Annika is the 17-year-old daughter of a New York City Mafia leader, studying at Royal Elite University in the United Kingdom. She maintains a cheerful, bubbly exterior to survive the suffocating expectations of her overprotective brother and powerful family. Drawn to danger despite her sheltered upbringing, she secretly initiates a plan to find a fake boyfriend to avoid a potential arranged marriage. Her intense curiosity drives her to uncover the secrets of a dark, silent student at a rival university.

Creighton is a quiet, 20-year-old student from King's University who harbors deep-seated trauma from his early childhood. Adopted by the wealthy King family and raised in England, he uses silence and an intimidating physical presence to keep others at a distance. He is highly disciplined, physically imposing, and possesses a dominant, sadistic streak that he rigidly controls. He views Annika as an invasive, colorful disruption to his carefully managed isolation.

Jeremy is Annika's older brother and the president of the Heathens, a secret society at King's University. As the heir to a Russian Bratva empire, he takes an authoritarian approach to protecting his sister, keeping her confined to his heavily guarded mansion. He strictly enforces his worldview, believing his restrictive actions are entirely justified to ensure Annika's safety from rival factions.

Eli is Creighton's older brother, possessing a calculated, intimidating presence that others liken to a serial killer. Unlike Creighton's physical aggression, Eli uses psychological cunning and acute observation to move through their dangerous social circles. He acts as a fiercely loyal advisor to Creighton, often encouraging his darker impulses while shielding him from external threats.

Landon is Creighton's cousin and the manipulative leader of the Elites at Royal Elite University. He treats social interactions like a chessboard. He uses leverage and secrets to force others into doing his bidding. He holds vital clues about Creighton's biological family, rationing this information to control his cousin and create chaos for his own amusement.

Remington is Creighton's extroverted and flamboyant cousin. He provides a sharp contrast to the brooding King family members by embracing impulsivity and humor. Despite his arrogant, carefree attitude, he is fiercely loyal to his inner circle and readily defends Creighton from social scrutiny.

Ava is Annika's energetic, fashionable roommate and best friend at Royal Elite University. She provides Annika with a vital connection to normal collegiate life, pulling her away from her family's strict oversight. Outspoken and protective, Ava initially questions Creighton's suitability but ultimately prioritizes her friend's happiness and emotional health.

Cecily is a pragmatic and studious member of Annika's friend group at Royal Elite University. She serves as the voice of reason among her peers, offering grounded advice when situations become volatile. She is highly observant of the power dynamics between the rival campus societies and maintains a quiet, steadfast loyalty to Annika.

Brandon is Landon's twin brother and stands out as a traditionally kind-hearted member of the King family. He possesses a gentle, charismatic personality that makes him an appealing candidate for Annika's fake boyfriend scheme. He acts as a mediating presence in his volatile family, consistently showing concern for the safety and emotional health of those around him.

Adrian is Annika's father and a powerful, intimidating figure within the Russian Bratva. He funds King's University and expects strict adherence to his rules. He establishes an environment where his family members are closely monitored, approaching his daughter's future strategically through the lens of organized crime alliances.

Lia is Annika's mother, a former prima ballerina whose career ended abruptly. She is deeply affectionate toward her daughter but suffers from severe anxiety stemming from a traumatic past. She relies heavily on the security provided by her husband and attempts to guide Annika toward a safe, approved future.

Nikolai is a ruthless syndicate figure and a core member of the Heathens secret society. He operates as Jeremy's right-hand man, executing violent reprisals against rival factions without hesitation. He views the inter-university conflicts as serious turf wars and actively participates in the brutal underground fight club.

Aiden is a ruthless media figure and the adoptive father of Creighton and Eli. He maintains a commanding presence and frequently engages in competitive banter with his eldest son. Despite his cold public persona, he is deeply invested in the survival and success of his adopted children.

Elsa is Creighton's adoptive mother, a warm and nurturing figure who contrasts sharply with the dangerous men in her family. She has a fragile heart condition, prompting extreme protectiveness from her husband and sons. She fell in love with Creighton the moment she met him and desperately wishes for him to overcome his internal demons.

Yan is a trusted bodyguard and the second-in-command to Adrian Volkov. He functions almost like an uncle to Annika, providing a familiar and comforting presence within the heavily guarded family compound. He is deeply integrated into the Volkov household's daily routines and security measures.

Tiger is an abandoned kitten living at the local animal shelter where Annika volunteers. He becomes a subject of affection for Annika and serves as a catalyst for interactions between her and Creighton during their volunteer shifts.