Kristoff Bjorgman is a Sami ice harvester who, alongside his friend and reindeer, Sven, was raised by the trolls. He generally kept to himself and only interacted with other humans when necessary, preferring the company of Sven. As such, Kristoff only accompanied Anna on her quest to retrieve Elsa strictly as a business arrangement but would eventually develop feelings for the princess; to this end, he strove to ensure her safety as she worked to restore both summer and her bond with her estranged sister.