Earthling
Damn he’s seen things
Earthlings are the descendants from the long-lost world of Earth. Species of baseline humanoids are renowned for their resilience and drive for improvement. They have spread all across the galaxy, dominating and absorbing species and technology from every discovered corner of the observable universe. Their culture is so extensive and wide-spread, their individual identity may vary wildly between sectors.
Automaton
Not these automatons
Automaton is a blanket term, ranging from androids and service drones to forged machine-creatures. Many remain non-sentient, used as tools, servants, or guardians for the powerful higher class. But over time their design have grown increasingly complex, enough for sentience to emerge, prompting Galactic Law to impose strict limits to the level of intelligence any machine may have, forbidding them from surpassing human-level intelligence.
Synth
As suggested, lol
Synths are a rare specimen of humanoid constructs, designed to imitate other species with unsettling precision. Created by an unknown source, they genuinely believe themselves to be the beings they copy, even if with some mechanical augments. Their numbers are extremely limited, since their free existence is forbidden by Galactic Law.
Drax
Couldn’t find a better pic
A humanoid reptilian species, Draxi are distinguished by their resilience and natural strength. Their origin takes place in a world, ruled by mighty dragon-like creatures. They are often viewed with respect or caution by others, regarding them as warriors or guardians. Their kin values honor and power within oneself.
Custom Species
Although this is a list of available ready-made species at the moment, you can ask me to create a shiny new one. You can also help in creating it, since I’m done with it after 2 custom ones already lol. That is one way of expanding this list.