Dalek Time Squad

The Dalek Time Squad was an elite battalion of Time-Sensitive Daleks deployed by the Golden Emperor to attempt to exploit the "fluctuations in History" caused by the Tenth Doctor travelling back to the Dark Times and getting involved with the Kotturuh, (PROSE: The Guide to the Dark Times) which rewrote the Daleks to have been fighting a losing war against the Hond instead of having fought in the Last Great Time War. (COMIC: Defender of the Daleks)

The Time Squad contained five individual members: the Time Commander, the ancient Dalek Prime Strategist, a Scientist Dalek and the Dalek Executioner. Time-sensitive silver Dalek drones of the "basic model" were assigned to the Squad and were not supposed to think for themselves, although Melody Malone suspected otherwise. (PROSE: The Guide to the Dark Times)

At some point, they invaded the planet, Velosia, assuming the façade of helping the Velosians fight off the Kotturuh, only to murder the best and brightest Velosians, and leave the surviving few on Velosia to await the Kotturuh. (COMIC: Tales of the Dark Times)