Characters in 9 From the Nine Worlds

Alex Fierro

Gender-fluid child of Loki; narrates the Muspellheim story.

Also in The Hammer of Thor, The Ship of the Dead

Samirah al-Abbas

Valkyrie and devout Muslim; narrates the Jotunheim story.

Also in The Sword of Summer, The Hammer of Thor, The Ship of the Dead

Hearthstone

Deaf elf magician; narrates the Alfheim story.

Also in The Sword of Summer, The Hammer of Thor, The Ship of the Dead

Blitzen

Dwarf and fashion-loving craftsman; narrates the Nidavellir story.

Also in The Sword of Summer, The Hammer of Thor, The Ship of the Dead

Mallory Keen

Hot-tempered einherji; narrates the Niflheim story.

Halfborn Gunderson

Berserker einherji; narrates the Vanaheim story.

Thomas Jefferson Jr.

Einherji known as T.J.; narrates the Helheim story.

Thor

Recurs across the collection while jogging the Nine Worlds for a step goal, helping or hindering each narrator.

Magnus Chase

Series protagonist who is offstage visiting Annabeth and narrates none of the nine stories.

Also in The Sword of Summer, Hotel Valhalla guide to the Norse worlds, The Hammer of Thor, The Ship of the Dead