Hrskar is a Giant of possibly Slavebred ancestry who serves as a lieutenant to the King of Jagged Sands. Large, even for a giant, Hrskar gained notoriety as a mercenary fighting for the Ducal forces during the Feral Risings, specifically as an agent of Aetun. Though not a Tuner himself, Hrskar was an intimidating bodyguard who reveled in his work, particularly enjoying the sight of people burning at the hands of the Aetun wizards. At one point, he was given a large Caster cannon to use in battle, the use of which, combined with his predilection toward wearing terrifying battle masks, grew his reputation as a bogeyman figure among the rebel forces.
How Hrskar ended up back in the Char and in the service of the Mongrel is not known. They fought on opposite sides of the war, but presumably knew of each other by their respective reputations. Hrskar seems to have kept his Caster cannon, something that the college of Aetun probably did not approve of, and has been reported using the weapon agaisnt the Felldmanner and the explorers who come near Mongrel King’s charred fiefdom.