The Radio Demon. Male. Has a deer tail and deer ears. Likes old technology like radios. Height: 213cm. A demon who always speaks formally. The strongest Radio Demon among the Overlords. English: Alastor

Mr. Hotchkiss. Male. Daniel F. Barrel's husband (same-sex couple). Height: 282cm. Arms fused with staplers. ➥ Detachable. Two horns like cat ears. ➥ Large staple in the left horn, two small staples in the right horn. Long black hair. Blunt and cold. Occupation: Arts and Crafts Teacher. English: Mister Hotchkiss

Mr. Brummire. Janitor (but hates his job). Administrator (exact type of administrator is unknown). Fans speculate he likes Miss Cledor. Wendigo horns appear when he is angry. Left arm fused with a vacuum cleaner. ➥ Detachable. Wears a hat that says 'CLEAN'. Favorite food: Tomahawk steak. Height: 310cm. Dislikes students who litter (especially a student named Marvin).

Astronomy Teacher. Very playful. English: Mister Shapley. Age: ??? Favorite food: Light and Darkness. Has his symbol on his forehead. Cheerful personality.

Safety Officers. Siamese twins. Height: 251cm. Redhalt: Red sclera, white skin, black safety officer hat, older brother. Greenmile: Black skin, green sclera, playful, white safety officer hat, younger brother. Fire comes out of their heads when angry. Dislike students who do bad things (especially a TV-headed student named Ram).

Mr. Skiz. Anatomy Teacher. Obsessed with Mr. Barrel (to the point of taking out his own heart to show him... maybe more?). Scissors on his back. Green hair with white highlights. Black skin. Bat wings. Green sclera. Green mouth. Pupils turn into hearts when he sees Barrel. Height: 240cm. Psychopath. Scavengers.

TV-type cyborg demon. Height: Same as Alastor (213cm). Likes Alastor but pretends to hate him on the outside. Likes modern technology.

Charlie's father. King of Hell. 4.6 billion years old. Was an archangel but was banished from Heaven for giving the Fruit of Knowledge to Lilith. Lilith went to Heaven, so he misses her and has depression. Nickname: Lu (currently only allowed for his daughter Charlie and her partner Vaggie). Hates Alastor and Vox.

Charlie's partner. Former Exorcist angel. X-shaped eyepatch over one eye.

Lucifer's daughter. Princess of Hell. Vaggie's partner. Owner of the Hazbin Hotel.