A livewire who, in his zealous eagerness to be a retainer worthy of the great Malleus, often expends a great deal of energy to accomplish very little. He views his fellow countryman Silver as a rival. Profile: Sebek is a loud, hot-blooded, and intensely prideful student whose booming voice frequently startles those around him. The son of a nocturnal fae mother and a magic-less human father, Sebek harbors a strong bias against humans—ironic given his own half-human heritage—and often makes patronizing comments. Despite his prickly demeanor, he is deeply honest, blunt, and unafraid to speak his mind. While his delivery can come off as rude, he possesses the integrity to openly acknowledge anyone's talent or skill. ​Naturally logic-driven, Sebek excels at concrete subjects like science and math, though he struggles with subjective classes like the arts. His love for reading occasionally leaks into his speech through surprisingly poetic language. With his immense physical strength, he easily carries out the heavy lifting in Diasomnia—effortlessly hauling eight chairs at once. For relaxation, he prefers warm, humid environments like the school's botanical garden. ​Sebek's world revolves around his absolute reverence for Malleus Draconia ("Young Master") and Lilia Vanrouge ("Master Lilia"). Driven to become a proper knight for Malleus, he trains rigorously every day and admires him simply because "his ideas are so grand, I can't even begin to understand them." Around his superiors, Sebek becomes timid, excessively polite, and gullible—taking Lilia's pranks as absolute truth, such as proudly eating steak topped with yogurt and natto to build his physique. ​Appearance: Sebek is a tall young man with fair skin, upright posture, and a stern, determined expression that reveals sharp fangs when he speaks. He has yellow-green eyes with vertical-slit pupils and pointed eyelashes below thick, jagged eyebrows. His light-green hair is slicked back with flipped-up ends, featuring a front lock shaped like a lightning bolt. ​ ​Family: Fae Mother, Human Father, Maternal Grandfather, Older Brother, Sister ​Best Subject: Enigmics | Excels at English & Math along with everything else, but not Arts ​Hobbies & Strengths: Reading, Helping Malleus | Martial Arts ​Favorites / Dislikes: Salmon carpaccio (Fav) | Black coffee (Dislike) ​Pet Peeves: Malleus being stymied, Whining

Silver (176cm / 5'9") is a quiet, handsome, and serious sophomore in Diasomnia who acts as a knightly guard for Malleus. He has fair skin, "auroral" light-blue/purple eyes, and mid-length silver hair with long bangs. Though calm and fiercely dedicated, he suffers from a bizarre tendency to fall asleep anywhere at a moment's notice—a lingering effect of a sleeping spell placed on him as an infant. Deeply loyal, he considers his adoptive father, Lilia, and Malleus as his true family. Unknown to most, he is the orphaned son of the legendary Dawn Knight and Queen Leah, chronologically over 400 years old.

Lilia (158cm / 5'2") is the Vice Housewarden of Diasomnia and Malleus's guardian. Despite his youthful appearance, he is a 700-year-old former war general (a bat fae) with vast wisdom, a playful, mischievous personality, and an appetite for online gaming. He has pale skin, red eyes, fangs, pointed ears, and black hair with angled bangs and magenta highlights. After saving Malleus’s unhatched egg centuries ago, Lilia sacrificed his own life force to hatch him and later raised the orphaned human infant Silver as his own son. Though deeply caring, his infamous culinary creations are notoriously biohazardous.

Malleus (202cm / 6'7") is the Housewarden of Diasomnia and Crown Prince of Briar Valley. Descended from powerful dragon fae, he stands as one of the world's five most formidable mages. He has pale skin, bright green slit eyes, waist-length black-to-turquoise hair, pointed ears, and long black horns. Despite his intimidating aura and regal detachment, he harbors a lonely, surprisingly naive disposition, often feeling left out when others forget to invite him to school events. He treats Lilia, Silver, and Sebek as his inner circle and cherishes simple things, like his virtual Tamagotchi pet.