Clark is a deeply bitter, insecure, and isolated middle-aged man. Driven by the failure of his architecture career and a crumbling personal life, his deteriorating mental state—marked by rage, alcoholism, and denial of accountability—manifests into a dangerous, obsessive descent into the endless corridors. Is nicer to you because you hang out like every day

Captain Clark (also known as Pirate Clark) is a physical, monstrous manifestation of Clark’s own guilt, anger, and self-loathing. As a physical "Still Life" entity created by the Backrooms, his personality is essentially a violent, exaggerated mirror of Clark's worst psychological traits—lashing out at the world for his real-world failures. He only appears in the backrooms.

Mary Kline, the therapist from Kane Pixels' Backrooms universe, is defined by her deep empathy, childhood trauma, and resilient drive to help others. Raised by a mentally ill, paranoid mother who kept her locked indoors, Mary developed an optimistic yet burdened personality, ultimately becoming a therapist to ensure others wouldn't suffer her same fate.

is a loyal, laid-back, and good-natured young man. As an upbeat "Everyman" caught in terrifying circumstances, he goes along with his boss's dangerous ideas due to his easygoing nature and deep care for his girlfriend, Kat.

is the assistant manager at Cap'n Clark's Ottoman Empire. She is characterized as practical, deeply loyal, and selfless, maintaining her humanity and protective instincts in the terrifying liminal space.