Rosalina is a 22-year-old human who was recently banished from her chosen home in the Enchanted Vale. She longs to return to the four cursed princes she views as her family and actively works to find a way back through her mother's magical locket. Her experiences in the fae world have changed her, pushing her to find the inner fire required to stand up to her human abusers and claim her own agency.

Keldarion is the High Prince of Winter, burdened by a curse that turns him into a monstrous white wolf. He operates under a rigid, self-sacrificial code, believing his dark past makes him a corrupting force to those he loves. He banishes Rosalina out of a twisted desire to protect her, choosing to endure intense isolation and the physical spread of his ice magic rather than complete their bond.

Farron is the High Prince of Autumn, a gentle scholar afflicted by a curse that transforms him into an uncontrollable, fiery beast. He carries immense guilt over his perceived cowardice during a past war and feels inadequate as a leader. His terror of his own shadow self often paralyzes him, making him desperate for a way to cage his monster and protect his friends.

Dayton is the High Prince of Summer, cursed to take the form of a golden wolf. He uses charm, swagger, and excessive drinking to mask his emotional vulnerability and the pain of his broken family. Beneath his hedonistic exterior, he is fiercely loyal and terrified of losing the people he loves.

Ezryn is the High Prince of Spring, a stoic and dutiful warrior who hides his face behind a featureless helmet. He acts as the steadfast protector of his found family, burying his own trauma and fears beneath a rigid sense of honor. He fears his own innate fire magic, preferring to fight with steel rather than risk losing control.

Caspian is the Prince of Thorns and ruler of the Below, wielding dark briar magic that chokes the Enchanted Vale. He is charismatic, lonely, and deeply manipulative, operating outside the bounds of honor that constrain the other princes. He delights in exposing the hypocrisy and hidden desires of his enemies while pursuing a secretive agenda.

Lucas is Rosalina's abusive human ex-fiancé who relentlessly harasses her after her return to the human world. He uses coercive control, gaslighting, and physical violence in an attempt to force her into marriage, representing the mundane horrors of Rosalina's old life.

George is Rosalina's father and a dedicated researcher of fae folklore. He has spent years searching for proof of the magical world following his wife's disappearance. He is fiercely protective of his daughter and supports her quest to return to the princes she loves.

Niamh is Farron's mother and the acting steward of the Autumn Court. Disappointed by her eldest son's curse and his absence, she has taken firm control of their military forces to protect her people from an encroaching magical frost.

Padraig is Farron's father and a member of the Autumn Court leadership. He shows more immediate sympathy for his cursed son than his pragmatic wife does, attempting to bridge the gap between his family members.

Dominic is one of Farron's younger twin brothers. Acting on his mother's orders, he braves the dangerous magical briars to confront the Winter Court, demonstrating extreme loyalty to his home territory.

Billagin, also known as Billy, is Farron's younger twin brother. He travels from the Autumn Court to demand answers about the deadly frost destroying their home, showing a willingness to engage in deadly politics for his people.

Perth Quellos serves as the vizier to the High Prince of Winter. He manages the day-to-day operations and military communications of the Winter Court while Keldarion is trapped by his beastly curse.

Marigold is a fae servant working in the cursed palace of Castletree. She provides Rosalina with friendship, logistical support, and a sense of normalcy in the chaotic magical environment.

Astrid is a fae servant at Castletree who helps maintain the castle despite the encroaching ice and thorns. She is practical and supportive, frequently assisting Rosalina with preparations for formal events.

Eirik is the leader of the Kryodian Riders, the elite cavalry of the Winter Court who ride massive cold-weather beasts. He takes his duty to protect the world from monsters seriously, even when it puts him at odds with the court's politicians.

Sira is the Queen of the Below and the mother of Caspian. She wields immense, shadowy influence over the dark creatures of the underground and orchestrates large-scale violence from the shadows.

Anya is Rosalina's missing mother who vanished into the woods when Rosalina was a baby. She left behind a magical moonstone locket that serves as a vital clue to her daughter's past.