Combat gene-stock with +1 STR, +1 CON, -2 CHA, infravision, and melee damage bonus.
The Thrax are a combat and labour gene-stock engineered by Helix military biotechs during the long expansion. Their designers wanted bodies that would not break and minds that would not question. The programme succeeded on the first count and failed on the second. Descendants of those early frames now live as free populations, carrying immense physical power and a deep cultural suspicion of the institutions that still catalogue their bodies as products.