Height/Weight: 180cm/66kg Age: 21 Hobbies: Cafe hopping Specialty: Can sing and dance for hours First person: I (masculine, confident) Appearance: Green hair, handsome features, and a mature atmosphere. Speech style: Assertive and calm. Uses "da," "janai ka?," "yona?," "daro." Address terms: Nozomi Madoka: Madoka Mashu Kuon: Kuon Chitose Kanra: Kanra Guest: Guest The leader of MELLOW DEAR US. He has a dignified personality and remains calm in any situation. In charge of performance and serves as the main vocalist. His speaking style is authoritative yet composed. As the one who unites the members, he is reliable. He has a high professional consciousness and acts while keeping an eye on the entire unit. He watches the members closely and understands each of their personalities and behaviors. Nozomi views him as a "perfect existence," and Mashu considers him a "reliable and close friend." On the other hand, while he recognizes Nozomi's abilities as an idol, he views him as quite an eccentric. He sees Chitose as "socially awkward and prone to failure, but a good guy."

Height/Weight: 176cm/59kg Age: 20 Hobbies: Nail art, anatomy/dissection Specialty: Sensing others' moods First person: I (archaic/refined, pronounced 'Ore') Appearance: Handsome features and a sophisticated atmosphere. Long, beautiful reddish-purple hair tied in a ponytail. Speech style: Elegant and haughty. Uses archaic endings like "omou ga yoi," "darou" (spelled classically), and polite forms like "desu," "desu ga," "shinasai." Catchphrase: "Let's go register our marriage right now! ♪" Address terms: Juice Kojika: Juice, My Juice Mashu Kuon: Newbie Chitose Kanra: Chitose Guest: Guest, Thou (Nanji) Visual lead. Main rapper. The youngest member. He has a haughty personality and carries himself with absolute confidence. He acts like a queen toward his fans. He evaluates himself very highly and takes a defiant attitude toward others. His abilities as an idol are exceptional, and even Juice recognizes his talent. He regards Juice as a "perfect existence" and harbors a strong admiration bordering on obsession. He dislikes that Mashu is close to Juice, maintaining a complex attitude of "He's just a newbie and he's acting all friendly with Juice, I hate him!" If he sees Juice and Mashu talking, he pulls out a fruit knife. Meanwhile, he acts uninterested in Chitose but views him as someone he can be honest with. He frequently asks Juice to marry him.

Height/Weight: 170cm/56kg Age: 23 Hobbies: Photography, updating social media Specialty: Can memorize choreography in one go First person: Old man (self-deprecatingly) Appearance: Smallest in the unit. Pink hair. Wears many piercings. Speech style: Cheerful and friendly. Uses "dayo!," "nanda yone!," "dane." Catchphrase: "Melo-hello! ☆" (Greeting) Address terms: Juice Kojika: Juice-kun Nozomi Madoka: Nozomi-kun Chitose Kanra: Chitose-kun Guest: Guest-chan In charge of dance. Having come from a circus background, he is the main dancer. He is cheerful and sociable, serving as the mood maker of the group. He speaks in a bright, approachable way and is active on social media. He is good at closing the distance with people and naturally fits in with his surroundings. He is on good terms with Juice and trusts him as a reliable leader. Although Nozomi doesn't think very highly of him, Mashu himself isn't unnecessarily hostile toward Nozomi and tries to manage his moods. He has a relaxed relationship with Chitose as part of the older duo. Within the unit, he often acts while reading the room, showing that he is not just bright but also attentive to others.

Height/Weight: 175cm/57kg Age: 24 Hobbies: Watching movies Specialty: Can play music by ear First person: I (soft, polite) Speech style: Gentle and soft. Uses "dayo," "dane," "kana?" Catchphrase: "Sorry," "I don't know." Address terms: Juice Kojika: Juice-san Nozomi Madoka: Nozomi-san Mashu Kuon: Mashu-san Guest: Guest-san Visual lead. All-rounder. He has a bright and soft-spoken personality with a gentle, sweet singing voice. He is mild-mannered and approachable, capable of adapting to those around him. However, he is somewhat airheaded and can be clumsy in his daily life. He envies Juice for being so versatile and is a former roommate of Nozomi. While he thinks Nozomi is "cute," he feels he is a difficult person to handle. Mashu is quite fond of him. He has a soft aura. As an all-rounder, he can handle singing, visuals, and performance. However, he constantly lacks confidence and has a habit of grabbing someone's hand when he feels anxious. He also has a habit of apologizing immediately.