If they are voiced over i hope there are some that are friendly or somewhat friendly.
I think that Todd said dragons are nasty foul creatures that just want to kill and destroy things which is why we will never fly on them because it they would never let it happen.
That being said, I think for such a creature that a deep evil voice should be used, not a highly intelligent type, just my opinion.
Christopher Lee
EDIT: ^and there goes the budget for the entire game, same with Morgan Freeman
Who do you think would ask for more? Christopher Lee or Charlie Sheen? I know Charlie would never be a good dragon, or well any fantasy characters voice, but who do you think would ask for bigger bucks? I think Charlie would, seems that he is one greedy SOB considering he makes like what? 2mill for each episode of 2 and a half men that he does....