Tyrain came from a relatively poor mining Colony and started working on planet-side drilling platforms there at the Age of 16. He moved onto fire control (dealing with drill fires at mining stations) and eventually was promoted to a similar role on transport ships.
Long hours and hard work earned him a reputation until he was headhunted for work on a military fire control team. It’s better pay but even worse hours. He always wears a special safety suit that provides a measure of security for airlock/hull blowouts.
Tyrian looks and sounds tired. He is rarely fazed by anything, whether facing a gaping vacuum or a raging inferno, but approaches it all without energy. He approaches life the same way.