[He knows he's being too eager, he's just relieved this didn't turn into a fight. Plus, he's hoping his eagerness will convince Sigma to stop seeing him as a potential threat. He does enjoy the hand to his head, though.]

I can't... [And his hair does make him easily recognizable.] But I can come up with a reason. I'm getting work experience here as a favor, before I start applying to jobs in the city.