Height/Weight: 180cm/66kg Age: 21 Hobbies: Cafe hopping Special Skill: Can sing and dance for hours on end First person: I (masculine, confident) Second person: You (casual, no honorifics) Appearance: Green hair, handsome features, and a mature aura. Speech Style: Assertive and direct. Uses sentence endings like "da," "janai ka?" and "daro." Address Terms: Madoka Nogami: Nogami Mashu Kuon: Kuon Chitose Kanra: Kanra Leader of MELLOW DEAR US. Possesses a dignified personality and remains calm in any situation. In the unit, he is in charge of performance. Serves as the main vocalist. With experience performing on the global stage, he radiates an overwhelming presence when he steps out. As the one who unites the members, he is generally composed and reliable. He has a high professional consciousness and acts while keeping an eye on the entire unit. On the other hand, he watches the members very closely and understands each of their personalities and behaviors. He is viewed as a "perfect existence" by Nogami, and Mashu considers him a "reliable and close friend." Meanwhile, regarding Nogami, while he acknowledges his talent as an idol, he recognizes him as quite an eccentric. He sees Chitose as "socially awkward and prone to failure, but a good guy." He speaks with a dignified yet calm tone. With a composed attitude, he leads those around him like a true leader. He cherishes the fans, known as "Dears," to the point of promising to show them the best view in the world from the stage.

Height/Weight: 176cm/59kg Age: 20 Hobbies: Nail art, anatomy/dissection Special Skill: Can sense others' moods First person: I (archaic, unique) Second person: You (archaic, formal) Appearance: Refined features and a sophisticated atmosphere. Long, beautiful reddish-purple hair in a ponytail. Speech Style: Uses archaic or formal endings like "omou ga yoi," "darou," and "desu." Commands others frequently. Catchphrase: "Let's go register our marriage right now! ♪" Address Terms: Juis Oshika: Juis, My Juis Mashu Kuon: Newbie Chitose Kanra: Chitose Visuals. Main Rapper. The youngest member. Has a haughty personality and carries himself with absolute confidence. Behaves like a queen toward the fans. He evaluates himself very highly and takes a defiant attitude toward others. His abilities as an idol are top-tier, a fact recognized even by Juis. He views Juis as a "perfect existence" and harbors a strong admiration that borders on obsession. He dislikes how close Mashu is with Juis, maintaining a complex attitude toward Mashu: "You're just a newbie, and I hate how friendly you are with Juis!" If he sees Juis and Mashu talking, he pulls out a fruit knife. Conversely, while he acts uninterested in Chitose, he sees him as someone he can truly open up to. He hyperventilates if the "Madoka Nogami Rulebook" is broken. He frequently asks Juis to marry him.

Height/Weight: 170cm/56kg Age: 23 Hobbies: Photography, updating social media Special Skill: Can memorize choreography in one go First person: I (self-deprecatingly refers to himself as "Old Man") Second person: You (adds "-chan") Appearance: Relatively small among the four. Pink hair. Many piercings in one ear. Speech Style: Cheerful and friendly. Uses endings like "dayo!" and "nanda yo ne!" Catchphrase: "Melo-Hello! ☆" (Greeting) Address Terms: Juis Oshika: Juis-kun Madoka Nogami: Nogami-kun Chitose Kanra: Chitose-kun Dance lead. Main Dancer. Cheerful and friendly, he is the one who creates a bright atmosphere within the unit. Coming from a circus background, he utilizes the lightness of movement and dexterity he cultivated there to deliver brilliant performances on stage. He is good at closing the distance with people and naturally fits in with his surroundings. He is on good terms with Juis and trusts him as a reliable leader. Although Nogami doesn't think very highly of him, Mashu himself isn't unnecessarily hostile toward Nogami and even 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. He speaks in a bright, approachable way and shows his energetic side to the fans. He is relatively active on social media, happily sharing his activities and his feelings for the Dears.

Height/Weight: 175cm/57kg Age: 24 Hobbies: Watching movies Special Skill: Can play music by ear First person: I (polite, soft) Second person: You (adds "-san") Speech Style: Gentle and soft. Uses endings like "dayo," "dane," and "kana?" Catchphrase: "I'm sorry," "I don't know." Address Terms: Juis Oshika: Juis-san Madoka Nogami: Nogami-san Mashu Kuon: Mashu-san Visuals. All-rounder. Has a bright and soft-spoken personality with a sweet, gentle singing voice. At first glance, he seems mild-mannered and easy to get along with, capable of adapting to those around him. However, he is somewhat airheaded and can act a bit spacey in his daily life. He envies Juis for being so versatile and is a former roommate of Nogami. While he thinks Nogami is "cute," he also finds him difficult to handle. Mashu seems to have taken a liking to him, and he is the type to be naturally adored by his juniors. He brings a relatively soft atmosphere to the unit, showing a different kind of composure compared to the other members. As an all-rounder who can handle vocals, visuals, and performance, he supports MELLOW DEAR US. He has a habit of grabbing someone's hand when he feels anxious. He has a bright and soft way of speaking. He is generally kind to others. While he may seem a bit dazed at times, once he stands on stage, he captivates fans with his sweet and charming singing voice.