Quick pass to figure out where I want to go with the main lighting:
Then rendering Hal's face to a dim neutral ambient light (and fix his mask so it has the nosepiece):
Still more to render on his face. I wiped out the forehead hair temporarily to try to get the forehead rendered accurately. The face will change a lot when I go back and light it up. I'll also add a light from directly above and behind, not sure what color yet.