Force-sensitive at an early age, a rarity among Chiss people, it was instilled into him by his parents and those within his clan that it was seen as a disgrace, urged to keep it suppressed through medical stims. He'd develop a dependence on these stims, whether it was on a biological level or a mental one, needing to keep his disgraceful "mutation" hidden away from the surface.

(Betrayal 20) Talus betrayed the previous crew he was with, leaving them out to dry on Korriban during a heist gone awry. The original intention being to "liberate" a few Sith relics from the planet and getting out unscathed, the job went belly-up quick and left him with the opportunity to save himself, which he gladly took. Unbeknownst to Talus, the job was a ploy by a Sith Empire operative to lure Republic sympathizers in.