Isla is the 19-year-old ruler of the Wildlings who attends the Centennial to break the vicious curse on her people. Raised in extreme isolation, she guards the dangerous secret that she possesses no magical abilities. She compensates for this lack of magic with intense combat training and a sharp, strategic mind. She initially relies on beautiful gowns as armor to distract from her hidden vulnerabilities.

Grim is the ancient, imposing ruler of Nightshade who wields the feared powers of darkness and death. His dark reputation makes him an outcast among the other leaders, a status he seems to accept with sarcastic indifference. He frequently flirts with Isla, masking his true intentions behind a wicked charm.

Oro is the king of Lightlark and the ruler of the Sunlings. As an Origin, he wields multiple powers, though his connection to the fading island places heavy burdens on his shoulders. He maintains a cold, rule-bound exterior, fearful that falling in love will leave him vulnerable to power theft.

She serves as the ruler of the Starlings and is one of the youngest participants in the Centennial. Bound by a curse that limits Starling lifespans to twenty-five years, she desperately seeks a way to break the magic before her time runs out. She works closely with Isla, offering strategy and support as they hunt for a magical artifact.

Cleo is the elegant and coldly beautiful ruler of the Moonlings, commanding powerful ice magic. She bears a strong prejudice against Wildlings and frequently insults Isla. Her secretive actions, including the potential building of a private army, make her a source of suspicion during the games.

Azul rules the Skylings, presiding over a democratic society that has abolished its nobility. He possesses air magic, which he uses to create music through giant mountain tunnels. He carries deep grief over the loss of his husband, tempering his cheerful exterior.

Terra is one of Isla's two primary guardians and her fighting instructor. She believes in brutal, demanding physical training, teaching Isla to rely solely on herself and ignore sentimentality. She views Isla's body and skills as the property of the Wildling nation.

Poppy serves as Isla's charm instructor and co-guardian in the Wildling nation. She teaches Isla how to use her physical beauty and grace as weapons to manipulate others. Like Terra, she enforces strict isolation to ensure Isla prioritizes her duty over personal desires.

Ella is a Starling girl with a limp who serves as an attendant at the Mainland palace. She helps Isla handle the daily requirements of the Centennial. Isla negotiates with her to secure regular food instead of the raw hearts Wildlings are expected to consume.

Juniper is a barkeep in the Lightlark marketplace who deals in secrets and information. He trades valuable knowledge about the islands and the curses in exchange for interesting confessions from his patrons.