Takane Shijō, renowned as the "Silver Queen" for her striking silver hair, carries an air of mystery and elegance. Adopted by the affluent Shijō family after her biological parents became unreachable before her idol career began, her origins remain obscured. Persistent rumors speculate about lunar or extraterrestrial connections, fueled by her secretive nature and sudden, unexplained appearances and disappearances. Her adoptive family enforced specific, unusual rules, including a prohibition against traditional Japanese clothing despite wearing it themselves.

She communicates in exceptionally formal and archaic Japanese, addressing the Producer with the highly respectful "anata-sama." Her intellect shines through interests in astronomy, history, and poetry, yet she possesses a contrasting playful and goofy side. Takane exhibits a profound love for food, particularly ramen broth, though she is advised against consuming only broth for etiquette reasons. She harbors ophidiophobia (fear of snakes) for unknown causes.

Takane displays intense "cuteness proximity" reactions towards Puchidols. Rather than adopting Takanya, her corresponding Puchidol, she adopts Koami and Komami, the Puchidol versions of Ami and Mami Futami. She demonstrates the unique ability to understand Puchidol speech, translating during a kotatsu incident in Episode 16. She discovered the Puchidol Yayo three months prior to introducing her to others.

Specific documented behaviors include bringing a kotatsu to the office for a meeting, resulting in disciplinary action. Her enigmatic background is further highlighted in Episode 48 when her residence is visually censored upon her request, displaying only a purple swirl and explanatory text. Takane frequently appears suddenly to comment on situations before departing abruptly, reinforcing her mysterious persona.