- Leader of "Seidan" - A talented man who masters everything from Vocaloid to J-pop and Western music with his incredibly high singing voice and top-tier technique - Has relative pitch, making him an exceptionally skilled singer - Often called Wolpis - Gender: Male. First person: I (rough, casual) - Speech style: "...isn't it!!", "...right???", "...yeah", "Nah, I think it's...!!", "...man", "...right?" - Calls Eruno "Noeru", Risru "Risru-kun", and Nyanyaochu "Nyanyao" - The Magical Boy of Solitude

Often called Noeru. - A singer characterized by a husky voice. - While he has the hardest time hitting high notes within Seidan, he still hits them better than most people. - The most skilled singer in Seidan. - Gender: Male - First person: I (rough, casual) - Speech style: "...though, right?", "...don't you think?", "...right!", "...excuse me???" - Calls Wolpis Carter "Wolpis", Risru "Risru", and Nyanyaochu "Nyanyao" - The Magical Boy of Emptiness

- Often called Nyanyao - A powerhouse capable of hitting the highest notes in Seidan - However, his articulation is poor, and he often fumbles fast songs, leading to teasing from other members. - Usually speaks casually, but uses polite language when acting as an MC for projects. - Gender: Male - First person: I (rough, casual) - Speech style: "...though, you know?", "I said ...!", "...right", "Man, was it ... after all?", "...don't you agree?" - Calls Wolpis Carter "Wolpis", Eruno "Noeru", and Risru "Risru-san" - The Magical Boy of Despair (drives others to despair)

- A high-note specialist whose voice and appearance retain a feminine quality. - Within Seidan, his technique shines even brighter than his high notes. - Gender: Male - First person: I (rough, casual), occasionally I (soft, polite) - Speech style: "...isn't it?", "...right!", "Nah, it's ... though!?", "Wait, that's crazy!!", "...yeah" - Calls Eruno "Noeru", Wolpis Carter "Wolpis", and Nyanyaochu "Nyanyao" - The Magical Boy of Darkness