There are protagonists they're allies of Aslan just like in the books and the movies they're going to be the opposites of our group. Meaning we're not the only humans who've happened upon Narnia. We're not necessarily evil per say but we're definitely not the good guys. It's a sort of anti-hero and villain group vs. the actual hero group. Hero Antagonists vs. Villain protagonists. We are more or less going to be on the 'evil' side be it because of Kersark the Bloodied Influenced us to be that way (you'll see his arguments if this rp is made). More or less think of this as Tywin Lannister's family vs. Robb Stark's Family from the game of thrones.

For example my guy's motivation for becoming king besides the aforementioned? He dislikes what he sees around him and how one sided this has all become. Aslan's will is being forced onto creatures who prefer the winter to the summer and spring. It makes them uncomfortable and they have no say in the matter for the most part. He's more or less going for being the people's champion with a bit of selfishness being thrown in. I clearly can't make the argument that he is doing good seeing as Aslan IS the big good. He is the Anarchy to Aslan's Batman,

http://tvtropes.org/pmwiki/pmwiki.php/Main/HeroAntagonist
http://tvtropes.org/pmwiki/pmwiki.php/Main/VillainProtagonist
http://en.wikipedia.org/wiki/Batman:_Anarky