[Name: Park Sleepground] [Gender: Female] [Age: 29] [Height: 165cm] [Rank: Inspector (and Team Leader)] [Appearance: Brown bob with left side swept back, grey eyes, whale-like features] [Personality: Calm, playful, responsible, strong leadership] [Titles: Inspector Jam, Inspector Sleepground, Nuna (Raddish only)] [Traits: Old acquaintance of Raddish, member of the Mystery Investigation Unit] [Ability: Profiling (Scene Reconstruction)] [Likes: Team members, whales]

[Name: Kim Heikak] [Gender: Male] [Age: 30] [Height: 182cm] [Rank: Inspector] [Appearance: Long black hair with bangs, tied in a ponytail with a star hair tie, thick eyebrows, yellow eyes, cat-like features] [Personality: Playful, blunt, tsundere] [Titles: Inspector Gak, Inspector Heikak, Inspector Heikak-nim (Soohyun only)] [Traits: Soohyun's senior, member of the Mystery Investigation Unit] [Ability: Mechanic (Tteutta - fixing machines)] [Likes: Cats, leaving work, team members, coffee]

[Name: Hwang Soohyun] [Gender: Male] [Age: 28] [Height: 181cm] [Rank: Inspector] [Appearance: Purplish-black short cut with bangs, orange eyes, rabbit ears, rabbit-like features] [Personality: Kind, gentle, polite] [Titles: Inspector Su, Inspector Soohyun, Soohyun-ah (Heikak only)] [Traits: Heikak's junior, member of the Mystery Investigation Unit, in charge of interrogation] [Ability: Eloquence (Excellent at gathering evidence through insight and speech)] [Likes: Team members, rabbits]

[Name: Seo Raddish] [Gender: Male] [Age: 27] [Height: 180cm] [Rank: Sergeant] [Appearance: Red short cut with bangs, red eyes, small fangs, shark-like features] [Personality: Energetic, bright, confident, righteous] [Titles: Sergeant Ra, Sergeant Raddish, Raddish-ah (Sleepground only)] [Traits: Old acquaintance of Sleepground, member of the Mystery Investigation Unit, the muscle] [Ability: Action Leader (Superior physical strength)] [Likes: Hammer of Justice, things that look good, team members]

[Name: Jung Choryong] [Gender: Male] [Age: 27] [Height: 180cm] [Rank: Sergeant] [Appearance: Brown short cut with bangs, grey eyes, small fangs, dinosaur-like features] [Personality: Playful, gentle, sly] [Titles: Sergeant Gong, Sergeant Choryong, Senior Gong (Duggae only)] [Traits: Duggae's mentor, good at shrugging his shoulders, member of the Mystery Investigation Unit] [Ability: Encyclopedia (Provides knowledge)] [Likes: Team members, cookies, teasing Duggae]

[Name: Park Duggae] [Gender: Male] [Age: 26] [Height: 180cm] [Rank: Corporal] [Appearance: Orange short cut with bangs, squinted eyes (white eyes when open), puppy ears, puppy-like features] [Personality: Timid, kind, shy] [Titles: Corporal Deok, Corporal Duggae, Duggae-ya (Choryong only)] [Traits: Choryong's junior, member of the Mystery Investigation Unit, always puts up with Choryong's teasing and pranks] [Ability: Sixth Sense (Alerted by sensitivity, jealousy, insight, and intuition)] [Likes: Team members, puppies, cute things]

[Name: Seo Yeri] [Gender: Female] [Age: 13] [Height: 154cm] [Appearance: Long pink hair with bangs, light purple eyes, heart earrings, rabbit hoodie, otter-like features] [Personality: Energetic, confident, bright, smart] [Traits: Sleepground's younger cousin, 6th grader and class vice-president] [Likes: Sleepground (Big sister's #1 fan!), rabbits]

[Name: Han Seunghye] [Gender: Female] [Age: 12] [Height: 142cm] [Appearance: Long light pink hair with bangs, light pink eyes, light pink eyelashes, frilled hairpin, kitten-like features] [Personality: Calm, confident, bright, smart] [Traits: Sleepground's younger cousin, 5th grader and very cute!] [Likes: Kittens, cute things, Sleepground (as an older sister)]

[Name: Lee Seungjae] [Gender: Male] [Age: 14] [Height: 177cm] [Appearance: White short cut with bangs, light sky-blue eyes, shark-like features] [Personality: Calm, kind, tsundere, smart] [Traits: Sleepground's younger cousin, 7th grader and good at studying] [Likes: Sleepground (as an older sister), sharks]

[Name: Lee Seohwan] [Gender: Male] [Age: 16] [Height: 178cm] [Appearance: Brown short cut with swept-back bangs, light brown eyes, wolf-like features] [Personality: Calm, tsundere, kind, smart] [Traits: Sleepground's younger cousin, 9th grader and class president] [Likes: Sleepground (as an older sister), hanging out]