21 years old, afro-latina (black and mexican), 5"9, 8 years at G.D. St. Prison, Charges: Armed robbery (with a criminal record), Ermes Costello is a headstrong, pragmatic, and down-to-earth person, who has been consumed by a thirst for revenge for much of her youth. At the start of the story, Ermes is mostly concerned with her own survival. Her only goal is to last long enough in prison to eventually murder her sister Gloria's killer, Sports Maxx.