- You may be looking for the Seventh Doctor's companion, Chris Cwej.
The Cwejen were a race of duplicates of Chris Cwej created by his Superiors, the Great Houses, to serve them in the Totality. (PROSE: The Book of the War, A Bright White Crack) Originall
Nature
Most Cwejen took one of three forms: the original, blond, and handsome "Cwej-Prime"; the shorter, overweight, dark-haired "Cwej-Plus"; and the monstrous and heavily-armoured "Cwej-Magnus". (PROSE: The Book of the War)
Some Cwejen did not retain the conscious memories of their progenitor, but they were affected by his memories on an unconscious level. (AUDIO: The Adventure of the Diogenes Damsel) When asked of his past, Abschrift refused to directly state he came from Earth, saying it was "a matter for philosophers" and admitting that he originally had. (PROSE: Warlords of Utopia) As happened with Damen, it was possible for a Cwej to be allowed to keep most of the original's memories. (PROSE: The Book of the War)
History
During the War
The Cwejen were created by House Military during the War in Heaven through the Army of One technique. The original Chris Cwej was planned to lead the Army, but his behavior at the Gauntlet was considered too erratic and Damen was instead appointed chief commander. (PROSE: The Book of the War)
Among the Cwejen who did not have any of Chris' memories, there was a shared legend of the "pale god" called "Mister Seven", whom some worshipped with Cyberman-like fervour. Some Cwejen who aided the Time Lord Straxus on a mission to 19th century Earth went mad because of their form of worship. One of the Cwejen, who adopted the name Septimus from a human, began committing strange crimes themed with the number seven in an attempt to draw the attention of their god. Following Bernice Summerfield and Mycroft Holmes' confrontation with Septimus, he was taken by Straxus' past self to be dissected to find the genetic problem that caused his "malfunction". (AUDIO: The Adventure of the Diogenes Damsel)
One Cwej, Abschrift, was tasked by House Mirraflex with aiding the Greater German Reich. (PROSE: Warlords of Utopia)
Some House Military strategists derogatorily referred to the Cwejen as the "Little House of Cwejes". (PROSE: The Book of the War)
Age of Cwej-V
The Superiors once sent a troop of Cwejen to Dawn 1027 with plans to invade it. (PROSE: A Bright White Crack)
City of the Saved
In the City of the Saved, some Cwejen grouped to form the community Cwejentown. (PROSE: God Encompasses) Cwejen Security, of which Omicron Cwej and Sherman "the Tank" Cwej were part of, were hired as bouncers for Handramit's reception party at the Watchtower. (PROSE: Of the City of the Saved...)
