Paisley is a 17-year-old true crime vlogger from a financially secure and supportive family. She studies the darker side of human behavior by creating podcasts about old, solved cases. She arrives at Jagged Island eager to preview the billionaire's amusement park, approaching the location's creepy Gothic aesthetics with a mix of excitement and analytical observation.

Liam is a gamer influencer with a massive online following. He presents himself as an athletic, relaxed young man who easily brushes off online criticism. He drives a Range Rover and uses humor to charm the other guests, paying special attention to Paisley to put her at ease in the new environment.

Malcolm is the eccentric billionaire owner of Jagged Island. He dresses in heavy, ostentatious clothing regardless of the summer heat and constantly smokes a pipe. He demands attention and obedience from his staff, showing little interest in the comfort of others as long as his resort receives praise.

Harper is an introverted book blogger who brings a large stack of reading material to the island. She wears her hair in an Afro and keeps to herself more than the louder influencers. She quickly forms a bond with Paisley, preferring quiet conversations over the complaints and posturing of the other guests.

Reeve is the head of maintenance on Jagged Island. A tall, muscular young man in his early twenties, he catches Paisley's eye immediately. He harbors secrets about his past but demonstrates dedication to his job and loyalty to his friends on the island staff.

Camilla is the overworked assistant to Malcolm Wyatt. She maintains rigid, professional posture while managing the logistics for the island's skeleton crew. She acts timid around her demanding boss and quietly absorbs his constant orders without complaint.

Will is a beauty and makeup influencer with a massive online presence. He maintains a warm attitude toward the other guests, distinguishing himself from the snobbish influencers. He enjoys breaking minor rules and looks for fun ways to explore the eerie new environment.

James is a film reviewer and influencer. He has striking features and clearly spends time working out. He immediately pairs off with Ava, preferring to flirt with her rather than engage deeply with the rest of the group.

Ava is a snobbish beauty vlogger known for her brutal honesty online. She complains constantly about the island's dark aesthetic and treats the staff poorly. She relies heavily on her appearance and the attention of others to maintain her status.

Gibson is the boat pilot who transports the influencers to the remote island location. A few years older than the teenage guests, he is an experienced sailor who respects the dangerous waters surrounding the resort.

Kenna is the cook working on the island's minimal staff. She remains in the background, preparing meals for the high-profile guests during their preview weekend.

Blaine is Paisley's older brother who studies biochemistry at Princeton. He holds the position of the family's preferred child but uses his standing to support Paisley's unique hobbies and ambitions.

Elliana was a young girl from Paisley's hometown. Her tragic case serves as the catalyst for Paisley's intense study of criminal behavior and podcasts.