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A skeptical augmented investigator whose access to Murderbot's log exposes its freedom but also helps reveal HubSystem's manipulation.
Dr. Gurathin uses the temporarily immobilized Murderbot and HubSystem to inspect anomalies in its internal log. He correctly identifies the hacked governor module and the record that Murderbot killed fifty-seven mining-operation clients, but initially interprets both as proof that the SecUnit may be sabotaging PreservationAux. He remains the loudest advocate for keeping it restrained.
Murderbot demonstrates that HubSystem lied about its immobilization by pinning Gurathin without hurting him, then argues the system deliberately exposed its secret to isolate it. Gurathin joins Pin-Lee in shutting HubSystem down, checking the hoppers for unauthorized access, and finding the external command channel that controlled the missing reports and autopilot failure. He evacuates with the team but remains cautious of Murderbot.
An augmented human man of unspecified features and build, in practical habitat and field clothing, with an implanted interface that gives him direct systems access.
Gurathin is a valuable technical investigator whose justified fear and mistrust make him Murderbot's sharpest internal critic.