A human-form Replicator created by First, the first human Replicator created by the technological species using cell-sized Replicator blocks. The Replicators modeled the human form as the next step in their evolution on the human-made android Reese, who originally created the spider-form Replicators to be toys. Fifth was the only Replicator in the human-form series in which the programming flaw discovered in Reese was corrected -- which made him more human, more fallible, and in the eyes of his more militant brethren, weak. Fifth immediately took to Major Samantha Carter, and at her request agreed to help SG-1 trap the Replicators in an Asgard-made time-dilation prison, surrounding the entire planet with a field that slowed down time to a fraction of its normal rate. He himself would escape with the team on board the Prometheus. When Colonel O'Neill learned of the plan, he secretly ordered Carter to set the time-dilation device so that Fifth did not have time to escape with them. Fifth discovered this only seconds before the device activated, realizing he had been betrayed by Carter and that the first humans he had ever met had used his own humanity against him. Nearly two years later in real time, the Replicators managed to disable the device. They escaped an Asgard-created black hole meant to destroy them permanently, and Fifth commanded a ship to the last Asgard colony, on the planet Orilla -- after capturing Major Carter. Enraged by her betrayal and experiencing negative human emotions for the first time, Fifth tortured her on board his ship. The Asgard destroyed the vessel as it arrived at their planet, but Fifth and Carter survived, and the Replicators created a base on the planet's surface. After further manipulating her, Fifth was convinced to let go of his hatred and release her -- only to escape the planet and create a human-form Replicator in Carter's image, to be his companion in conquering the galaxy. The two of them planned to use her to approach Stargate Command and learn more about the Asgard's new disruptor weapon, which was able to easily destroy Replicators. Carter's duplicate asked for their help in destroying her, and claimed that Fifth had already found a way to counter the weapon. She agreed to help SG-1 find a way to counter his adaptation, but in truth she was learning how to defend herself from the weapon. When Fifth approached the planet, she betrayed him and used an Asgard disruptor satellite in orbit to obliterate Fifth and his ship -- so that she can rule the galaxy herself. PLAYED BY - Patrick Currie FIRST APPEARED - Unnatural Selection
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