OFF-WORLD Peoples Human's who are still adapted for the home world are referred to as Earthlings and they are still the dominant race. Your character can be Human or one of the following sub-species:
MARTIANS
The people of Mars have developed many markers that make them distinct form their adaption to the red planet. They are taller and leaner than the average Earthling and generally have traits which appear to be Asian. Their skin is generally darker and bears an orange or bronze tone while their eyes tend to be either green or orange (more commonly orange). These traits have developed more so because of physiologically changes carrying with them certain markers that tend to alter a person's appearance through the generations.
Because of the weaker gravity, Martians will be weaker than Earthling Humans.
MEDEANS (People of the Moon Ganymede)
These people are distinct because they for some reason developed traits to distinguish themselves from Earthlings even though they have no real physiological differences. All of them, however, have irises which are shade of purple and their sclera also have a lighter form of the same colour.
Both Martians and Medeans will have other traits that will distinguish them from Earthlings so feel free to invent some more if it comes up during a story.
These are the only two distinct peoples, but due to the extensive genetic manipulation that people undergo every year, your character can have whatever odd features or abilities you can dream up.SIMULACRUM
Biological, self thinking robots that after six years begin to develop their own emotional responses that will supersede their basic programming, which is why after that age they are either retired or outlawed in various colonies. This race is not off limits but realize that it is very restrictive.
Simularcrum are faster, stronger and more durable than Humans. Depending on their model, they may also be far more intelligent. When they are made, they are often given distinctive facial features and even oddly coloured eyes and hair to make them stand out.
Cybernetic Enhancements ('JACK' or 'Cyborg')
Genetic manipulation and Cybernetic transplants have become common place in society. In order to protect the public, cybernetic body parts are regulated with tamper proof governors to prevent heightened strength that can be used in acts of crime. People learn who illegally by pass the governors and perform black market implants are called 'Boosters' and those who use the enhanced cybernetics are known as 'Jacks'.
If you so choose your character can have cybernetic body parts but be aware that if they are enhanced they are illegal.