- For the primary universe counterpart, see Redjac.
In the mirror universe, Redjac was a malevolent, immortal entity responsible for history's most infamous murders. He was also known as Beratis, Kesla, and Jack the Ripper.
By the 2260s, Redjac possessed John Hengist, the administrator of Rigel III, and committed several murders, hiding the bodies in a series of shallow graves in a national park near Rigel III's capital. After investigators connected Hengist to the shallow graves, he confessed and told them about his possession, revealing that the entity had also been responsible for the killing sprees of Redjac, Beratis, Kesla, and Jack the Ripper. A fascinated public subsequently made him a celebrity and the Emperor granted him a rare license to kill. (Decipher RPG module: Through a Glass, Darkly)
- In the novel "The Sorrows of Empire", it was stated that Montgomery Scott was accused of the brutal murders of three women on Argelius II in 2267, although Captain Kirk ensured that the charges disappeared almost immediately. As in the primary universe, the murders were presumably committed by Redjac while in control of Scott's body.