Jackson Overland Frost (voiced by Chris Pine), better known as Jack Frost, is the main protagonist in Rise of the Guardians and an immortal supernatural being much like the Guardians. Unlike the others, however, he is a loner, the classic rebel without a cause, sarcastic and mischievous. As the manifestation of winter, Jack Frost is capable of manipulating ice and snow. He is the spirit of mischief and chaos personified, but when he discovers the purpose behind his powers, he will become a true Guardian, representing "Fun."

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