Agatha is a strong-willed, independent teenager who recently returned to Gavaldon after surviving the School for Good and Evil. Though she chose her friendship with Sophie over a romance with Tedros, she secretly longs for her prince, causing tension in her current life. She is fiercely protective of those she loves and highly observant, constantly questioning the rigid rules of the magical society.

Sophie is a beautiful, fashion-conscious girl who struggles to suppress her darker, witch-like tendencies. She resents her father's remarriage and fiercely guards her friendship with Agatha, fearing abandonment above all else. Desperate to prove she is Good, she eagerly embraces the attention of the newly formed School for Girls, seeking validation and control over her own narrative.

Tedros is the prince of Camelot and the de facto leader of the princes exiled to the former School for Evil. Deeply hurt by Agatha's choice to save Sophie instead of remaining with him, he harbors intense resentment and wounded pride. Despite his harsh exterior and militaristic leadership, he retains emotional vulnerability and a desire for genuine connection.

Evelyn Sader is the new dean of the School for Girls. She promotes a philosophy of female independence, encouraging her students to reject traditional fairy tales and live without princes entirely. Elegant and commanding, she uses her position to reshape the school's curriculum while taking a specific interest in Sophie and Agatha's developing story.

Callis is Agatha's mother, living with her in the village of Gavaldon. She provides Agatha with pragmatic, sometimes blunt advice about happiness and the nature of fairy tales, warning her daughter against angering the village Elders.

Stefan is Sophie's father, a resident of Gavaldon who is remarrying following the death of his first wife. His attempt to move on with Honora causes friction with Sophie, who feels alienated by his new life.

Honora is a former friend of Sophie's late mother and Stefan's new wife. She runs a shop in Gavaldon and expects Sophie to assist her, representing the mundane village life Sophie desperately wishes to escape.

Vanessa is Sophie's deceased mother. Sophie misses her terribly and visits her grave in Gavaldon, frequently wishing she could see her again.

Professor Dovey is a fairy godmother and a teacher at the newly formed School for Girls. She watches over Agatha and tries to help the girls understand the magical consequences of their reopened fairy tale.

Lady Lesso is a teacher at the School for Girls who previously taught at the School for Evil. She explains the dangerous magical fallout of Agatha and Sophie's incomplete story and works to maintain the protective shield around the girls' castle.

Hester is a former Never (villain student) and a witch who dislikes the new, boy-free social order at the school. She wants school life to return to normal and actively encourages Agatha to resolve her conflict with Tedros to prevent an all-out war.

Anadil is a witch and former Never who shares Hester's frustration with the School for Girls' new curriculum. She assists Agatha in brainstorming ways to fix the fractured magical world, preferring the old balance of Good and Evil.

Dot is a witch who, unlike her friends Hester and Anadil, actually enjoys the new rules at the School for Girls. She is highly observant and provides crucial information to Agatha, despite her peers sometimes underestimating her intelligence.

Yara is a mysterious, exceptionally beautiful new girl at the School for Girls who does not speak, communicating only through squawks. She immediately catches Sophie's attention upon her arrival.

Aric is Tedros's aggressive army captain at the School for Boys. He holds a deep grudge against the girls and frequently pushes Tedros to adopt a more militant, unforgiving stance in the escalating conflict.

Hort is a student at the School for Boys. He is eager to prove himself in the upcoming trials against the girls and tries to maintain his standing among the increasingly volatile male student body.

Yuba is a gnome and former teacher of Merlin who instructs students on the rules of the magical world. He possesses deep knowledge of spells and potions, and is known for the gnomes' natural ability to change their sex during youth.

Pollux is a teacher at the school, taking the unique form of a two-headed dog whose head now sits atop an antelope's body. He helps organize the challenges that rank the girls for their upcoming conflicts.

Beatrix is a student at the School for Girls who participates in the new classes and challenges. She interacts with Sophie and Agatha in their shared dormitory spaces.

August Sader is Evelyn Sader's deceased half-brother and a highly successful seer. His historical writings and hidden memories provide Agatha with crucial clues about his family's past and his sister's eviction from the school.