Wtf this is absurd! Don't mean to be rude but he's broken AF. The only way anyone would stand a chance is if they didn't have a weapon, and even then you say you can summon other things so wtf! The concepts cool, but having a ridiculous copy ability (that allows you to wield it BETTER THAN THE OWNER) and having next to no weakness...
I'd say he's above average.
Maybe try making to so that he doesn't use the weapon better than the owner and they have a time limit. That's a start. Perhaps he can use every weapon from any RHG but only use each weapon once (but let's face it that's not much considering the number of weapons). It's a start. I can't come up with anything else yet.
Your page layout is so incredibly simple and I love it. So simple, yet so effective. It's neat and organized and I don't really see anything wrong with it other than a couple grammar mistakes. Though I would recommend putting the "Other" section simplified into your abilities section.
Good luck fighting