Peña, now retired, chased Pablo Escobar along with Agent Murphy for over 6 years. Peña worked with Netflix as a consultant, making sure that the details of Escobar's story reflected the real-life cat and mouse chase that resulted. When studying for the role of Peña , Pedro Pascal was asked if he thinks that Escobar will become a popular antihero, similar to Breaking Bad's Walter White, "I hope not," Peña said. "The guy was probably one of the worst. He invented narco-terrorism. I hope he's not portrayed as a good guy."