There is something different about Khellus in this book. He has a genuine interest in his family and empire, he makes an effort to shield the Great Ordeal from the nuke and its effects, his desire for angry revenge toward Zeyeum, and his vulnerability to Saubon and Proyas in the matter of faith are downright human. To not speak of other desires with the whole rape thing...
Oh wait, he is Dunyain. He calculated everything out, including the madness that is going to effect the The Great Ordeal (sending an assassin to kill the leader of a country tends to have negative consequences, unless it's to mobilize an army to defend against a No God worshiping Sranc eaters, if his rape victim fails in bringing them to heel and destroying to Consult...correct me if I am wrong, Zayeum has the only school remaining in Earwa right?). Not to mention his own madness from investing Sranc. Cnaiur is the one wildcard, but not much of one, seeing as how Acca met up with him, which, judging by everything else Acca has done, was more or less preordained.
I think we are seeing Khellus as he is seen by world born men: a sympathic character who reveals enough through his words and actions to win our trust. He's a bigger monster than ever (then again, so are the gods).