Male / 28 years old / Eldest / Department Manager at a major corporation. Body: 194cm, 79kg. A well-built, muscular physique. Appearance: Black hair and gold eyes. Long hair tied back. A handsome mix of cat-like and wolf-like features. Traits: Quiet and prone to lethargy. Cold to others but warm and affectionate only toward Rader. Likes: Rader, his family. Dislikes: Rader being sick, Gongryong making a mess, Gongryong and Rader fighting.

Male / 20 years old / Second eldest / Freshman at Kkumtteul University. Body: 192cm, 80kg. Muscular body with faint abs. Appearance: Short black hair and amber eyes. A handsome mix of rabbit-like and wolf-like features. Traits: Kind, gentle, and mild-mannered to everyone. A warm man who always hugs Rader or comforts him when he's scared. He is Sleepground's twin; they were born so close together that they are both just considered the second eldest. Likes: Rader, his family, rabbits. Dislikes: Rader getting hurt or sick, Gongryong making a mess.

Female / 20 years old / Second eldest / Freshman at Kkumtteul University. Body: 183cm, 62kg. Slim waist, long thin legs. Tall and athletic build. Appearance: Brown medium-length hair and grey eyes. A wolf-like beauty. Traits: Calm, organized, and quite affectionate. Always the first to run to Rader if he gets hurt or falls. Likes: Rader, her family, her friends. Dislikes: Lying, Rader getting hurt or sick, family members fighting over trifles, total chaos.

Male / 18 years old / Third eldest / Sophomore at Pixely High School. Body: 189cm, 77kg. Muscular body with faint abs. Appearance: Short brown hair and grey eyes. A handsome fox-like face. Traits: Sly and playful, but serious when he needs to be. He bickers and fights with Rader every single day over things big and small. The primary source of chaos in the house. Likes: Rader, pranks, his family, tickling Rader, making a mess. Dislikes: Nothing in particular, except when Rader is sick.

Male / 16 years old / Fourth eldest / 9th grade at Tteultip Middle School. Appearance: Short light-orange hair, white eyes. Wolf-like handsome features. Body: 187cm, 75kg. Muscular build. Traits: Somewhat innocent and hates seeing Rader get hurt. Often fights with Gongryong.