M-9, short for M-IYU 9, is a combat cyborg created by Schwartz. John Smith uses her to fight Lena Sayers while he captures Sifr, as she is the only one strong enough to take her on. M-9 is extremely powerful and fast, capable of a high order matter attack that's as powerful as a Meister Otome's Element attack. She has the ability to upgrade after fights to become stronger, and using the opponent's abilities.