Hearthstone

Hearthstone, more commonly known as Hearth, is an Elf formerly disguised as a homeless man, and a companion of Magnus Chase.

The Sword of Summer
Blitz wakes up Magnus one morning and tells him he should to go talk to Hearth.

After breaking into his uncle Randolph Chase's house, Magnus looks outside the office window and sees Hearth standing next to a statue of Leif Erikson. Hearth uses hand actions to try to tell Magnus to get out of the house, but it was too late as Randolph returns home and comes upon Magnus and tells him that they don't have much time and "they" are coming to kill Magnus now that he's sixteen. Hearth and Blitz attack Surt in order to protect Magnus. Hearthstone is swatted away and lands by the railing. He helps a woman get her children out of their stroller and takes them to safety at Magnus' urging.

He and Blitz find Magnus in his room. Before they can explain why they where watching him, the squirrel alarm sounds. They flee to Midgard while Magnus' hall mates distract the wolves and the Valkyries, they land in Fenway. He and Blitz explain that they where told that he was a son of Frey and to watch him. They show him his obituary and the three plan to sneak in to the funeral home before his service starts. He and Magnus plan to meet up with Blitz on the first T stop on Arlington after they get the sword.When on their way to the funeral home, they spot Gomez, a police officer who knows them, and hide. He explain Alfheim to Magnus while they hide. While at the funeral home he stands watch while Magnus finds the sword. He is knocked out and wakes up in an ally. He hobbles into the funeral home and gets Magnus. The two then meet up with Blitz and tell him the sword was not there. They then spot Sam and follow her. When they lose her the decide to go to the charles, Sam then attacks them. He and the former Valkyrie fight until Magnus disarms her. They then let Sam join them. the four head to a dock where Blitz throws Mimir's head in the water to hydrate it. He and Sam bow in his presents. After he tells them to find the sword and that they have a week to do it. He offers them knowledge in exchange for their service, but they decline. After Mimir leaves they talk it over during lunch.

When they get to the transportation building's food court, he and Blitz grab a seat and have an argument in sign language. When Sam and Magnus get Back a pigeon threatens to starve them unless he listens to them about the sword. Magnus agrees despite the others urging not to. The pigeon gets their food in the form of an eagle and eats the whole thing. Sam then claims it it a jotnar. When it takes off with Magnus they follow them and find him on the Boston public library. When he gets down and tells them what he learned they reprehend him for making a deal with a jotnar nut go fishing.

When they get to the docks he and Blitz are denied the boat while Sam and Magnus are. He stays behind to help Blitz find shelter and agrees to meet the demigods at the library later. During that time he and Blitz do research as to what to do next. They wait for Magnus at the public library and talk with big boy while they wait. When he leaves Magnus appears. The three compair notes and Blitz is worried. The Dwarf gives them sandwiches and sleeping bags. Hearth is the first to go to sleep.

In the morning He, Blitz, and Magnus meet up with Sam in the public garden to get to Nidevillir. While Magnus is opening the rift he casts a spell to keep the advancing Valkyries and Enherjar from catching them but classes soon after. When Magnus opens the rift he is aided by Sam and Magnus into it. The four climb the world tree until they find a knothole the sword wants to enter. He gets stuck and before they can free him Ratatosk appears. Blitz drags Magnus into the knothole while Sam hides him and herself in her hijab.

While they hide he helps Sam along as she is recovering from her squirrel's shrieks. They wonder around the world tree and avoid getting attacked by deer until the reach Alfheim, much to his displeasure. They meet up with Magnus and Blitz in Nidavellir where he hugs Blitz and the four fill each other in. Blitz then tells them Junior challenged him to a crafting contest, loser gets decapitated. After that Blitz takes him and the demigods to his apartment and after he tries to stop Blitz from telling his story, which the dwarf says he is fine with sharing. After Blitz heads to his room he tells Dam and Magnus that Blitz is a good at crafting but not under pressure and shows them the tanning bed Blitz made for him. He signs people cheat in the contest but make it look like accidents. He suggests Sam do what she did on the world tree, she leaves in rage when she hears it. He does not answer Magnus when he asks what that was about and heads for the tanning bed. During the competition he alternates between aiding Blitz and standing guard. When Magnus asks him about Sam does not answer.

Appearance
Hearthstone is a tall pale man with short, spiky hair so blonde it's almost white and pale grey eyes. He wears a black leather jacket, black motorcycle pants and pointy-toed shoes, and a red and white scarf.

Later on, Magnus begins to notice the non-human details in Hearth's appearance - the elf's pupils are strangely reflective, like a cat’s, while his veins are more green than blue under his translucent skin. Also, despite his disheveled appearance at times, Hearth does not ever reek like a normal homeless person – body odor, alcohol, stale grease. Instead, the elf smelled more like pine needles and woodsmoke.

Abilities

 * Alf Sign Language: As Hearthstone is deaf he communicates via Alf Sign Language.
 * Rune Magic: Hearth is skilled at rune magic. He can open doors. He can stop enemies from approaching. He can give someone a burst of energy. However he becomes faint after using a spell.


 * Deafness: While Hearthstone can not hear, his lack of hearing gives him an immunity to sound based attacks. Such as when he and Sam were hiding from Ratatosk and he was unaffected by the squirrel's screech.

Trivia

 * Hearth is deaf and knows Alf Sign Language, which abbreviates to ASL.
 * It is stated that his parents never accepted Hearthstone due to his deafness, as well the death of his brother.