Jack Frost is a very interesting character.
In a way, he seems like Puck's polar opposite. Serious. Upfront. Honest. He isn't flashy like Puck, but subdued in a rather regal appearance fitting to his description of the Winter queens loyal right hand.
Of course it's yet to be seen if he's that ways with mortals. But he does seem like he can be rather intimidating with them if he so choses. Great page Darc!