Sergeant stationed with the Atlantis expedition in the Pegasus Galaxy, assigned to Michael Kenmore. Cole was a part of the team that was instructed to maintain the facade of Michael to the Wraith who had been given that name.
For a large portion of his stay Sergeant Cole was stationed in Michael's vicinity, monitoring him while he ate, sparred, and slept. When Michael learned of his true nature and managed to free himself, Cole, Ronon Dex and another SF gave chase.
Michael cornered him, instructing him to put down his Wraith stunner pistol else he get shot with a Beretta. Cole did not comply, and Michael put four bullets in him, killing him.
Michael - Sergeant Cole is ordered to keep an eye on Michael Kenmore during his recovery, and is eventually forced to hunt him down once he escapes.