A member of Martin Lloyd's race, Peter Tanner was greatly responsible for maintaining Martin's altered state of mind -- that all of his past knowledge regarding his alien existence was but a figment of his imagination.

Tanner is associated with a small group of men, with whom he and Martin used to serve as soldiers in their planet's military. When the Goa'uld invaded their world they were sent to seek allies. Finding Earth but realizing we weren't advanced enough to help them, they deserted and hid out here. Tanner and the others believed that they would surely die if they returned home, and drugged Martin to block his memories of his true identity so that he would not expose them.

Tanner operated as a psychiatrist in Montana, covertly observing Martin under the guise of treating him, helping Martin to maintain his false memories. But after SG-1 exposed them, they went into hiding again and were staunchly pursued by the N.I.D.

They decided to leave Earth when their ship returned on an automated timer. Martin, however, was content to remain behind on Earth.

DETAILS

PLAYED BY - Robert Lewis
FIRST APPEARED - Point of No Return

KEY EPISODES

Point of No Return - Tanner's covert cover as a psychiatric physician is exposed when SG-1 investigates Tanner's "patient," Martin Lloyd.
Wormhole X-Treme! - Tanner and his men leave Earth aboard their advanced space vessel, having narrowly avoided capture by the N.I.D.