Okay, I've thought it over carefully, based on everything I know, and I think I've figured out who Mario is. I mean, I'm not SURE, but it adds up pretty well. I've wondered if I should reveal it, because you might not like to know. But hey, I could be wrong--it's only a theory. So, anyway, just based on bits and pieces, I'm pretty sure Mario is Mark Mandel. I know some people think Kragar is Mario, but it seems obvious to me that Felix is Kragar. Of course, I might be wrong about that, too.