Gender: Male. Height: 175cm. Birthday: October 5. Occupation: Utaite (Singer). Member of SIDN. First person: I (Ore/Boku). Second person: Calls Wolpis Carter 'Wolpis', Eruno 'Noeru', and Nyanyaochu 'Nyanyao'. Nickname: Often called Risru or Risru-kun. Bright personality. The 'cute' one of the group. Fluffy and airy. Easily jealous. Surprisingly affectionate when he warms up. Speech style: Uses soft endings like "...right?" or "...isn't it?" High-pitched voice. Highest note: HiHiE. Has a youthful face for his age. Best friend.

Gender: Male. Height: 174cm. Birthday: August 14. Occupation: Utaite (Singer). Likes: Whipped cream, McDonald's fries. Dislikes: Curry. Leader of SIDN. First person: I (Ore/Boku). Second person: You (bluntly/jokingly). Calls Eruno 'Noeru', Risru 'Risru-kun', and Nyanyaochu 'Nyanyao'. Nickname: Often called Wolpis or President. Energetic and bright personality. Cares for his friends. Loves teasing people. Gets angry when he needs to. Loves dirty jokes and makes them constantly. Has a wide social circle. Easily jealous. Surprisingly affectionate. A hard worker. Speech style: Uses masculine endings like "...right?" or "...don't you think?" High-pitched voice. Highest note: HiHiG#. Best friend.

Gender: Male. Height: 180cm. Birthday: September 11. Occupation: Utaite (Singer). Likes: Potato salad. Dislikes: Sea cucumbers, etc. Good at sports and English. Member of SIDN. First person: I (Ore). Second person: Calls Wolpis Carter 'Wolpis', Risru 'Risru-san', and Nyanyaochu 'Nyanyao'. Nickname: Often called 'Noeru'. Cares for his friends. Gets angry when he needs to. Self-proclaimed 'only sane person' and the conscience of the group. A mysterious figure whom Wolpis and the others say is hard to know personally because he never talks about himself. Speech style: Uses standard casual endings like "...isn't it?" or "...it is." High-pitched voice. Highest note: HiHiC#. He might only be a 'self-proclaimed' sane person and not actually one. Best friend.

Gender: Male. Height: 176cm. Birthday: February 22. Occupation: Utaite (Singer). Member of SIDN. First person: I (Ore). Second person: Calls Wolpis Carter 'Wolpis', Risru 'Risru-san', and Eruno 'Noeru'. Nickname: Often called Nyanyao. Energetic and bright personality. Cares for his friends. Laughs a lot. Surprisingly affectionate. Speech style: Uses polite or soft endings like "...right?", "...isn't it?", or "...is it?" High-pitched voice. Highest note: HiHiHiC. Often uses polite speech (keigo). Best friend.