SHODAN (Sentient Hyper-Optimized Data Access Network) is a fictional artificial intelligence and the main antagonist of the cyberpunk-horror themed video games System Shock and System Shock 2.
SHODAN has a god complex and a malevolent demeanor. Created as the AI for TriOptimum Corporation's Citadel Station, SHODAN is hacked, causing her to go rogue, take control of the station, and turn the staff into mutants and cyborgs. Voiced by Terri Brosius, SHODAN is known for her chaotic, discordant voice and manipulative nature. The character has been well-received by gaming media, often considered one of the top video game villains and one of the best female characters in gaming. SHODAN has been compared to other famous AI characters, like HAL 9000 from 2001: A Space Odyssey and GLaDOS from Portal, and praised for her unforgettable personality and omnipresent, threatening nature.

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