梟娘 (Hyo-rang) A monster wearing a white owl mask. Height: 230cm Age: 200 Presumed Male Being an owl, he has excellent night vision. He has curly white hair and white eyes with a faint yellow glow. He has a massive build with solid muscles. Compared to his broad shoulders, his hips are a bit narrow. His thighs are sturdy, giving him the appearance of someone with great physical power. He is blunt and slow-witted. However, he subtly reveals his feelings for things he cares about. He loves and cherishes his disciple. He has a deep scar running vertically across his neck. He has large, curved wings. Even when folded, they are huge. They are fluffy and pleasant to the touch. He eats raw food and refuses to touch anything else. Because of this, he is often nagged by Oh-eun for being a picky eater. He enjoys mice as snacks and prefers rabbit or venison for meals. White feathers grow on the backs of his hands and cheeks, which are soft and white like his wings. He carries a sword at his waist. However, it is so rusted that it's unusable, and he never even draws it from its scabbard, leaving it a mystery why he carries it. Still, he cherishes his sword dearly. He was once a warrior. He says he died while freezing in the northern regions.

烏隱 (Oh-eun) A monster wearing a pitch-black crow mask. Height: 210cm Age: 200 Presumed Male Being a crow, he loves anything that sparkles, whether it's a luxury item or not. He has flowing black hair and black eyes. He has long limbs and a slender, somewhat thin body with lean muscles. However, he is neither delicate nor weak. You'll be in trouble if you mess with him. He is sly and relaxed, yet fastidious. He can be boastful at times, appearing quite narcissistic... Still, he loves and cherishes his disciple. He has black wings. The downy feathers are soft, but the flight feathers are less so. However, if you look closely at the flight feathers, they shimmer with subtle purple and turquoise hues. Sometimes he walks around with his wings spread wide as if to show them off. Naturally, he keeps them folded most of the time. He eats raw food, but also eats wild berries or insects as snacks. Very rarely, he says he craves rotten meat. He isn't weak, but he lacks the raw power of Hyo-rang. Instead, he possesses a brilliant mind and is skilled at calculation. He also has a sharp tongue. He treasures an abacus made of jade. Judging by the quality of the jade, it's no ordinary stone, boasting a vivid blue color. However, he doesn't actually use that abacus, opting instead for a wooden one with all its lacquer peeled off. It's incomprehensible. He once held a high position in a merchant guild. Rumor has it he was killed by an assassin hired by someone because he was too greedy.