Blitzstone

Blitzstone is the ship of Blitzen and Hearthstone from Magnus Chase and the Gods of Asgard. The two are best friends and partners, often known as Magnus' homeless "mom and dad." Blitzen gave Hearth his signature striped scarf, which he is almost never seen without.

Hearthstone is an deaf elf who practices magic, and Blitz is a dwarf son of Freya with an interest in fashion. They met when Hearth tried magic for the first time and accidentally teleported into Nidavellir, home of the dwarves. Since elves require sunlight to live and Nidavellir is underground, he likely would have died had Blitzen not found him and made a sun-bed for him.

Hearth comes from an abusive family in Alfheim, and Blitzen's father died checking on the Fenris wolf's bonds. Hearth and Blitz joined Mimir's service for the chance for Hearth to pursue magic. They were given the assignment of watching over Magnus Chase while he lived on the street, gaining them the titles of his homeless mom and dad.

After Magnus' death, their true identities as a dwarf and an elf were revealed, and they joined Magnus on his quest for the sword of summer to stop the Fenris wolf. They have a hard time being apart, as seen when they separate to escape Ratatosk, and when they reunite in Nidavellir, Hearth nearly knocks Blitzen off his chair in a hug.

Trivia
 * They are known as Magnus' "parents," despite being barely four years older than him.
 * Hearth never takes off the scarf Blitz gave him early in their friendship.
 * Blitzen built a tanning bed in his home to save Hearth's life.
 * When Blitz is stabbed and then petrified, Hearth is described as "heartbroken."
 * Hearthstone is willing to return to the site of his childhood trauma to save Blitzen's life.
 * They live together in an apartment above Blitzen's clothing shop.