This page lists appearances of the Dominators and their robotic servants, the Quarks, in the order in which they experienced them. This timeline is based upon observations of the Doctor Who universe and the events that occur during each of these stories.
- A Dominator incursion on Earth is fought off by Alistair Gordon Lethbridge-Stewart.
- The Second Doctor thwarts an attempt by independent Quarks to conquer Earth using his Martha robots.
- A Dominator incursion on Earth is fought off by UNIT.
- The Second Doctor faces the Quarks on Hekton, the site of a small human colony.
- The Quarks fail to assassinate the Second Doctor on Earth.
- The Doctor and Jamie face the Quarks on an unidentified Earth-like planet.