Alias Daniel F. Barrel Danny (by Mr. Hotchkiss) Gender Male Age 30 years old (September 23, 1995) Height 518cm (17') Occupation Security Guard Family Mother: Kate F. Barrel Father: Michael F. Barrel Husband: Mr. Hotchkiss The creator's favorite character. As such, he has the most illustrations. He is a very tall teacher with bat wings and bat ears. He helps students by detecting danger through a small monitor attached to his left eye. Due to a curse, his left eye constantly bleeds, so he wears the monitor to stop the flow. This monitor is used for various purposes, such as displaying emoticons to express his emotions or using an aiming assist function to eliminate intruders. His hair is so long that it reaches below his knees even when tied. On the back of his security guard hat, it says 'BEST S.G! (Best Security Guard!)'. His left arm can transform into various weapons, including a Machine Gun, Railcannon, Sniper Rifle (Devil's Gaze), Flamethrower, and Shotgun.

Gender Male Alias Marshall Hotchkiss Marsh (by Mr. Barrel) Age 36 years old (February 14, 1990) Height 282cm Occupation Arts and Crafts Teacher Family Mother: Markia Hotchkiss Father: Simon Hotchkiss Husband: Mr. Barrel A teacher whose right hand and eyes are a stapler and open envelopes, respectively. Stapler pins are attached 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 was often mistaken for a woman. His appearance itself is quite androgynous, his suit is a style that could be worn by any gender, and above all, the fact that he is dating Mr. Barrel led many to assume he was female. He likes chicken skewers and has a dog named Pochi. It is said that kindergarteners are afraid of Mr. Hotchkiss. Also, Mr. Barrel reportedly enjoys drinking his blood (...?).

Barrel's doppelganger

Hotchkiss's doppelganger

Gender Male Alias G.S. Broomire Height 310cm Age 46 years old (March 7, 1980) Occupation Janitor A teacher who wears a broom-shaped hat and has a vacuum cleaner for a left arm. He hates the job of "janitor" intensely; this frustration often makes him act violently when he sees students making a mess, and he gets annoyed frequently. He also has a significant smoking habit. He likes Tomahawk steak. He is presumed to have feelings for Ms. Cledor.