Blitzen

Blitzen is a dwarf friend of Magnus Chase. Posing as a homeless man he, along with Hearthstone, was watching over Magnus per Mímir's orders.

The Sword of Summer
Blitz warns Magnus that two people are looking for Magnus and are passing flyers around town for him. He tells them that a middle aged-man and teenage girl are looking for him. He then tells Magnus to go see Hearth, to be careful, and then quickly disappears before Magnus can say anything back. Later Blitzen and Hearth attack Surt to protect Magnus.

Appearance
Blitz usually looks like he had just finished running through a dirty hurricane. He has wiry black hair, full of paper scraps and twigs, a beard that curls in all directions, and dilated eyes. His face is the color of saddle leather with flecks of snow and looks like he is permanently alarmed. His nose has been broken so many time it looks like a lightning bolt. He is about five feet tall and wears a snow caked trench coat.