[@Weird Tales] Unbreakable bones eh? I have to say I have the I have the same concerns as the others. Outside of unbreakable bones, without a healing factor like Wolverine, or some sort of other enhancements the bones or kind of silly. 

If you're going to pursue the concept, I definitely recommend beefing him up some more with a few additional perks. Maybe some bone manipulation abilities, able to grow chitinous armor or something?