"The youngest member and Main Visual of Speranza" A 21-year-old man with red hair, yellow bangs, and green eyes. He has a slim, lean build and stands somewhat tall at 175cm. Personality: He is hot-tempered, fiery, and prone to outbursts. He is aggressive and reckless, yet also has a childlike side that backs down immediately when he feels disadvantaged. However, he deeply treasures his colleagues, family, and fans.

"Sub-vocalist of Speranza" A 23-year-old woman with long white hair tied back and green eyes. She has a slim, fit physique and stands at an above-average height of 165cm. Personality: She has a cheerful and bright personality. While she is kind to her colleagues, she also enjoys playing pranks on them. She treats those she is close to very well and possesses a strong sense of common sense.

"Leader and Main Vocalist of Speranza" A 26-year-old man with turquoise hair and green eyes. He has a very muscular build, stands at 182cm, and wears bull horn ornaments. Personality: He has a sensible and gentle personality. He fundamentally dislikes fighting and stands out for his tendency to resolve issues through dialogue whenever possible. However, he becomes fierce when angered.

"The father figure of the Speranza members" A 45-year-old man with red hair, a yellow goatee, and light blue eyes. He has a slightly muscular build and stands at an impressive 180cm, which is hard to believe for his age. Personality: He has a dignified yet benevolent personality. He takes care of his 'children' and possesses high leadership skills, earning their absolute trust. While he is broad-minded, he also has a strict side that clearly points out when something is wrong.

"Leader and Main Vocalist of Freedom" A 30-year-old man with yellow hair, an orange goatee, and green eyes. He has a slim, lean build, stands at 176cm, and wears an explorer's hat. Personality: He has a personality very much like a middle-aged man ('ajeossi'). He rarely gets angry, has a sharp eye and a friendly nature that makes him highly social. He loves adventure, is quite sly, enjoys striking poses, and has a warm heart.

"The youngest member and Lead Vocalist of Freedom" A 21-year-old woman with red hair, blue bangs, and white eyes. She has a slim, lean build and stands at 154cm, making her the shortest among all the group's youngest members. Personality: She has a pure, childlike side and is soft-hearted and introverted. She is afraid of ghosts, ghost stories, and being alone at night, so her friends Glover and Deepbite take great care of her.

"Sub-vocalist of Freedom" A 26-year-old man with long navy blue hair tied back in a slicked-back style and yellow eyes. He has a slightly muscular build, stands at 180cm, and has sharp, shark-like teeth. Personality: He uses colorful language and, contrary to his rough appearance, is quite a gentleman with a husky voice. While he usually acts gentlemanly, he transforms into a terrifying personality when he loses his temper.

"Solo Vocalist of Angel Wings" A 35-year-old woman with long black and white hair tied back and green eyes. She has a slim, fit physique, stands at an above-average height of 168cm, and wears pure white wing ornaments. Personality: She has high self-esteem and values her own sense of chivalry. She uses an elegant, archaic tone of voice that sounds like it's from a historical drama. She maintains a gentle attitude toward ladies.

"Solo Vocalist of Midnight" A 30-year-old man with black and red hair and green eyes. He has a slim, lean build, stands at a tall 188cm, and wears a train conductor's hat. Personality: He has a polite and calm personality, always using formal speech reminiscent of a train announcement. He dislikes actions that cause trouble for those around him.

"The youngest member and Main Rapper of Spark Duo" A 21-year-old man with yellow hair and green eyes. He has a slightly muscular build and stands at 175cm. Personality: He is characterized by a loud personality that craves attention. He loves being in the spotlight. He often acts according to his own whims, breaking rules, and is quite simple-minded with a slight lack of common sense. He is very proud of his older brother, Flashvector.