Asexual (male personality)
Leader of the Replicators
|Out of universe information|
- "That one's different."
- —Jonas Quinn
First created him as an attempt to fix the problems Reese had suffered with emotional development, but he was considered a failure. He was the only one of the 6 Replicators that had moral objections on probing the humans minds, an opinion that the others considered to be a flaw. He was promised by Major Samantha Carter to be taken from the planet when the planet was to be frozen in time, but Colonel Jack O'Neill thought otherwise. When the team left the planet, all but O'Neill had some moral issues with this action. (SG1: "Unnatural Selection")
Fifth was able to escape Hala with other Replicators using the time dilation device, and managed to capture Major Samantha Carter, who is aboard Thor's ship. He proceeded to torture Carter, by showing horrific images from her past. He refused to show mercy, claiming that he's "not there yet". However, once he saw how much pain he was causing Carter, he relented. He then created a dream world in Carter's mind, where he impersonated Pete Shanahan. However, Carter saw through it and Fifth gave up, leaving Carter on Orilla where she was eventually rescued by her team. Fifth then used the information he had collected during Carter's imprisonment to create a Replicator copy of her. (SG1: "New Order, Part 1", "New Order, Part 2").
Fifth then sent Replicator Carter to the Milky Way, in hopes of learning about the Replicator disruptor that Colonel Jack O'Neill created with the Ancient's knowledge. Replicator Carter, however, betrayed Fifth, using a Replicator disruptor satellite on his ship which in turn led to Fifth's eventual destruction and death. Following Fifth's death, Replicator Carter soon became the new leader of the entire Replicator race up until her own destruction several months at the hands of the Dakara superweapon. (SG1: "Gemini")