Ten years before the events depicted in the movie plot, Mizore played a role in overthrowing Sousetsu Kazahana, the daimyō of the Land of Snow, on behalf of Dotou Kazahana. At that time, Mizore was very confident in his abilities and believed that he would be invincible while wearing his Chakra Armour. He was a tall man with short purple hair and dark eyes. He wore the standard uniform of his team, which consisted of a blue and white outfit with Chakra Armour. Additionally, Mizore had small circular-shaped purple eyebrows.
Mizore's fighting style involved using a snowboard for quick movement, employing his chakra armour, and wielding a metal arm that could fire cables or be launched at targets before retracting. He also demonstrated great strength and skill in taijutsu, squaring off against Naruto Uzumaki while under the influence of the Nine-Tailed Demon Fox.