M.M.

エム・エム

M.M. is one of the only two female members of the Kokuyo Gang. As a criminal, she was held in Vendicare Prison until Mukuro orchestrated a jailbreak, after which she joined him. She plays the clarinet, employing it as both a mid-range and a close-combat weapon.
In battle, she wields her Nunchaku Clarinet as a weapon. Using her clarinet, she can generate microwaves to fry, detonate, and destroy her opponent's body. She is self-centered, caring only about herself, money, and possibly Mukuro. Like Lancia, she is also skilled in hand-to-hand combat.
Her Kokuyo uniform differs significantly from Chrome's.
In the volume 28 extra, Kokuyo no Ajito, Ken stated that she only likes Mukuro because of his money, a claim M.M. admitted.