Patty Crew was originally part of BLACK PHANTOM. In a mission with Kaoru, Momiji, Kazura, Kagari, Mio and Momotarou, Patty was the target to be saved from the organization. She was being used to destroy P.A.N.D.R.A. Although Kaoru destroyed the grip on her by BLACK PHANTOM, she tried to kill herself because of mind-control self-destruct programming after a loss. Hyoubu speculates that the triple boost was not a complete success because of this fact. In the end of the anime and also in recent manga chapters, Patty has been shown to have joined P.A.N.D.R.A. Comically, Patty has a large interest in yaoi pairings, due to Hyōbu just copying how Bullet and Tim Toy were treated during their recovery with somewhat little regard, and her normal taciturn personality will change upon seeing any of the male members of P.A.N.D.R.A. (or even male members of B.A.B.E.L.) in questionable situations. This extends to the omake pages where Patty apparently draws doujinshi with male pairings for a hobby, and visits comic conventions and otaku-related places such as Akihabara. When Hyōbu goes unconscious and Yo is suggested to give him mouth-to-mouth recisitation, at which he begs her to help him get out of the situation, but she just says that she wants to draw the situation. In recent chapters, Patty transferred into The Children's class with other P.A.N.D.R.A. members as new students.

(Source: Wikipedia)