Clara Saberton - Batman: Arkham Knight

The personal secretary of Bruce Wayne, Clara Saberton, remained behind in Gotham during Scarecrow's Halloween siege. In the relative safety of Wayne Tower's top floor, she continued working for Wayne and Lucius Fox. 

She was deceived by Thomas Elliot, aka Hush (nee the Identity Thief), who was impersonating Bruce Wayne. Mistaking him for her real employer, she was surprised to see him, believing he had evacuated the city hours earlier.

Minutes later, after hearing a disturbance coming from Wayne’s office, Clara went to investigate—only to be shot at by “her boss,” who had taken Fox hostage.

Convinced that Bruce Wayne had gone insane, she was relieved by Batman's appearance, begging the vigilante to save Fox. 

With the building still under lockdown, Clara fled to the lower floors, reasoning they were still far safer than Gotham's besieged streets. 

Officer J.T. Wicker - Batman: Arkham Knight

A corrupt officer in the GCPD, JT Wicker, has been working as a mole and informant for the Riddler for years, helping Nigma stay one step ahead of the police and feeding him inside information that he could use against them. Their partnership started ten years ago, when Nigma, then going by the name Eddie Nashton, infiltrated the GCPD as the head of the Cyber Crimes Unit. 

In the runup to Halloween, and Riddler's latest scheme against Batman, he planted several of Nigma's trophies throught GCPD headquarters.

When Batman discovered Wicker’s ties to the Riddler, he confronted the officer, demanding he reveal everything he knew about Nigma’s plans. Unable to convince his fellow officers that Batman was lying, Wicker confessed, shocking and disgusting his colleagues. 

He spent the rest of the evening locked in a holding cell. Wicker attempted to garner sympathy from his colleagues, claiming he was a triple agent and acting on Gordon's behalf, though no one believed him. 

Realising he had no allies, he dropped his act, lashing out at Batman. He called out Batman's hypocracy and brutal methods, blaming him for Riddler's mental breakdown and obsession with humiliating, unmasking and killing the vigilante. 

"The Starfish Freak" - Batman: Arkham Knight

Known as "The Starfish Freak," he was once a construction worker at Seagate Amusement Park who became possessed by one of Starro the Conqueror’s Star-Spawn. After turning violent and attacking his fellow workers, he was eventually subdued, and both he and Starro were imprisoned.

At Jack White’s suggestion, Edward Burke planned to feature them as the main attractions of the park’s freak show, emphasising the man’s loss of bodily autonomy and marketing him as “more beast than man.”

After Jack White and Dr. Harleen Quinzel persuaded Burke to take his own life, shortly after he signed over the deed to Seagate, some believe that the Starfish Freak was stored away alongside Starro. 

However, most assume he was killed when the Joker halted all construction plans and turned the park into his latest hideout.