Two years after I wrote this post, Uduqu’s still here, still pursuing his dream to be the first Abnak to write a book (or read one, for that matter).
I can only speak for myself, but this is one of the most fun things about writing fiction: the way characters walk into the story for just a page or two, and the next thing you know, they stay! You should see what Redegger the vice boss gets up to in His Mercy Endureth Forever. And I knew no better than Lord Chutt what Zeriah was going to do after she was elected Judge of Obann.
I think the unexpected is a sign that you’ve made your characters real.