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Archer is a member of Radio Liberty. For reasons the group refused to divulge, he was in the foothills of a world when he came across a crashed protoss ship. He brought back a protoss data system, which the group analyzed and distributed.
When Radio Liberty began investigating the disappearance of Terran Dominion ghosts, their headquarters were raided by a group of masked intruders. Archer and Mel were taken by the group. After the Defenders of Man Insurgency, the two remained missing.