Alyss is the seven-year-old princess of Wonderland with a remarkably powerful imagination. Expected to one day rule and uphold White Imagination, her life is upended by a violent coup. After escaping to Victorian London, she faces the challenge of surviving in an unfamiliar world that doubts her sanity, forcing her to confront her memories and identity.

Redd is the ousted sister of Queen Genevieve who seeks violent retribution and control over Wonderland. Driven by a thirst for power and deep resentment toward her family, she champions the destructive forces of Black Imagination. She is an egocentric and ruthless leader who relies on terror to enforce her will.

Dodge is the son of the head guardsman, Sir Justice Anders, and is training to become a palace guard himself. He harbors a deep, albeit socially forbidden, affection for Princess Alyss. Following the traumatic attack on the palace, Dodge's personality hardens as he becomes consumed by a singular desire to avenge his father.

Hatter is the stoic leader of the Millinery, Wonderland's elite security force. Armed with an array of concealed weapons, including his iconic bladed top hat, he is deeply devoted to his duty. Tasked with protecting Princess Alyss during Redd's attack, he travels across Earth in a tireless search to find her and fulfill his promise.

Queen Genevieve is the ruler of Wonderland and a practitioner of White Imagination. She recognizes the immense potential in her daughter Alyss but fears what might happen if that imagination goes undisciplined. Genevieve represents the traditional, peaceful order of Wonderland and serves as a lasting symbol of what Alyss must fight to restore.

The Cat is a lethal warrior and Redd's top assassin, possessing nine lives and regenerative abilities. Half-feline and half-human, he uses an innocent kitten form to disarm enemies before striking with razor-sharp claws. He operates as an agent of violence for Redd, though he also suffers her brutal punishments when he fails.

Bibwit is the albino royal tutor with extraordinarily sensitive ears and a towering height. A scholar who has taught multiple generations of Heart queens, he uses his sharp intellect to guide Alyss in mastering her imagination. During Redd's occupation, he outwardly serves the new regime while secretly aiding the resistance.

General Doppelgänger is the commander of the Wonderland royal army, possessing the unique ability to split himself into two distinct individuals, General Doppel and General Gänger. He prioritizes the greater good of the Alyssian cause above personal comfort, often making difficult strategic choices to ensure the resistance's survival against Redd's forces.

Jack is the heir to the Diamond family with a bullying personality and a noticeable physical profile. As an adult during the occupation, he acts as an opportunistic double agent, pretending to aid the Alyssian resistance while secretly supplying information to Redd. He is motivated entirely by self-interest and survival.

Charles Dodgson is a mathematics professor at Oxford who befriends a young, displaced Alyss. Though well-intentioned and possessing a strong imaginative aura, he misinterprets Alyss's serious recounting of Wonderland as a fantastical children's fairy tale. His publication of the story deeply wounds Alyss and drives her to assimilate into earthly society.

Quigly is the pragmatic leader of an orphan gang in Victorian London. Having lost his upper-class family to murder, he survives on the streets through cunning and thievery. He initially provides Alyss with food and shelter, but his willingness to abandon her to the police teaches her a harsh lesson about earthly survival and trust.

King Nolan is Alyss's father and Genevieve's husband. He travels to neighboring Boarderland seeking an alliance against Redd's rising military strength, but faces rejection. Anxious to return for his daughter's birthday, he pushes his troops hard toward Wondertropolis.

Sir Justice is the head of the palace guard during Genevieve's reign and a hero of the previous civil war. He is a virtuous man dedicated to protecting the crown, and he serves as a primary role model for his son, Dodge.

Prince Leopold is the son of the Queen of England and a suitor to Alice Liddell. He is drawn to Alice's intelligence and beauty, treating her with respect and listening to her ideas. While Alice appreciates his intellect, she views an engagement to him primarily as a duty to her adoptive family.

Mrs. Liddell is Alyss's strict adoptive mother in Oxford. She scolds Alyss for speaking about Wonderland and pressures her to assimilate into Victorian society, eventually encouraging her to choose a respectable husband.

Reverend Liddell is the dean of Christ Church College in Oxford. He provides Alyss with a stable, respectable home, though his household expects her to completely shed her bizarre stories and assume the identity of Alice Liddell.

Lorina is one of Alyss's adoptive sisters. She frequently mocks Alyss for her unusual name and stories about Wonderland, contributing to Alyss's growing self-doubt and eventual decision to conform to English society.

Edith is Alyss's other adoptive sister. Along with Lorina, she isolates Alyss by participating in the teasing about Wonderland, enforcing the rigid social expectations of their Victorian household.

Homburg Molly is a young Wonderlander connected to the Alyssian camp. She uses her knowledge of the city's streets and secret exits to guide Alyss and her companions to safety when Redd's forces ambush them.