Ella’s surly, blond roommate at the Arcanum who was raised without knowledge of her magical heritage, contributing to her initial standoffish behavior.

A student at the academy from a large Jamaican family, who befriends Ella and possesses the Paragon of Sound, enabling him to speak to animals and magical creatures.

The novel’s villain, capable of altering her appearance and stepping through portals, with a vendetta against the Marvellers.

Ella’s mentor and favorite teacher at the Arcanum who advocates for tolerance and diversity within the school community.

Ella’s father, a High Walker with the ability to enter the Underworld, who supports Ella’s integration into the Marveller world.

Ella’s mother, a Conjuror who is protective of Ella due to her own experiences and the loss of her twin sister.

Ella’s aunt and a new faculty member at the Arcanum teaching the Conjure Arts, who supports Ella with guidance.

Aubrielle’s missing twin, known for her curiosity about the sky cities and revealed later in the novel.

One of the administrators at the Arcanum who proactively assists Ella in overcoming integration challenges.

Co-administrator of the Arcanum, depicted as sympathetic to Ella but committed to procedural fairness.

The Dean of Discipline who is wary of Ella due to implicit bias against Conjurors, overseeing student discipline.

An elderly professor known for divination studies who frequently targets Ella for small infractions.

One of Ella’s original roommates who leads a clique of mean girls, exhibiting prejudice against integration.

Ella’s younger sister, shown briefly to share the family Conjuring heritage, with potential to attend the Arcanum later.