Mackenzie "Mack" Black is a young woman living in a shelter who survived a horrific family tragedy orchestrated by her father. The incident left her deeply traumatized, saddling her with an intense desire to remain invisible and unnoticed by the world. She wears baggy clothing and actively avoids forming connections to protect herself. Despite her reservations, she grudgingly agrees to enter the Amazement Park competition out of pure financial desperation.

Ava is a physically powerful military veteran who struggles with PTSD following a combat deployment. She survived a roadside bombing that killed her romantic partner and left her with a permanent leg injury. She enters the contest out of financial need but consistently prioritizes the well-being of others over her own chances of winning. Her tough, forthright exterior masks the deep grief she carries.

LeGrand is a twenty-year-old who was raised in a strict Colorado survivalist cult run by his father. He was recently banished for trying to get outside medical help for his sister. Despite his soft physical appearance and extreme naivety about the modern world, he possesses highly developed outdoor survival skills. He enters the competition hoping to find a way to rescue the sibling he was forced to leave behind.

Linda Nicely is an older woman who presents herself with calm professionalism, acting as the polite hostess for the hide-and-seek competition. Beneath her harmless, middle-aged facade, she is a member of Asterion's founding families who coldly orchestrates the town's dark rituals. She views the struggling contestants as entirely disposable, believing their sacrifices are necessary for her family's continued prosperity.

The Monster is a blind, minotaur-like beast with a bull's head and humanoid body that roams the center of Amazement Park. Kept by the founding families of Asterion, it requires periodic sacrifices in exchange for ensuring the town's unnatural prosperity. It operates entirely on instinct, leaving destruction in its wake.

Brandon is an eternally optimistic gas station attendant from Idaho who views the competition as an exciting adventure. Raised by his late grandmother, he experiences deep loneliness and hopes the event will provide an opportunity to make lasting friendships. He brings a bright, hopeful energy to the group despite the increasingly strange circumstances.

Jaden is a brash CrossFit instructor who acts as a secondary antagonist within the competition. Driven by deep-seated insecurities and a history of feeling rejected by his mother and former partners, he overcompensates with extreme competitiveness. He views his body as a perfect machine and actively bullies other competitors to ensure his own victory.

Beautiful Ava is an aspiring social media influencer and model who enters the competition hoping to boost her career profile. Highly insecure about her own worth, she often suspects she is merely a secondary character in her own life. She repeatedly prioritizes familiar comforts over her better judgment, leading her to align with toxic individuals simply because she fears being alone.

Ian is an aspiring but struggling writer who uses his supposed allergies to people as an excuse for his lack of artistic output. He explores the abandoned park seeking creative inspiration, leading him to uncover historical journals detailing Asterion's true nature.

Christian is a solar panel salesman trying to use the competition to prove himself. He hopes that winning the prize money will impress his estranged mother's wealthy family and earn the romantic affections of his fellow contestant, Rosiee.

Rosiee is a jewelry designer and dog walker who enters the competition to escape her troubled personal life. She spends her time hiding in the decaying amusement park rides, haunted by memories of an abusive ex-partner.

Sydney is a content creator who joins the hide-and-seek competition. Her attempts to hide successfully in the park are targeted and compromised by the manipulative tactics of other highly competitive players.

Atrius, whose real name is Kyle, is an observant graffiti artist. He spends his nights actively exploring Amazement Park, mapping out its structures and realizing that the entire grounds function as a literal labyrinth.