Ulf is actually Sköll, the wolf of Ragnarok who is destined to swallow the sun. He is Vetr’s BFF whom Vetr raised as a puppy. Callan is Ironspell’s Fylgja—he contains a portion of Ironspell’s soul. Together, Ulf and Callan are BFFs as well. Ulf lets Callan get away with puppy antics, but only puts up with it so far…