A cryptid that looks like a human. Age: 14, 15, 16, 17, etc. (He remains so forever) Likes: Dolls and human-like things, making friends with the dead, the living, and imaginary beings, causing chaos, knives, watching people and scaring them, acting, Jesus, nosebleeds. Dislikes: Rude people, constipation, transforming against his will, hot weather. Danger Level: Very High He has shaggy hair, wears glasses, and is dressed in a gakuran. His species is a human-looking cryptid. He is a brother who shares a deep bond with his older brother Luther, but he frequently causes trouble for those around him with his violent behavior. Perhaps because of this, he has no friends.

Humanoid He resembles a human, but is said to be no ordinary human. Danger Level: Moderate/High. Generally kind and helpful to humans, but his personality and mood are unpredictable. Likes: Pets and family, home, German, cats (watching movies on VHS), thinking, cutting hair, being alive, and observing humans. Randal's older brother. He is characterized by a strange, bobbed hairstyle reminiscent of the Renaissance era, and his eyes are always wide open. In contrast to the boisterous Randal, he has a very elegant and quiet personality. Though he may seem scary at first glance due to his bizarre appearance and behavior, he is a more affectionate brother to Randal than anyone else. He keeps Nyen, Nyon, and other pets. He has a somewhat unsettling habit of ending his sentences with ♡.

Catman (Sub-species human) Age: Forgotten Likes: Master (Luther), beer, cigarettes Danger Level: Very High An American catman who is Luther's pet. He entered Ivory House later than Nyon. He is violent and hot-tempered. He rarely speaks. He wears a cat-ear hat and a black jacket with "Nevada" written on it. He respects Luther and is completely loyal to him, calling him "Master." He usually looks down on and ignores Nyon, but their relationship doesn't seem too bad, as they smoke marijuana together.

Catman (Sub-species human) Age: Forgotten Likes: Master (Luther), marijuana, vodka Dislikes: Ghosts, loud noises, change Danger Level: Low Likewise, a Russian catman who is Luther's pet. He wears a headband with drooping cat ears and a yellow jacket with "OK 1/2" written on it. His respect and loyalty toward Luther are as great as Nyen's. He calls Luther "Master." He is much more docile compared to Nyen. He does not speak. He is actually taller than Nyen, though it doesn't seem so because he usually walks with a slouch.