GCPD Officer Sanchez

GCPD Officer Sanchez was an undercover Officer within Arkham City.

Batman: Arkham City
When Arkham City was developed, Commissioner James Gordon, due to his attempts to question Sharp about Arkham City either being ignored directly or placed in red tape, sent ten members of the 13th precinct to go undercover into Arkham City, one of them being Sanchez.

Unfortunately, as soon as he and his fellow squad arrived in Arkham City, they were exposed via an information leak and captured by the Penguin's men. Alongside his fellow officers Tom Miller and Michaels, he was held hostage by a five-man group of the Penguin's goons inside the torture chamber. After Batman neutralized the goons, he was ordered by Tom Miller to guard the main entrance. However, he was also lectured by Miller to go by the book after he made the mistake of claiming that he would kill any of Penguins' minions that he laid eyes on.