I think the most unexpected thing for me was his sense of humour. I mean, pre-release all we really heard about him was that he was mad about the Fade and that he thought that morality was more complicated than good and evil. We heard all about Bull's humour and Sera's and Dorian's. Someone even asked PW on twitter whether Solas was sarcastic like Dorian was, to which he replied that he wasn't as overt about it, but he'd say something that you'd realize was an insult maybe half an hour later. So after that I was expecting him to be all polite all the time. I was not in a million years expecting him to be as snarky as he is. I think Solas gets some of the best zingers in the game, really. Especially when talking to Viv.
Hee! 100% agree. I don't get much opportunity to stick them together (3 mages is a bit much) but when I can it's delicious. They're so good at getting under each others' skin. I particularly love these:
Viv: "So! An apostate."
Solas: "That is correct, enchanter. I did not train in your Circle."
Viv: "Well, dear, I hope you can take care of yourself should we encounter anything outside your experience."
Solas: "I will try, in my own fumbling way, to learn from how you helped seal the rifts at Haven. Ah! Wait. My memory misleads me. You were not there."
Viv: "Solas, darling. If you wish instruction in proper magical attacks, do let me know."
Solas: "I will. Perhaps you could direct me to a Circle mage who does not frontload her barriers."
Solas: "Tell me, enchanter: do you even bother to explore the Fade in your dreams?"
Viv: "I prefer to explore the world I actually live in."
Solas: "A pity. You could be much more powerful if you ventured outside your narrow preconceptions."
Viv: "Ah, the temptation to leave the path. You sound like a Pride demon."
Solas: "Enchanter. Any Pride demon you met would just walk away, shaking its head and laughing uncontrollably."
Viv: "Oh, darling- more than one already has."