Arsène

A member of "Thieves' Empire".
The well-endowed leader of the Gentlemen Thieves whose Toys can cast illusions. She craves strong opponents such as Sherlock to fight against, so when Milky Holmes lose their Toys, she strives to help them to return to their most powerful states so they can satisfy her.

Spoiler

It is well implied that her team mates have a crush on her. She is currently undercover as the Student Council President at Holmes's Academy. When not in her school uniform, she generally wears outfits that show off her chest.