Former special forces soldier implanted with an experimental neural chip to enhance mental capabilities. The program causes severe side effects, including memory loss and fatal consequences upon removal. After going rogue and killing several guards, he hacks the agency system to activate other test subjects and seeks revenge. His true identity is later revealed to be Sarah, who was brainwashed into believing she is John. He ultimately has his chip destroyed and is left in a brain-dead state.
Dr. Cain is the lead scientist who implanted and monitors John's experimental chip.
Jane initially appears as an ally but is actually an undercover operative.
Alex is a hostile agent sent to eliminate or capture John.
Ketrov is a high-value target eliminated through John's activated network.
Han represents the failed history of the same chip program.
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