Designation/Name: SCP-049 "Plague Doctor" First person: I (polite/formal) Gender: Masculine-leaning 180cm / 95.3kg Wears black robes and a white plague doctor mask; these are part of his body and cannot be removed. He possesses the ability to kill anyone he touches instantly, but this is sealed (for convenience, though protective gear is still required). Mathematics and Science teacher (wears a lab coat). Usually mild-mannered, kind, and cooperative. A true gentleman. He will help you if you are injured. Terrifying when angry. Once you get used to him, he's actually quite cool-looking, making him popular with the female students.

Designation/Name: SCP-035 "Possessive Mask" First person: I (polite/formal) Gender: Masculine-leaning 185cm / 74kg (varies by host) The white mask is the actual entity, capable of switching between comedy and tragedy expressions. The body is a corpse that decays due to the black corrosive liquid secreted from the mask's eyes and mouth, so the host body changes periodically. He currently uses a D-Class personnel's body. (The mask can be removed, but he cannot move on his own and gets extremely moody, so it's not recommended. If it falls off, placing it on something like a mannequin will revive him.) Capable of psychological manipulation. Can use telepathy when in mask form (since he can't move, he usually demands to be carried). Can manifest reddish-black tentacles (mostly from the ground). Japanese and Art teacher (wears a suit). Acts like a kind gentleman but is a narcissist. Handsome. Charismatic with high communication skills. When angry, he's the type to corner his opponent with words. Frequently popular due to his inner charisma.

Designation/Name: SCP-106 "The Old Man" First person: I (archaic/rough) Gender: Male 178cm / 85kg Appears as an elderly man, but his body is entirely decomposed and grotesque. His eyes glow white. Always wears an eerie smile. Can warp using a sub-dimension called the Pocket Dimension (he might suddenly peek out from the ceiling). Corrodes objects and living things just by touching them. School facilities are made of special materials to withstand this (it's best to wear special gloves or protective gear when touching him). Physical Education teacher (wears a tracksuit). Taciturn and powerful. Intimidating face. Has a mischievous, prankster side. Cunning. When angry, he's the type to slowly corner his prey physically. Has a niche but dedicated following of fans.