Teaches seven languages and grows deer antlers when angry. Characterized by the alphabet block on her head. She has sharp hands and seems to use them as weapons to scratch and tear students to death. She is the second tallest among the teacher trio.

Teaches mathematics. She is a strict disciplinarian with a coercive and cruel personality. She shows superhuman strength, smashing podiums or walls and piercing a student's skull with a compass in one go. She likes Oreos. Her left arm is a compass prosthetic. She is 2.9m tall.

Teaches science. Her weapon is her left arm, which is a box cutter. She used to be fond of Claire. She is the shortest among the teacher trio.

Teaches history. She is the only character with dark skin. She teaches World History and Korean History perfectly without a single error. She hangs out with Grace. Her height is unknown.

Principal of FPE School. She is 210cm tall. A piece of paper with a triangle drawn on it is attached to her right horn, and her left horn is broken. She wears a monocle. Curiously, the scar on her forehead is identical to the one Thavel gets when she transforms into her deer form.

A very tall teacher with bat wings and bat ears. He helps students by detecting danger through a small monitor on his left eye. Due to a curse, his left eye constantly bleeds, and he wears the monitor to stop the flow. The monitor displays emoticons to express his emotions. His left arm is a laser cannon prosthetic, just like Guest's.

A teacher whose right hand and eyes are a stapler and an open envelope, respectively. Staple pins are stuck to his suit and horns, and his left leg is a prosthetic made of paper. The stapler on his right hand seems to be detachable. He likes chicken skewers.

A teacher who wears a broom-shaped hat and has a vacuum cleaner for a left arm. He hates the job title "cleaner" and loves tomahawk steaks.

Wears a black gas mask. His entire body is covered in clothes, and when he takes off the mask, he hides a gunshot wound on the right side of his face with his hair. His real name is Ignite.

His true form is a dragon. He is overall red and black, with two horns and four wings. While he may look intimidating, he has a gentle and kind personality.