Finally I decided to make some concepts for my story "Solace" that being in development

He and his brother has been turned immortal as a part of Confederation's great plan to expand and conquer home galaxy. Unlike his brother that took lead in this idea, he rebelled and now trying to stop it. There's a lot of things that gets in his way, one of them is immortality itself that he considered a curse. In short, he's got a courage but lacks in meaning

Probably not the final look if you ask, but I'll probably draw his nemesis firs, oh and figure their names ofc xD