Dominator

The Dominators are an extragalactic sapient species which looks externally similar to Humans (or Time Lords), descended from the male half of another humanoid species. They are notable as ruthless conquerors who travel in saucer-shaped vessels which can be powered by radiation; take over planets with the help of their army of robotic Quark servants and enslave species which they find suitable (those which are sufficiently resilient physically but not too intelligent so they would have a better chance of obeying commands without questioning). At an unspecified point in time they had control over much of the region known as the Ten Galaxies. No information is known about which galaxies constituted this empire, other than the fact that the Phi-Ralix Galaxy was one of them, or even the period of time the Dominators' government over them lasted.

Biology
Dominators are descended from another humanoid species, modified into their current forms. Physically, they resemble Humans, but stand at over 2.5 meters tall, with red-lined green eyes, pale skin, and dark hair. In addition, their skin has been augmented to be far tougher than that of their more human-like ancestors, and their need for food has been removed, with their bodies able to absorb radiation to gain energy, a trait that extended their lifespans to several centuries. Most notably, while they are descended from a dioecious species, Dominators have augmented themselves into a distinct all-male species lacking the capability for sexual reproduction, instead reproducing through parthenogenesis. Their many augmentations made them a far stronger species, but also limited their speed and mobility, although Dominators are still capable of running.