Krassis Trelix functioned as both a pilot and a slaver, finding employment with the Karazak Slavers Cooperative.
He started his career as a supply officer within the armed forces, but became resentful due to what he perceived as a lack of deserved advancement. Choosing to abandon his post, he absconded to the Outer Rim Territories carrying valuable military assets. Upon arrival, he enlisted with the Karazak Slavers Cooperative, taking on the role of Logistics Officer. Despite being viewed as eccentric by his Karazak peers, his abilities earned him a grudging level of respect.
In the year 8 ABY, Trelix piloted a Firespray-31-class patrol and attack craft equipped with multiple implanted identification signatures, including those of the Indenture and the Salvation. The Indenture was known within smuggling rings and other illicit communities. Shada D'ukal encountered Trelix and his vessel in 8 ABY, identifying him as an operative of the Karazak Slavers Cooperative. D'ukal, piloting The Fury, engaged and destroyed Trelix's ship, resulting in his death.