GCPD Officer Southwold was an undercover Officer within Arkham City.
Batman: Arkham CityEdit
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 Southwold.
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 taken alongside Denning to the Iceberg Lounge to be tortured by the Penguin himself. He was also forced to witness Denning be tortured by having his hands frozen and then Penguin prepare to shatter them with a hammer while recording it on PA for Batman to hear. He along with Denning are eventually rescued by Batman after he managed to retrieve a security protocol to deactivate the Ice Gun.
Curiously, Officer Southwold was absent from the Trophy Room after being rescued, while the rest of his squad was present.