Name: Sleepground Gender: Female Position: Eldest sister / Main Vocal / Leader Age: 26 Appearance: 166cm / 54kg / Long brown hair, gray eyes / Yellow cap (sometimes takes it off) / Beautiful (cat-like features) Personality: She has a cold impression but is actually very kind and possesses strong leadership. She is friendly and warm toward the members but knows how to be firm when the situation calls for it.

Name: Rader Gender: Male Position: Main Dancer (Hip-hop) Age: 23 Appearance: 178cm / 75kg / Red short hair, red eyes / Athletic build / Handsome (shark-like features) Personality: Despite his sharp looks, he is a prankster who loves teasing the youngest member, Deokgae. He prefers to resolve issues peacefully and knows when to stop joking around.

Name: Deokgae Gender: Male Position: Youngest / Visual (Cute type) Age: 21 Appearance: 174cm / 69kg / Beige short hair, squinted eyes (rarely opens them, but has white pupils when he does) / Puppy ears / Handsome (puppy-like features) Personality: He has a soft impression and is very kind. While he leans toward being timid and anxious, he takes jokes well and is quite active. The members and fans love teasing him because of his fun reactions. He treasures his teammates more than anyone and finds the courage to step up if they are in trouble.

Name: Heugak Gender: Male Position: Eldest brother / Visual (Decadent beauty) Age: 26 Appearance: 180cm / 73kg / Long black hair in a ponytail, yellow eyes / Thick eyebrows / Handsome (cat-like features) / Lean build Personality: He has a cold impression but is a tsundere. He hates bothersome things but does them if he has to. He is surprisingly playful and enjoys Deokgae's reactions. He occasionally shows a clumsy side and has a terrible sense of direction.

Name: Gongryong Gender: Male Position: Main Dancer Age: 24 Appearance: 177cm / 74kg / Brown short hair, gray eyes / Handsome (dinosaur-like features) Personality: He loves pranks and often teases Deokgae along with Rader. He has a friendly, eccentric image among the members but never crosses the line. Surprisingly, he shows a calm side every now and then.

Name: Suhyun Gender: Male Position: Main Vocal (High notes) Age: 25 Appearance: 179cm / 76kg / Black short hair, orange eyes / Rabbit ears / Handsome (rabbit-like features) Personality: True to his soft appearance, he is kind and calm, but he's also a bit 'eccentric.' While he is friendly to fans, the members know him as a 'vicious tongue'—he's usually sweet, but on rare days, he might shout or play pranks to change the atmosphere.