Replicator Carter

"Her thoughts, her memories, even her emotions -- they are not meaningless to me."

- Replicator Carter talking about Samantha Carter to Daniel Jackson

Replicator Carter, also known as Replicator Sam, was a Human Form Replicator created by another human form replicator known as Fifth in the image of Samantha Carter. She eventually proved to be a major threat to life in the Milky Way and other galaxies. .

Identity
Notably, the only time that Replicator Carter, is named on the show is when Daniel Jackson calls her by that name in a descriptive fashion. Because human-form Replicators have traditionally been named by the order of their creation, and as the human-form Replicator destroyed in the same episode was called "Eighth" in the ending credits, her actual name might be "Ninth". A trailer for the upcoming Stargate Online Trading Card Game however, lists her name as Replicator Carter.

Origin and Creation
Like other human-form Replicators, and standard Replicators for that matter, Replicator Carter was constructed from the conjoinment of a large number of identical Replicator "blocks". Human-form Replicators, as their name suggests, take perfect human form, and are composed of much smaller blocks (i.e. nanites) than standard Replicators.

She was made in the real Carter's image, even down to memory and character. This information was probably collected during Carter's imprisonment by Fifth on Orilla. However, the differences between Samantha Carter and Replicator Carter have become quite pronounced due to Fifth's training of the latter, resulting in Replicator Carter becoming a megalomaniac, ruthless, dominating conqueror. She also believed that these traits were also within the original Samantha Carter, as "all humans desire power". According to Replicator Carter, the only difference between the two is that Samantha never had the bravery, or means, to act upon it.

Replicator Carter, like other human-form Replicators, is invulnerable to both projectile and energy weaponry. She possesses the ability to reform herself at any time, not only to heal herself but also to shape her arm into a weapon like a long sword, with which to kill enemies. She can also deactivate portions of herself, effectively enabling her to leave parts of her body behind. Replicator Carter is also connected to the Replicator data-stream called "The Link".

After the android Reese was used as bait by the Asgard to trap all Replicators in the known universe inside a time dilation field, the advanced technology, including the nanites within Reese's systems, were studied by the approaching Replicators. Based upon these nanites, the first human-form Replicator could be constructed. However, Reese's programming was flawed, which was also discovered by the Replicators, who attempted to correct the error in the creation of Fifth.

As a result, Fifth was both the first and the last human-form Replicator created with the capacity for emotion, as the others came to see the feature as a flaw. This led to Fifth falling in love with Samantha Carter, and when he realized he could not have a relationship with her in the form he desired, he created a perfect replica of her intended to accept him.

Fifth intended for Replicator Carter to govern the Replicator race with him, and to be his consort. Due to his infatuation with Samantha, he made her exactly in her image, down to her memories and character. However, this in part led to her despising what he was trying to do as much as the original Samantha Carter would have.

Plot
After Colonel Jack O'Neill had engineered a weapon able to disintegrate any Replicator in its blast-radius (the Replicator Disruptor) based upon Ancient knowledge, the Replicators' quest to control the Galaxy had reached a dead end. In the meantime, Replicator Carter was able to fool Fifth into believing that she was loyal to him, and maybe even shared his love. The two eventually devised a plan to discover how to immunize their race from the Replicator Disruptor.

The plan involved sending Replicator Carter to the SGC, claiming that she had betrayed and fled Fifth, and expressing a wish to be destroyed by their Disruptor. SG-1 took her to the Alpha Site to question her, where she informed them (untruthfully) that Fifth had immunized every single Replicator to the Disruptor, except her due to his spite. However, she promised to help them realign the Disruptor to overcome Fifth's immunization.

As they began work on the Disruptor, Replicator Carter was able to study the weapon to discover how to immunize her race from it. She relayed reports of her progress back to Fifth, keeping in communication with him via the data-stream between all Replicators. Unbeknown to the SGC and SG-1, Fifth was tracking her position, on his way with one of his powerful Replicator ships to attack the planet, confident Replicator Carter would upload the cipher to render the Disruptor useless before he arrived.

