Now, for the first time, Frozen's cast is taking cameras behind the scenes of their production, showing how the reindeer "Sven" is brought ... the puppet known as Olaf. That is on top of the ...

Fearless optimist Anna teams up with rugged mountain man Kristoff and his loyal reindeer Sven in an epic journey ... trolls and a hilarious snowman named Olaf, will the trio find Elsa in time ...