Spacers

Self-modified Star People who managed to hide from the Qu in hollowed asteroids.

• Absurdly Huge Population: The Spacers are described as "painfully rare", at a population of "only" 100 billion in several dozen arks spread across the galaxy after the Qu invasion. Keep in mind that beforehand, the population of humans in the galaxy numbered in the trillions.

• Batman Can Breathe in Space: The Spacers can't breathe in space, but their pressurized circulatory and digestive systems make them able to navigate through the void with jets of air from their anuses.

• Creepy Long Fingers: The Spacers develop long, spindly fingers that gradually evolve into the multiple thin, versatile limbs of the Asteromorphs.

• Crippling Overspecialization: The Spacers (and by proxy, their Asteromorph descendants) were so adapted to life in the void of space that it would be impossible for them to return to the planets without dying. Not that they didn't mind returning home, that is.

• Humans Are Survivors: Unlike other human species, who fell to the Qu and had to re-evolve sapience and rebuild their civilization, the ancestors of the Spacers successfully evaded the Qu and never got changed into beasts. They did divert significantly from the human form later on, but it was done out of willing genetic-engineering rather than forced modification.

• Life in Zero G: They heavily adapted themselves for their new home in giant, zero-G air-filled bubbles, developing extremely spindly limbs and digits as well as pressurized guts and circulatory systems (which allowed them to develop a form of jet propulsion in the bargain).

• Space People: The Spacers never set foot planetside again after hiding away in their asteroids, even after the Qu left the galaxy.

• You Can't Go Home Again: It's impossible for them to return to their home planets thanks to their adaptation to the void of space. They can technically go back, but they'll die due to their genetic biology.