A live reindeer was brought into the animating studio for animators to study its movements and mannerisms for the reindeer character in Frozen, Sven. Co-director Jennifer Lee said it was the best moment during production for her.
In early designs for Frozen, the giant Snow Monster that Elsa creates was a giant version of Olaf, who addressed him as “little brother”. But it was later decided that although it was cute and kind of funny, it ultimately looked a bit dumb.
When Anna, Kristoff, and Olaf reach Elsa’s castle in Frozen, Anna tells the others to wait outside for “one minute,” and the two of them begin counting. It’s almost exactly one minute later that you hear Olaf say, “Sixty!” and he enters Elsa’s castle.
Kristen Bell stated that with Frozen, she has fulfilled a lifelong dream of voicing an animated character ever since she saw The Little Mermaid and Aladdin as a kid. When she was around that same age, she recorded a voice box where she sang a couple of songs from The Little Mermaid, including “Part of Your World”. Her Little Mermaid vocal tracks were part of the reason why she got the part of Anna, as director Jennifer Lee said to her that if she hadn’t recorded her own vocal tracks from Mermaid, it would’ve been very difficult to the find the right one to play Anna.
Idina Menzel said Frozen is “a bit of a feminist movie for Disney.” “I’m really proud of that,” Menzel tells Zap2it. “It has everything, but it’s essentially about sisterhood. I think that these two women are competitive with one another, but always trying to protect each other - sisters are just so complicated. It’s such a great relationship to have in movies, especially for young kids.”
Kristen Bell said on a similar matter: “I’m really excited to show it to people. I became a part of the kind of movie I wanted to see as a kid,” she said. “I always loved Disney animation, but there was something about the females that was unattainable to me. Their posture was too good and they were too well-spoken, and I feel like I really made this girl [Princess Anna] much more relatable and weirder and scrappier and more excitable and awkward. I’m really proud of that.”
Director Jennifer Lee shared the same feeling as she noted that although they’re princess, Anna and Elsa are more modern than the titular character in Cinderella: “These girls are very different from Cinderella. Their wants and goals and dreams are much more, I think, contemporary. And I think you’ll keep seeing that shift,” Lee explained in the March 21, 2014 interview with CBS This Morning.