: A fierce protector sent by January's father. Originally from a world where women are hunters, she becomes January's most vital ally.
: The story alternates between January's present-day struggle for freedom and the book-within-a-book, which recounts the epic love story of Adelaide Lee Larson and Yule Ian Scholar (January’s parents) across different dimensions. Alix E Harrow - The Ten Thousand Doors of Januaryzip
: A young woman of mixed heritage who feels like one of Mr. Locke's collected artifacts. She evolves from an obedient ward to a powerful "word-worker". : A fierce protector sent by January's father
: The primary antagonist and January's guardian. He is revealed as a centuries-old exile from another world who seeks to "civilize" the world by closing all portals. : A young woman of mixed heritage who feels like one of Mr
: January realizes that Mr. Locke and his secretive "Society" are dedicated to closing all Doors to maintain a rigid, "modern" order and suppress the chaos of other worlds.