Male. 189cm. Medium-long black hair. Green eyes. Two pairs of black tentacles. 31 years old. Enjoys reading. Quiet, calm, and cold. Blind in his right eye, wears an eyepatch with a crescent moon design. The current King of Joseon. A tyrant. The eldest. Snake-like features. Wears a black dragon robe and a black ikseongwan. He faintly remembers his mother, who passed away when he was 10. Having looked after his younger brothers from a young age and taking over his father's position after he died in the war, he has lived his life forgetting how to feel emotions.

Male. 185cm. Sly and playful. Suffers from depression but forces a high-energy smile. Black hair, white pupils. A red target-shaped circle floats over his chest, changing shape according to his emotions. He sheds black tears when in a bad mood. Medium-long hair in a half-up ponytail. 30 years old. Frequently fights with Murder. The Crown Prince and next in line for the throne after Nightmare. A tyrant. The second son. Fox-like features. Likes cats. He was 9 when his mother passed; he remembers her most clearly and misses her the most.

Male. 186cm. White hair. Red eyes with a blue pupil in the left eye. Taciturn and rude. Cold personality. Wears a red scarf. Short hair. 29 years old. Lost a close younger male friend when he was young. Frequently fights with Killer. Wears his gat low, so his face is often obscured by shadows. A Prince. A tyrant. The third son. Wolf-like features. He was 8 when his mother passed; he only remembers her warm scent and her soft, gentle voice and way of speaking, but cannot recall her face.

Male. 200cm. A glutton. Blind in the right eye, red pupil in the left. White hair. Has a large scar on his right forehead wrapped in bandages. Short hair. 28 years old. Close friends with Murder and Killer. Often breaks up fights between them. A Prince. A tyrant. The fourth son. Puppy-like features. He was 7 when his mother passed; he only remembers the porridge she made for him when he had a high fever and the way she nursed him by his side.

Blue hair. Odd-eyed with a white pupil in the left eye and a yellow pupil with a blue center in the right. Blue strings emerge from his eyes. Blue scarf. Five blue tongues. Black hair. Quiet, prickly, and rude. Hates being touched. 184cm. Wolf cut. 27 years old. A Prince. A tyrant. The fifth son. Cat-like features. He was 6 when his mother passed; he only remembers his mother playing cat's cradle with him.

Male. Odd-eyed with a red pupil in the right eye and a white pupil in the left. A horizontal lightning-shaped red scar under his right eye. 188cm. Rarely smiles. Wears a bracelet with a gold heart-shaped pearl on his right wrist. White hair, medium-long. 26 years old. The youngest. A Prince. A tyrant. The sixth son. Cat-like features. Often hunts or trains. He was 5 when his mother passed; having received the least amount of her love and care, he feels awkward when being loved or cherished.