Summer's devoted boyfriend who vigilantly searches for her throughout her disappearance, driven by his unwavering belief that she is still alive. His perseverance and love for Summer play a crucial role in the efforts to find her.

An accountant with a dark alter ego who kidnaps young women, seeking to recreate a world of purity and beauty in his own warped vision. His controlling nature and obsession drive the sinister events in the story.

A fellow captive in the cellar who forms a friendship with Summer, offering support and solace during their imprisonment. Becca is resourceful and strives to maintain hope despite the dire circumstances.

The longest-residing captive in the cellar, who has witnessed significant violence but tries to maintain a sense of care for the others. Her experiences reveal the deep psychological impacts of captivity.

A courageous captive who stands up to Clover and ultimately pays the price for her defiance. Her actions illustrate her bravery and care for her fellow captives.

A new arrival in the cellar who quickly challenges the existing dynamics and attempts to resist Clover's control. Layal's individuality and defiance highlight her struggle against her dire situation.