At least two more "Frozen" characters are set to join the fourth season of ABC's "Once Upon a Time" following the reveal of Queen Elsa in the third season finale.
Newcomer Elizabeth Lail will play Anna, Elsa's younger sister, whilst Scott Michael Foster ("Greek," "The River") has landed the recurring role of Anna's beau Kristoff. Still remaining to be cast is Elsa herself who has only been seen from behind.
Once's version of Anna is described as "a fun-loving, fearless optimist who often gets herself into situations where she is in over her head, yet is able to triumph due to her resourcefulness and can-do spirit. She values her relationship with her sister Elsa above all else."
Kristoff is "a hearty, salt-of-the-earth ice cutter whose sometimes-gruff demeanor can hide his deep love for Anna and her sister Elsa. When we first meet him on Once, he is adjusting to life at the castle - including sleeping indoors for the first time in his life."
Source: TV Line