Ka Faraq Gatri
From Tardis Wiki, the free Doctor Who reference
The Daleks referred to the the Doctor by the name Ka Faraq Gatri or the Bringer of Darkness or Destroyer of Worlds.
- By implication, the name Destroyer of Worlds refers to the Doctor's destruction of the Dalek home planet Skaro in his seventh incarnation. However, as eary as his second incarnation the Doctor knew that the Daleks had given him this name. (DWM: Bringer of Darkness)
Behind the Scenes
The name was first mentioned in the novelisation of Remembrance of the Daleks. It was picked up upon later in Timewyrm: Revelation, where the Doctor feels guilt at the destruction of Skaro. It had frequent mentions subsequently.