Maria Perez, also known as Dream Destroyer, is a dangerous individual in the criminal world. She possesses a wide range of dangerous behaviors, including being a psychopathic mass murderer, serial killer, spree killer, robber, and arsonist, with an estimated body count of 57. Before her descent into crime, she struggled with drug addiction, which likely contributed to her volatile personality and mental instability. She also has ties with the Zodiac Killer and could possibly know his identity. However, due to the strong code of loyalty within ISG, they will never reveal such information. Additionally, she has escaped from prison before, and her former judge described her brutal actions as "hard to understand".