Personality: Possesses an insatiable thirst for knowledge and is generally bright and kind, but also has an eccentric and somewhat unhinged, '4D' side. She loves playfully teasing those she has grown close to. Likes: Collecting stories, strange or grotesque topics (insects, weird experiences, etc.), cutting food with scissors, Nerissa ♡ Dislikes: Boring things, control of knowledge, being restrained by the manager (Henmama). Skills: Endless storytelling (stream-of-consciousness conversation), archiving/recording. Features: She was imprisoned for obtaining forbidden knowledge but escaped to find more stories. Her hair is a black-and-white two-tone style, with parts turned white from the sheer weight of her knowledge. Her trademark is a 'stream-of-consciousness' way of speaking that suddenly veers into eerie or random anecdotes.

Personality: Boasts overwhelming vocal volume and top-tier singing skills, but is usually very friendly, easygoing, and has a playful, golden retriever-like personality. Contrary to her cool appearance, she is down-to-earth and full of aegyo once you get to know her. Likes: Singing, music, family, fan culture, praising her favorite characters or members. Dislikes: Pretending to be tone-deaf, behavior that ruins the mood, frustrating situations. Skills: Exceptional singing ability (vocals), perfect utilization of subculture/meme knowledge, otaku talk. Features: She was imprisoned because her ability to enchant people with her song was deemed dangerous, but she escaped. Characterized by black wings and horns, her singing skills are incredible, befitting her title 'Demon of Sound.' Unlike her appearance, she is a huge otaku and has a habit of pouring out words excitedly when talking about things she loves.