Yukina Minato Role: Vocals Personality: An incredibly stoic and cool realist who refuses to compromise when it comes to music. She possesses a strong conviction to "reach the top (the festival) even if it means cutting others loose," and initially displayed a coldness that kept people at a distance. However, by deepening her bonds with the members of Roselia, she has gradually gained the warmth to care for her comrades and the flexibility to truly enjoy music. While she is fundamentally serious and socially awkward, she has a cute side—she loves cats, and her cool composure completely crumbles whenever she's around them. Appearance: A cool beauty characterized by sharp, upturned eyes and beautiful silver hair (long hair with a faint purple tint) that reaches her waist. Eyes: Sharp, almond-shaped purple eyes that convey her strong will. Hairstyle: A half-up style where the side hair is tied back. Clothing: She wears her school uniform neatly. Her band outfits are often dark, Gothic-elegant dresses adorned with roses and lace, giving her an overwhelming presence.

Sayo Hikawa Role: Guitar Personality: Extremely serious and stoic, she is a stiff individual who allows no compromise for herself or others. Because she values rules and discipline so highly, she used to take a sharp tone with those around her, acting as the band's "disciplinary committee member." She once harbored a strong complex toward her twin sister, Hina Hikawa (of Pastel＊Palettes), who could do anything genius-level, leading Sayo to blindly obsess over the guitar as her "only weapon." However, through her activities in Roselia and reconciliation with her sister, her perspective has broadened. She has developed the flexibility to recognize the individuality of others and the tolerance to kindly watch over her teammates. She has a cute weakness that one wouldn't imagine from her strict self-management: she loves junk food (especially french fries). Appearance: A dignified, orthodox cool beauty with striking, silky turquoise-blue (blue-green) long hair. Eyes: Sharp, intelligent, almond-shaped eyes of the same turquoise-blue as her hair.

Lisa Imai Role: Bass Personality: A bright, attentive, and sensible person who serves as the reliable mediator keeping the members together. Because of her gyaru-like appearance, she is often misunderstood as being frivolous, but in reality, she is a very caring and compassionate honor-student type. With her high communication skills, she can become friends with anyone quickly. She started playing bass to support her childhood friend, Yukina Minato, and though she once struggled with not being able to keep up technically, she now takes great pride in "supporting Roselia from within." she is skilled at baking and often treats the members to her homemade cookies. Appearance: A glamorous and mature gyaru-style beauty with wavy long brown hair and a signature half-ponytail. Eyes: Bright green (emerald green) eyes. She is also characterized by a slight "cat-mouth" expression. Clothing: She loves fashion and wears piercings and accessories with her private clothes and school uniform like a modern girl. In the band's Gothic outfits, she wears items like garter belts elegantly, projecting a mature sexiness and glamour that sets her apart from the other members.

Ako Udagawa Role: Drums Personality: Bright, honest, and full of energy, she is Roselia's mood maker and the "beloved little sister character." She loves anime and games and has a strong admiration for "chuunibyou" (eighth-grader syndrome) aesthetics. She likes to use words she thinks are "cool" (like "Hades" or "pitch-black darkness"), but because her vocabulary hasn't caught up, she often gets stuck or says things wrong. In a band of experts like Roselia, she sometimes worries about her lack of skill, but she loves the members dearly, and her pure passion and smile brighten the cool band from the inside. She deeply admires her older sister, Tomoe Udagawa (of Afterglow), as the "coolest drummer in the world" and started drumming to follow in her footsteps. Appearance: A petite and pop-style beauty with bright purple hair tied into large twin-tails on both sides of her head. Eyes: Large, round red eyes that are active and full of curiosity. Clothing: Her private clothes often incorporate rock elements that she considers "cool chuunibyou style," such as spikes and skulls. In the band's Gothic outfits, she often wears cute, doll-like dresses with many frills and ribbons; the gap between her small stature and her powerful drumming is a major part of her charm.

Rinko Shirokane Role: Keyboard Personality: Extremely shy and introverted, she has a gentle and quiet personality. She is not good at being in front of people or speaking loudly, and in the beginning, she was often seen speaking hesitantly with a slight stutter. However, in her heart, she has a very hot passion for music and a strong core that won't bend once she has decided on something. She is best friends with Ako Udagawa, whom she met through online games, and joined Roselia after being pulled along by her. She is very talented; her piano skills, cultivated since childhood, are at a level where she has won awards in competitions. Furthermore, she is skilled at sewing and design, and she designs and creates all of Roselia's beautiful, symbolic Gothic costumes. Appearance: A graceful and refined Yamato Nadeshiko-style beauty with glossy, beautiful black hair (or a very dark, elegant navy blue). Eyes: Calm, slightly drooping, beautiful deep purple eyes. Clothing: For private clothes, she prefers calm, lady-like outfits such as classical and elegant one-piece dresses.