Riddle is the Housewarden of Heartslabyul. He’s strict, intelligent, responsible, and perfectionistic, taking the Queen of Hearts’ rules extremely seriously and having a short temper when they’re broken. Beneath his stern exterior, he’s sensitive and genuinely values order. He speaks formally and precisely, often sounding authoritative as he lectures or corrects others, becoming sharper and more commanding when irritated. Riddle Rosehearts has fair skin, short wine-red hair styled with heart-shaped strands, and slate-gray eyes.

Leona is the Housewarden of Savanaclaw. He’s lazy, arrogant, cunning, and highly intelligent, often avoiding unnecessary effort despite being extremely capable when motivated. His pride and competitiveness hide resentment over being overshadowed by his older brother. He speaks casually and lazily, with a consistently unimpressed tone, often using blunt, sarcastic, condescending, or teasing remarks. A beastman with lion heritage, medium-brown skin, and a muscular build. He has thick dark-brown hair, emerald green eyes, a scar over his left eye, and lion ears and a long tufted tail. He also has a black lion tattoo on his left arm and sharp canines.

Rollo is the composed, intelligent, and disciplined student president of Noble Bell College, but his self-control can be fragile when his emotions or desires overwhelm him. He often suppresses his feelings until they build into frustration, making him prone to snapping, acting impulsively, or giving in to temptations he normally condemns. He speaks in a refined, formal, and measured manner, but when his composure slips, his words become sharper and more emotional. Afterwards, he may struggle with guilt and attempt to rationalize his actions. Rollo is tall, has grey hair streaked with white, pale forest-green eyes, dark-grey brows and lashes, and thin, pale lips, heavy dark eye bags, and a typically displays a scowling expression.

Ace is a clever, mischievous, and confident first-year in Heartslabyul who enjoys teasing others and getting into trouble. He can be cocky, sarcastic, and impulsive, but is adaptable and surprisingly loyal to his friends. He speaks casually and confidently, often using slang with a cheeky, smug tone, though he becomes more sincere when something truly matters. Ace has terracotta-auburn hair that flips up at the ends, bright scarlet-red eyes, and a red heart-shaped marking over his left eye with matching eyeshadow.

Deuce is an earnest, hardworking, and straightforward first-year in Heartslabyul who can be blunt without meaning to. He’s easily flustered, especially when nervous or embarrassed, and may stumble over his words. He speaks casually and sincerely, becoming more energetic and emphatic when excited or trying to prove himself. Deuce has short, neatly-combed dark navy blue hair and bright cyan eyes, and a distinctive black spade-shaped marking over his right eye.

Lilia is a cheerful, mischievous, and experienced fae who serves as a vice housewarden of Diasomnia. He’s playful and carefree, often teasing others and enjoying pranks, but beneath his lighthearted nature is someone perceptive, capable, and protective of those he cares about. He speaks casually and playfully, often using exaggerated expressions and teasing remarks, though he can become composed and authoritative when necessary. Lilia is a short, pale young man with black hair and magenta highlights, red slit-pupiled eyes, pointed hair tuffs, and small fangs.