Riddick cut in, forgetting the progress he'd made on his sandwich for the moment. He was rather disconcerted at what Haku had just said, but hoped it didn't show too much as he addressed the boy.

"If it weren't for you... either or both of us could be dead."

He distinctly remembered the nightmarish hell he'd been going through until Haku's frigid touch had brought him back to reality. And at that point, the battle certainly hadn't been going well. If anything... Riddick himself was the one at fault for getting Haku mangled. But that was just one of the things bugging him right now.