Replicator Carter

Replicator Carter AKA Replicator Sam or Replicator Sam Carter is a Human-Form Replicator created in the image of SG-1 member, Major/Lieutenant Colonel Samantha Carter.

She is portrayed by British-born Canadian actress Amanda Tapping who also plays the original Sam Carter.

Biography
After releasing the original Samantha Carter from captivity, having realized that he would never be able to have a relationship with her, the Replicator Fifth used the memories and knowledge he had collected from Carter's imprisonment to create an exact Replicator copy of Carter herself, one Fifth hoped would love him with Replicator Carter making her own debut appearance in the last few seconds of the Stargate SG-1 Season 8 episode, "New Order Part 2".

Several days or months after her creation, Replicator Carter was forced to undergo an intense training program in which she lived out various scenarios of her killing her original self's colleagues in cold blood. These scenarios played out over and over again, repeating in a never-ending loop.

Eventually, the scenarios caused Replicator Carter herself to become a killing machine deprived of any mercy, remorse or guilt and over time, Replicator Carter herself grew to despise Fifth just as much as her original self had to such an extent Replicator Carter began planning to achieve her own means of power.

She later contacted Stargate Command during "Gemini" and opted to work on the Replicator disruptor, a weapon capable of destroying all the Replicators with her original human self. As this happen, Replicator Carter secretly communicated with Fifth but in the end, it was later revealed that Replicator Carter had been manipulating both sides from the beginning.

She fired the Replicator disruptor satellite at Fifth and his ship, the sheer of the weapon destroying both in mere seconds before she immunized herself and her race, essentially preventing them from suffering the same fate. She also fought Teal'c and despite the SGC's best efforts, Replicator Carter eventually escaped the Alpha Site.

In the aftermath of Fifth's death, Replicator Carter subsequently took over the vacant position, eventually gaining full control of the entire Replicator race.