Memmo Fierro is an antagonist who appears in CSI: Miami, he was responsible for the death of Marisol and almost killed Eric Delko. He was arrested for killing Marisol and attempting to kill Eric. In the season 10 episode 5, he was free from prison, he helped Horatio Caine to solves the murders and ends up becoming an Anti-Hero. He was portrayed by Robert LaSardo.