Josh O'Conner (as Prince Charles) Totally Deserved His Emmy
He is so very good (and so perfectly hateable) in this role.
It's not just that his look and voice are such a perfect match, it's the posture, the pained expressions, and the constant undercurrent of being ill at ease with most people.
Of all the fine performances in Seasons 3 & 4, his is the standout.