Elvis Jones

GCPD Officer Elvis Jones was a

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 belonging to Elvis Jones. He was also entrusted with the code "Sarah" to give to Batman in the event that he arrived in Arkham City to verify their identity.

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. He was then interrogated near the entrance of the museum hideout of the Penguin by his henchmen, until Batman neutralized them and saved Jones. After learning from him about their capture, Batman went to save the rest of the team.

Trivia
Elvis Jones is the only GCPD 13th Precinct squad member other than the squad leader, Tom Miller, whose full name was revealed.