Lyla is a 32-year-old postdoctoral virology researcher struggling with discouraging lab results. She faces a potential career crisis and reluctantly agrees to join the show to support her boyfriend's ambitions. Pragmatic and highly logical, she quickly feels out of place among the glamorous cast members. She harbors deep skepticism about the superficial format of the competition and prefers focusing on concrete facts over performed drama.

Nico is a struggling actor who views the reality competition as his final chance to achieve fame. Four years younger than Lyla, he frequently prioritizes his career aspirations over her comfort. He manipulates her into joining the production by omitting key details about the rules. He enthusiastically performs for the cameras to build his public image.

Conor is a towering, heavily muscled YouTuber with millions of subscribers. He exudes physical dominance. He reacts coldly to any challenges to his authority. Despite a public persona focused on fitness, he maintains a chillingly calm demeanor that leaves the other contestants uneasy.

Joel is an early-career journalism professor who joins the show entirely at his girlfriend's insistence. He lacks the muscular physique of the other male contestants. He openly worries about being mocked by the audience. He gravitates toward Lyla because of their mutual discomfort with the production's demands.

Zana is a 22-year-old woman dating a man a decade her senior. She appears timid and heavily dependent on her partner's approval. She suffers from a severe phobia of water. The island setting remains a constant source of terror for her.

Angel is a glamorous French fitness instructor. She displays a self-assured personality. She quickly demonstrates a sharp eye for the shifting social dynamics among the couples. She easily matches the show's aesthetic requirements while maintaining a tough exterior.

Santana is a wealthy, fit contestant. She wears an insulin pump to manage her Type 1 diabetes. She projects a cheerful exterior for the cameras. She privately relies on her best friend for emotional support, and her medical condition makes her vulnerable to the island's unreliable power grid.

Dan is a model and aspiring actor. He privately confesses that he is a gay man with a partner in London. He poses as Santana's straight boyfriend to secure a spot on the broadcast. He focuses entirely on protecting Santana's health.

Basil is the brash, demanding lead producer of the reality show. He frequently objectifies the female contestants. He demands absolute obedience from the cast. He deliberately creates stressful situations to manufacture drama for the cameras.

Bayer is a gym owner. He resents taking orders from anyone else. He quickly establishes himself as a disruptive force within the group, clashing with the island's other strong personalities.

Romi is a makeup and style influencer. She thrives on the constant attention of the cameras. She forced her boyfriend onto the show and continually seeks validation from the other male contestants.

Camille works as an assistant to the production team. She delivers the bad news to the cast regarding confiscated phones and unexpected rule changes. She maintains a professional demeanor regardless of the cast's outrage.