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âOfficial Disney Bio. The Trolls are a group of characters in the 2013 Disney animated film Frozen. Most of the trolls appear to be loving and family-oriented, such as when Bulda adopts Kristoff and Sven, and when she and the other trolls try to convince Anna to marry him.
In September 2012, 20th Century Fox and DreamWorks Animation announced that the film with the working title Trolls would be released on June 5, 2015, with Anand Tucker set to direct the film, written by Wallace Wollodarsky and Maya Forbes. Moretz and Schwartzman have also been confirmed to lend their voices.