An antique doll belonging to Shu Itsuki. In order to cope with large crowds, Shu does ventriloquism using Mademoiselle, speaking for her in a feminine voice. However, when his ventriloquism is asked about, he states that he is not a ventriloquist.
Mademoiselle is a small, petite doll with long, blonde hair and emerald eyes. She has multiple outfits that Shu made for her, but frequently wears one made to match the Yumenosaki Academy school uniform. During the warmer months in Enstars!!, she wears a blue dress and hat to match Shu's casual spring-summer outfit.
- Being an antique doll, Shu dislikes having her being touched, as he is afraid she will break.
- Mademoiselle usually addresses others using their first name, adding either -kun or -chan to the end of it.
- Akira has mentioned that Mademoiselle does not speak in reminiscence events (such as Marionette) because Mademoiselle was created due to Shu's personality splitting as a result of shock.
- As such, in Victoria - Nameless Doll 4, Natsume explains that Shu is splitting his personality and "entrusting it to her", as he experiences what is known as Dissociative Identity Disorder (DID). (However, because Shu and Mademoiselle are shown to completely lack dissociative amnesia, it would be more apt to say that they have or more closely match the criteria of Other Specified Dissociative Disorder 1b (OSDD-1b), which details two or more separate personalities but a lack of dissociative amnesia.)
|Character||Name||What they call Mademoiselle||What Mademoiselle calls them|
|· Mademoiselle (マドモアゼル)||· Anzu-chan (あんずちゃん)|
|Hajime Shino||· Mademoiselle-chan (マドモアゼルちゃん)||· Hajime-chan (創ちゃん)|
|Mitsuru Tenma||· Mado-chan (マドちゃん)||· Mitsuru-chan (光ちゃん)|
|Yuta Aoi||· Mademoiselle-san (マドモアゼルさん)||· Yuta-chan (ゆうたちゃん)|
|Arashi Narukami||· Mademoiselle-chan (マドモアゼルちゃん)|
|Mika Kagehira||· Mado-nee (マド姉ェ)
· Big Sis Maddie (Anime Dub)
|· Mika-chan (みかちゃん)|
|Natsume Sakasaki||· Natsume-chan (夏目ちゃん)|
|Eichi Tenshouin||· Mademoiselle (マドモアゼル)|
|Izumi Sena||· Mademoiselle (マドモアゼル)|
|Kanata Shinkai||· Kanata-kun (奏汰くん)|
|Kaoru Hakaze||· Mademoiselle-chan (マドモアゼルちゃん)||· Kaoru-kun (薫くん)|
|Kuro Kiryu||· Kuro-kun (紅郎くん)|
|Nazuna Nito||· Nazuna-chan (なずなちゃん)|
|Rei Sakuma||· Mademoiselle (マドモアゼル)|
|Shu Itsuki||· Mademoiselle (マドモアゼル)||· Shu-kun (宗くん)|
|Tsumugi Aoba||· Mademoiselle (マドモアゼル)||· Tsumugi-chan (つむぎちゃん)|
|Mademoiselle||· Atashi (あたし)|
- Performance - Romeo and Juliet - Act 4
- Shu Itsuki Sub Story 1
- Original Tweet and Translation on Cover
- Cosmic Production Course - Valkyrie Part 2.1
- Nocturne - Gravekeeper's Late Night 5
- What Day is it Today?
- Secret Labyrinth - Chapter 6
- Sports Festival 3 - Chapter 5
- Victoria - Nameless Doll 5
- Eccentric - Year-end Party with Old Friends 4
- From the Flower Capital
- WANTED!!! - Chapter 1
- Nocturne - Gravekeeper's Late Night 6