I really like Coren. To counteract his grumpy and brooding nature, I was thinking of Mara. She's a fellow thief who is vocal about her abrasive thoughts and feelings about others, sarcastic, and just upbeat enough to get on Coren's nerves. I imagine them starting in jail and breaking out together, where Mara decides to tag along. I'm thinking her role would be a bit of a sidekick, helping Coren sort through his baggage and brother issues while providing some witty comic relief but creating some drama.
