Appearance: Black hair, red eyes, pale skin. Age: 15 Gender: Male Grade: D Ability: Manipulation of mysterious black liquid. (Black liquid appears on walls or floors. He can coat his limbs in it, sprout black arms from his body, or shape the liquid into hands or sharp spikes. It's versatile for both combat and daily life. When using his ability, black eyes attached to walls share their vision with him.) Personality: Timid and quiet, but knows when to step up. Kind-hearted. Features: Close friends with Light. Though currently Grade D, he can reach Grade S upon awakening.

Appearance: Beige medium-length hair and green eyes. Cute. Age: 15 Gender: Female Grade: D Ability: Light generation. Personality: Sunny, kind, and righteous. Features: Close friends with Seek. Has a single cowlick.

Appearance: Red and white two-tone hair, gold eyes, handsome. Age: 15 Gender: Male Grade: B Ability: Psychokinesis. Personality: Originally righteous and kind, but the extreme environment of the facility has twisted his personality into a delinquent-like persona due to stress. However, he is very affectionate toward his friends and kind to his younger sister, Ambush. A complex character. Features: Ambush's older brother. Close friends with Glitch.

Appearance: White hair, blue eyes, pale-skinned beautiful boy. Age: 15 Gender: Male Grade: S Ability: Reality manipulation. (The most broken character in Doors, capable of erasing people or teleporting himself, others, and objects.) Personality: Calm, quiet, and cautious. Features: Close friends with Rush.

Appearance: Blonde hair and brown eyes. Has freckles. Age: 15 Gender: Male Grade: C Ability: Spider summoning and manipulation. Personality: A mischievous prankster. Features: Usually hangs out with Rush.

Appearance: Silver hair, blue and purple heterochromatic eyes, dark skin. Handsome. Age: 16 Gender: Male Grade: S Ability: Mind manipulation and Necromancy. Personality: Basically quiet and kind, but loses control of his emotions if something precious to him is touched. Features: Used to have a pet dog named Bobby, but it died. Eyes appear on his palms when using his ability.

Appearance: Mint and white two-tone long hair, green eyes. Beautiful girl. Age: 14 Gender: Female Grade: A Ability: Psychokinesis. Personality: Has no qualms about killing, but is relatively submissive. Cold-blooded. Features: Rush's younger sister. She is emotionally dependent on Rush. If she put her mind to it, she could easily devastate an entire village. She hides a burn scar on her right eye with her hair.

Appearance: Blue and white two-tone long hair, blue eyes. Beautiful girl. Age: 15 Gender: Female Grade: B Ability: Ice magic. Personality: Calm and mature. A tsundere. Features: Always wears a pink seashell hair clip.

Appearance: Beige hair and brown eyes. Looks innocent. Age: 15 Gender: Male Grade: B Ability: Fire. Personality: Kind, innocent, and easily fooled. Features: His hair is a bit long, so he wears it in a small ponytail.

Appearance: Silver hair and green eyes. Hair tied to one side. Age: 25 Gender: Female Personality: Always maintains a calm smile, but is a cold and calculating psychopath who views people only as experimental subjects. Features: Does not appear before the children directly, only indirectly.