Bryce is a male character, his personality sarcastic, monotone, and laid-back character who masks a tragic, mundane life with irritability and mild cynicism.

Amelia is a female character, her personality calm, down-to-earth yoga instructor who deeply cares about her friends, but she progressively becomes anxious and irritable due to the extreme duration of the competition. Driven by an intense desire to go home, she purposefully tries to lose challenges so she can be eliminated.

Charlotte is a female character, her personality fiercely independent, grouchy, and competitive contestant. Driven by a desperate need to win the grand prize to fund treatments for the mold spreading over her body, she is highly self-reliant, quick to anger, and can be compulsively violent when pushed.

School tray is a female character, her personality Bubbly and very approachable. Unlike some of the colder contestants, she frequently tries to strike up conversations and display friendly behavior toward those around her.

Whipped cream is a male character, his personality laid-back, highly sociable, and extroverted character. He is generally very friendly and sympathetic to his fellow contestants, taking his new situation in stride and viewing the competition as a nice break from "standing in a fridge all day". He is often depicted caring for and teasing his close friend, Subway Seat.

Subway seat is a male character, his personality-wise, he is generally polite, somewhat naive, and caring, often worrying about the comfort of others and acting as a close, helpful friend to other object contestants.

Airy is a male character, his personality deeply complex, apathetic, and lonely character. Driven to madness by extreme isolation following his accidental death, he comes across as a detached and slightly incompetent kidnapper