All Grown Up
Was looking through pictures and was rather shocked at the startling change in Colin from 2008 to now. Here:
BTS Season One (scene from 1X13 where Nimueh hits Merlin in the chest with the fireball)
Cold Con, November 2012
Now, of course I knew he'd grown and changed a bit, but it really does seem to be rather drastic for only four years, don't you think? Rawr...