The Human body consists of a torso, a head, and four limbs: Two arms and two legs. The galactic average height for an adult human male is about 5'7" (172 cm), while the average for an adult human female is about 5'2" (158 cm). Humans are a bipedal species, with a plantigrade leg structure and no tails.

While the entirety of the human race has not adopted forms of cybernetic and genetic augmentation, it can be a common sight in some cultures. The Sol Empire, for example, is well known for using cybernetics to replace amputated or disabled limbs and organs. This practice has also started to bleed into the Republic of Sion, through the link provided by the Sol-Lassi Tribe. There are even rumors of genetic experimentation in the more isolated Sionian tribes, though nobody, not even the Republic Council, has verified this.

Other cultures such as the Arshans and Terrans, are far more conflicted about augmentations. For the Terrans, many believe you lose a part of yourself and your humanity, while others see it as the next step forward in Human evolution. The Arshans, however, consider both cybernetics and genetic manipulation to be a federal crime following old policies enacted for reasons long forgotten.

Despite this, however, the Arshans are known for a form of selective population control: Infants found to have defects, disabilities, and other potentially debilitating deformities are euthanized. While the Arshans view this as a merciful act, believing that it would be cruel to allow such a person to live in a community they cannot contribute to, the Solus are quick to point this out as inhumane and "evil" in their propaganda.