He's a martial artist too. But I guess that's about it. Oh, his skin, or mass is slightly more durable from dealing with so many g forces. So that will add a little kick to his offense and defence,  but not so much that he'd be classed as super strong or impenetrable or anything. He'd be susceptible to a lot of different ways of damage etc. I plan to use the speed thing as a joke as much as an awesome idea to manipulate in this universe. Tell you what, I'll post my character sheet tomorrow and you can tell me what you think about it.