Also, thanks for pointing out I didn't say what the stats did. I actually went back through the thread because I thought I had. My bad, I'll explain it.
First I guess I should say that you will only make stat checks for things that matter or are difficult. Mundane or impossible feats will just be automatically be successful or fail respectively. I'm doing the best I can below to explain it, but if it feels like something was left out feel free to say.
>BODY
Essentially it's Strength+Vitality/Endurance. Basically any straining physical activity will call for a body check. Note that just because you pass a body check doesn't necessarily mean you'll be able to do superhuman things like break boulders. Emerald is just a simple colt, after all.
Awareness of surroundings, the ability to pick up on social ques, and for searching.
>INTELLIGENCE
The ability to apply knowledge or deal with logic problems. Not to spoil anything, but Unfortunate Runaway is actually rather well learned. It might be useful later.
>WILLPOWER
Basically the ability to resist control (whether by well placed words or magic) and the ability to resist strong emotional impulses (like Frustration). Also, if Emerald is made to try and do something outside his personality he may get a willpower check to not do it. That isn't to say that with a failed willpower check you can get Emerald to do whatever you want. He has to at least want to do the action a little bit. He won't for instance, throw himself off a cliff or charge headfirst at a dragon wielding only a stick.