I feel odd responding to this before Rth, but I've always had Thoughts about Edmund and Scariness, and so your comment intrigued me. It's interesting, because on the one hand, in my headcanon at least, Edmund is this incredibly compassionate, moral, forgiving person - as seems only right for being the Just king. But, on the other hand, there's the idea of Justice being blind, impartial, and more than a little ruthless. So he's also Scary, in the sense that he knows how to keep his fingers on everything going on in Narnia and out of it, and use that information to his advantage. Also, Justice is usually the dispenser of retribution, in whatever form it takes, and that can be a scary thing. (And yes, retribution can be just, and usually should be. It is not excessive - in other words, where Edmund is concerned, I don't confuse retribution and vengeance. Here's a quick definition of the former: Punishment that is considered to be morally right and fully deserved.) But, retribution can be scary, depending on the magnitude of the original offense.

And now I owe both you and Rth apologies, because you were asking her and not me, and it's her story and her headcanon after all. But consider me an interested participant in this particular question?