The Gentlemen Thief Empire

Josephine Mystère (ジョセフィーヌ・ミステール Josafīnu Misutēru?) / Cagliostro (カリオストロ Kariosutoro?)
Voiced by: Asami Sanada
Henriette's older sister who appears in the 2nd PSP game. During the game, she acts as student council president and assigns Ellery to be in charge of Milky Holmes.

Genius 4

Rei Kamitsu (神津 玲 Kamitsu Rei?)
Voiced by: Susumu Chiba
The head of G4. His name is based on Kyōsuke Kamitsu.

Milky FeathersEdit

A pair of detectives who are the protagonists of the third anime season, Futari wa Milky Holmes.

Alice (アリス Arisu?)

Voiced by: Ayasa Itō
One half of Milky Feathers, who is an understudy of Milky Holmes.
Kazumi (カズミ?)
Voiced by: Aimi Terakawa
Alice's partner in Milky Holmes.

Other CharactersEdit

Mori Arty (森・アーティ Mori Āti?)

Voiced by: Motoki Takagi
A mysterious transfer student with a feminine appearance but masculine voice.
Irene Doala (アイリーン・ドアラー Airīn Doarā?)
Voiced by: Sayuri Yahagi
A young but wily girl who likes Kokoro and often kidnaps her for her own desires and plans to help her businessman father.
Buta (ブー太 Būta?)
Voiced by: Shintaro OohataRikiya Koyama (Handsome ver.)
A fat, pig-like boy who is obsessed with eating lard and is often wrongly accused by Milky Holmes of being a culprit. When he ends up gaining powers from the Toys that Sherlock Holmes had sealed away, he steals all the lard from the city, using it to change into a more powerful and handsome form.
Lily Adler (リリー・アドラー Rirī Adorā?)
Voiced by: Kana Asumi
A girl who appears in the Alternate episodes. Her Toys allow her to manipulate ice.