Raissa Mello is a complex character who sought refuge within the ISG group due to challenging circumstances with her family. Pedro Rodrigues, another member of the group, extended help to Raissa as she left her home. To her satisfaction, Pedro took matters into his own hands and assassinated her abusive father, who was also a crooked cop. This act of vengeance gave Raissa a sense of closure and justice, solidifying her connection and loyalty to the ISG.