A Jötunn (plural jötnar) is a type of entity contrasted with gods and other figures, such as dwarfs and elves, and ancient creatures from Dark Ages. Many of them thrived at Jötunheim and some parts of land of Northgard.
The Jötnar are a unit unique to the Jötunn Camp. They are formidable opponents as enemy, but serves as friendly business partner.
Rig and his bannermen Brand and Halvard first encounter jötnar in Chapter 4. Halvard explained that Jötnar are formidable adversary that it's ill-advised to antagonize, and responds any form of intrusion with aggressive force. Rig noted that it would be more beneficial if establishing a trade route with the giants.
In Chapter 7, Rig and his companions met Skrymir and Fjolsvin who fight over each other's right over sheeps. It is apparent that ruler group led by Skrymir too selfish to give worker side proper reward from their duty. With them demanded Rig to chose which side they are on, it's up to the player for deciding which side the best. Alternatively, they can find a giant relic which recognized by Svarn meant to contain information regarding solution for both jötnar's dispute.
Should the player choose to deciphering the sword, Svarn revealed a story about both sides' ancestors who faced similar dispute until their father dropped the sword to reconcile them. The revelation made Skrymir realizing his errors that he reconciles with Fjolsvin and the rest of his people. Even though most of the story turned out to be made up by Svarn (a fact which surprised Rig), the said story was for both sides' best to prevent their conflict from getting worse.