I have a race I used from time to time called the Valkyrii. They're clones, always female, produced inside cloning units called "Mothers", accelerated to a biological age of 16 (expected life span of 60 years). Each comes out trained to be an infantry soldier. They're also uniquely telepathic in that they can only communicate with one-another. Only a few are born each cycle able to reach an alien mind through touch-contact. For other races, it's like listening to static when they try to mentally communicate with a Valkyrii. They also have a small pair of wings on their back, utterly useless in anything over 33% of standard gravity. The planet is poor, so their only exports are mercenary units and Zero-G construction battalions. When they're older, having completed their service requirements, may ask for the right to fly (explore). Biologically, they're very close to Human (standard), and can eat rations safe for humans. TravelRation and Searres Human rations are fine.