Q: Is it true that characters from the hit Disney film “Frozen” are coming to “Once Upon a Time”? Judging by the tease from this season’s finale, I’d say yes. — Steff S. in Florida A: That is indeed true, Steff. Characters loosely based on Kristoff, Anna and Queen Elsa — who will be played by Scott Michael Foster (“Greek”), newcomer Elizabeth Lail and Georgina Haig (“Fringe,” “Reckless”), respectively — will cool their heels in Storybrooke, Maine, in season four of ABC’s red-hot fantasy/drama series.