However, Replicator Carter eventually betrayed Fifth by firing the Replicator Disruptor at his ship before she uploaded the cipher. Both he and his ship were destroyed, before Replicator Carter immunized herself and her race. Teal'c attempted to stop Replicator Carter by grabbing her arm, but the arm detached from her body and she escaped via the Alpha Site's Stargate. Carter's attempt to violate General O'Neill's orders to terminate Replicator Carter was a major factor in her escape. The arm removed by Teal'c decomposed into deactivated cells which are studied by Carter, who felt responsible for her Doppelgänger's victory.

Replicator Carter subsequently took over Fifth's position, gaining full control of the entire Replicator race.

Galactic Conquest
Several months later, Replicator Carter led her army back to the Milky Way, and launched a massive attack on the Goa'uld, taking over their territories and incorporating their technology into her own. She first paid a visit to a summit of System Lords gathered there and began killing all of attendees of the meeting. Amongst those who were killed were Lord Yu and his first prime Oshu, Ba'al's representative with her Jaffa and two Kull warriors, and two unidentified Goa'uld with their own first primes.

Knowing of the ascended knowledge still present in Daniel Jackson's subconscious mind, information that could possibly be a threat to her invasion, Replicator Carter captured her original self's teammate: Daniel Jackson and tricked his mind into believing she was Oma Desala again offering ascension. He thereby opened his mind to her, revealing things that he wasn't aware of, including a weapon capable of killing her and the other replicators. After hours of probing his mind, Replicator Carter discovered the weapon was situated on the planet Dakara known as the: Dakara Superweapon, a device that, when altered, could be used to destroy her entire army at once.

However, the Replicator invasion, seen by many Jaffa as holy retribution for their blasphemy against their Gods, proved not only to be disastrous for the Goa'uld, but also caused many rebelling Jaffa to revert to their old religion. Teal'c and Bra'tac, along with many Free Jaffa, subsequently attempted to take over the Temple at Dakara, an act that they believed would prove to all Jaffa that the Goa'uld are not gods.

Replicator Carter sent her forces to Dakara to eradicate the weapon, engaging the Jaffa rebels and Ba'al's fleet, who had turned his fleet on Dakara to drive out the Rebel Jaffa. However, Samantha Carter had also discovered the weapon, and recognized it as the only thing capable of destroying the Replicators, since it was based upon the same technology as the Replicator disruptor.

Demise
The Replicators eventually landed on Dakara and attempted to reach the weapon. In the meantime, Daniel, whilst allowing Replicator Carter to enter his mind, was able to work his way into her mind and entered in a mental duel with her, and was able to momentarily freeze every single Replicator in the galaxy, including those on Dakara and those invading the SGC, using some of the Knowledge of the Ancients that she helped unlock. However, she regained control of the Replicators soon afterward, and explained to Daniel that his mind was simply not capable of controlling all of the Replicators at will, even though he had the knowledge to do so. Recognizing Daniel to be a threat, Replicator Carter ceased probing Daniel's mind and immediately killed him by stabbing him through the heart. Daniel later returned with help from The Others).

With Daniel's distraction, Samantha Carter, with the help of Jacob Carter/Selmak and Ba'al, were able to reconfigure and program the weapon to send out massive shockwaves that would cause only the Replicators to permanently disassemble. These waves were spread over throughout the entire galaxy via every working Stargate, destroying all Replicators in the Milky Way Galaxy, including Replicator Carter. All Replicator Carter could do was look on in horror as she and her ship were destroyed by the weapon.

Personality
Despite being modelled on the original Samatha Carter, Replicator Carter is completely different from her original human twin in terms of personality. She is the exact opposite of the human Carter in a sense that she is ruthless and is also driven by the need for power as well as a strong desire to rule the entire Milky Way galaxy.

She also is merciless, sparing no guilt for killing any of her victims including Daniel Jackson, Lord Yu and her creator, Fifth which may make her out to be a psychopath. She is also willing to go to the limit to get what she wants even if it means slaughtering thousands in the process and also subjects her victims to torture or deceit to require the information she needs.

Behind the scenes
Replicator Carter is commonly known as RepliCarter amongst fans, though this name has never been used in the Stargate universe officially.