alright well.
first of all in you were playing a Mage in Origins, let say female mage. You could have noticed some attitude from this particular character to a future female warden. when you meet him during circle incident, this actually may help you bit as well. Given how deep his psychical trauma is at that moment.
His attitude towards the mages was changed forever, but he is also a human being, so some flaws in his judgement also noticeable.
In DA2 we see a very different character, with some warm memories kept at heart, maybe these memories gave him alternative view on a matter of mages. He knows very well how mages can be dangerous, but he is still trying to treat them as humans, and at the same time he is trying to preserve them and all around them from harm. Every time you see him, you may notice these black areas around his eyes. This man is actually in a struggle. So he will perform his duty nevertheless but he will not step over some kind of edge, and you can see it when he is confronting Meredith.
However in DA2 i had a feeling that he is still a filler character, without any power to change the world. When you come to him with information about Anders, his reaction is rather strange. Like "ok i know that this particualr mage Anders is braindead, possessed abomination, i keep my eye on him, but you know i can't do a thing, because by the script he's supposed to blow a Chantry. And guess what? you can't kill him either".
So yes this character is very interesting, also from my point of view he is an examplar of a Templar. It would be nice to see him in the next game and it would be a very nice option to have him as a group member.