Ryzak solar system

The Ryzak solar system was a star system that, as reported by the Aristotle, had significant Dalek activity. The Aristotle stayed hidden in an asteroid belt in the system (PROSE: The Secret Lives of Monsters) until a Dalek by the nickname of "Rusty" leaked their location to a Dalek flying saucer. After seeing the Twelfth Doctor's hate of the Daleks, Rusty betrayed his kind and destroyed the Daleks invading the Aristotle. Rusty then transmitted a retreat signal to call the saucer away. (TV: Into the Dalek)