King Runeard

King Runeard is the main antagonist in Disney's 2019 animated feature film Frozen II. He was the ruler of Arendelle, and the father of Agnarr and the grandfather of Elsa and Anna.

Frozen II
He appears only in flashbacks. He authorized the creation of a dam, supposedly as a gift for the Northuldra. The dam, however, was a ploy to drain the magic of their Enchanted Forest, which he feared. He murdered the leader of the Northuldra and his actions resulted in the Enchanted Forest being covered in a mist for over 30 years and everyone inside being trapped.