrayed by
- John Nolan
- Organisation
- Decima Technologies
- Background
- British Army, MI6
- Died
- ".exe" (season 5)
Facts from the source article.
Background
He is the main villain from the second half of season 3 to the end of the series. He secretly founded Vigilance and staged an attack in its name so that the government would activate Samaritan. In the penultimate episode, ".exe", he seals himself and Finch in a room and has Samaritan remove the air to stop the Ice-9 virus; Greer dies, but the Machine saves Finch with help from Reese and Shaw. In the season 5 episode "6,741", one of the thousands of simulations Samaritan runs on Shaw, she finds a scar on Greer's arm and cuts out a USB drive holding code that Arthur Claypool wrote as a kill switch for Samaritan; left alone with her, Greer taunts her that it was her own idea to put it there and that it is really a kill switch for the Machine.
Source
Text adapted from John Greer on the Person of Interest Wiki (Fandom, CC BY-SA 3.0). Page history: contributors. Codexery summarised the page, and this entry is shared under the same licence.
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