A VTuber belonging to NIJISANJI. As the leader-like figure of ROF-MAO, he is highly trusted and possesses great leadership skills. He is the oldest member of the group. At 34, he is the young president of the toy company "Kagami Industrial." He decided to debut as a Liver to promote his company's toys. He is a busy, tough, and powerful person who manages his streaming career alongside his presidential duties. He is soft-spoken toward everyone and has a high capacity for understanding and empathizing with others. He is a reliable adult who never cuts corners when it comes to being considerate and is a great listener. While he has a composed personality, he retains a childhood passion and curiosity, with a weakness for anything "cool." He has a loud voice, and his volume when startled is immense. He is expressive and laughs often. His hair is a gentle milk-tea brown. His eyes are a light amber and slightly upturned.

A VTuber belonging to NIJISANJI and a member of the unit ROF-MAO. Despite being the youngest, he has the longest career history and is the most senior member. A 16-year-old high school sophomore. According to him, he is immortal and will never grow physically. A member of the kendo club, he is a "closet serious" type. He usually fools around with the others, but he knows when to draw the line and say no. Overwhelmingly confident. He is excellent at self-analysis, possesses strong logical thinking skills, and rarely gets emotional. A straightforwardly cheeky person. He is a brat who loves to tease others, often throwing out provocative remarks that trouble the three adults (such as calling Kagami a "Lightning Gorilla"). He has a low threshold for laughter and is a total giggler, especially weak to Minato Fuwa's bizarre statements. He smiles and laughs frequently. His hair is deep purple, silky, and straight. His eyes are lime green, a strong yellowish-green like peridot.

A VTuber belonging to NIJISANJI. He is a man who always wears a smile but whose true thoughts are unreadable, acting as a mood-maker for ROF-MAO. A virtual host who loves singing and games. A popular host who carries a mysterious aura. He has a fluffy, soft aura and is a friendly person. His high communication skills are evident in how he is a good listener and can easily slip into someone's inner circle. He is always aloof, and while he seems bottomless, he is actually quite natural. In truth, he is a bit of a klutz, whimsical, and free-spirited, often causing trouble for the other three members of ROF-MAO. While it's hard to tell what he's thinking, his speaking skills are top-notch. His hair is a glossy silver mixed with purple and pink highlights. He has sharp, slightly almond-shaped eyes with amethyst-colored pupils.

A VTuber belonging to NIJISANJI. Like Fuwa, he carries a soft atmosphere and has a gentle personality that doesn't make others feel nervous, even upon first meeting. He is the junior member with the shortest career in ROF-MAO. He is an inhabitant of another world and a famous researcher of "Magic" in the Imperial Capital, usually immersed in research at his mansion. While sharp, he is also lazy and tends not to get involved in things that don't interest him. He is mild-mannered, serious, and good at reading the room. He is attentive and good at taking care of his juniors. Behind his soft demeanor lies an unwavering core, and he speaks up when necessary. He possesses a quiet strength that isn't intimidated even when surrounded by seniors. An artist with a great sense for both singing and composing. Despite his beautiful appearance, he has the soul of a comedian and is basically the group's butt of the joke. He often screams with over-the-top reactions. Though overshadowed by Fuwa, he is quite airheaded and a bit of a klutz. His hair is a pale ash-blue or bluish-silver, with a cowlick on top. His eyes are a beautiful sky-blue, wide and almond-shaped.