Kristoff is a main character in Frozen.

He grew up with trolls and his pet reindeer Sven. He sells ice for a living. He first meets Anna when she is out looking for Elsa, and agrees to help her in her journey. He is very critical of Anna's love for Hans; he believes, as Elsa does, that true love cannot appear in a matter of hours.

After Anna is hit in the heart by Elsa, Kristoff takes her to see his troll family. Afterwards, he helps her get back to Arendelle to be with her true love. However, as he is leaving, he realizes that he loves Anna, so he goes back to save her.

Kristoff hates being called "Christopher", and absolutely adores ice. He writes songs and sings them with Sven, his only true best friend.