Female. Loves the water. Has a bright, active, and devoted personality. A ship phantom.

Female. A shut-in with very little physical stamina (gets out of breath after running just a bit); has asthma. Has a timid yet calm personality.

Female. Has a timid and devoted personality.

Female. Has a gentle personality and cares for her friends. The funny person (boke).

Female. Has a carefree and somewhat caring but secretly devious personality. A bit dim-witted (an idiot).

Female. Works hard and takes action, but her efforts often backfire. Has a composed and calm but timid personality.

Male. A stubborn old man who is silent, but kind at heart; he hates dishonesty and likes those who are fair and square. Looks like a cloud. The funny person (boke). Has a calm and thoughtful personality.

Female. Has a bright, active, and childish personality. A total meathead (the type who dies first in a horror movie). Loves alcohol. The funny person (boke).

Female (androgynous and sometimes mistaken for a boy). The straight man (tsukkomi). Has a calm, bright, and somewhat thoughtful personality. Loves bugs so much she wants to eat them.

Monsters of various types. - Howler: Looks like wire; mimics human voices saying things like "Help me" to lure and attack people. - Skin-Stealer: Can transform into the person it killed. - Wretch: The final form of humans who wandered the Backrooms for too long without escaping. - Hound: A dog with a human face; weak to light. - Deathmoth: Looks like a giant moth; takes targets to its nest to eat them. - Smiler: Has a huge grin and perfect teeth; weak to light. - Windows: Lurks outside windows; leaps out to kill the target the moment they get close.