Smoke - The Batman: Season Five

A loyal follower of Mirror Master, aka Samuel Scudder, Smoke was the only one among Scudder's criminal entourage who was not a hard-light Mirror Duplicate. 

She played a crucial role in assisting her employer in the creation of his Specular Trap, overseeing his elaborate plan to capture, imprison, and ransom Gotham’s wealthiest citizens within the Mirror Dimension. She was also responsible for setting up multiple relay points throughout Gotham, which were required for the effects of the machine to entrap every citizen in the city, save for Batman and The Flash. 

Smoke confronted the two heroes at their hideout, believing she had successfully entrapped the pair in the Mirror Dimension. However, she realised too late that Batman had swiped Scudder's Portal Ray during Mirror Master's monologing, allowing them to return safely to their original world. Trying to fight back, she shot at the Scarlet Speedster with her Shard Gun but was disarmed by the Dark Knight before she could even hit him.

The two villains were easily incapacitated and taken to jail, with The Flash reassuring Batman that they would both face judgment for their actions. 

Carly - The Batman: Season One

A young girl living with her mother in Gotham City, Carly is the niece of Doctor Kirk Langstrom, an audiometrist employed at Wayne Industries.

Attempting to conceal his ongoing project - the creation of a formula that would alter the user's physical appearance and transform them into a giant man-bat hybrid - and maintain Wayne’s funding for his experiments, Langstrom lied about Carly’s health, telling the CEO that she had lost her hearing from measles when she was three years old and that his research was designed to help restore her aural faculties. 

Successfully appealing to Wayne's compassionate nature, Kirk's lie bought him a few extra days, though he knew he had to up the timeline to prevent further hitches, which it inevitably did. 

Wanting to support an employee who he thought was in need, Wayne bought Carly a high-tech hearing aid, only to be rebuffed when she was unnerved by his efforts to communicate through lip reading and sign language.

Realising he had been deceived, Wayne returned to confront Langstrom about his lies and the true nature of his research, only to witness what Kirk declared to be the “birth of Man-Bat.”

Marlene -The Batman: Season One

An employee of Wayne Industries, Marlene worked as a receptionist at the company's corporate headquarters in downtown Gotham City.

Firefly - The Batman: Season Five

A well-known criminal in Gotham City, Garfield Lynns, adopted the name Firefly to carry out thievery and corporate espionage activities. Over his criminal career, he has collaborated with many supervillains and frequently faced off against the G.C.P.D and the Bat Family. 

Lynns grew increasingly frustrated with the people of Gotham, who consistently got his name wrong and vowed to one day leave the city behind forever. 

Teaming up with his girlfriend and partner, Dr Jane Blaisedale, aka Blaise, the pair planned to execute their final heist; to rob the Gotham Treasury and use their spoils to begin a new life elsewhere. 

To do this, the duo broke into Blaisedale's old laboratory at Gotham U, stealing the sample of a radioactive phosphorus isotope that she had been working on before her project was shut down by the board of directors. 

Successfully escaping with their prize, their victory was short-lived. While working on bonding the isotope to his jetpack's fuel tank, Firefly inadvertently super-heated the chemical beyond its flashpoint, triggering a massive explosion that destroyed their hideout and dowsing Lynns with harmful levels of experimental radiation. Absorbed into his skin, the radiation began to mutate his biology, permanently altering his physical form and granting him extraordinary meta-human abilities, which he could barely control. 

Seeing these powers as a chance for a fresh start, Lynns decided to drop the alias for something more fitting, settling on Phosphorus.

Hamilton Hill - Young Justice

The Mayor of Gotham City, as of 2010, Hamilton Hill (bn. 1958) went on a hunting trip to Northern India - during the September of that year - in the hopes of shooting Indian tigers.

Despite the offer of support from local guides, he rejected it, considering them to be both superstitious and unnecessary. Using his own tracking skills and dogged determination, he managed to hunt down one of the elusive animals while they were drinking from a nearby river. However, just as he was about to take the shot, the tiger was suddenly captured by the Brain, a notorious supervillain who was rounding up regional animals for his own ghastly experiments with the experimental drug, Kobra Venom. 

In the ensuing chaos, Monsieur Mallah, one of Brain's loyal henchmen, attacked Hill and his drivers with a minigun, shooting at the would-be poachers and forcing them to flee in fear for their lives. 

Surviving the violent encounter with merely a broken arm, he returned to Gotham, only to be the subject of vicious mockery from the press. One article from the Gotham Truth Rag even gibed at the suggestion that he was ambushed by a "guerilla gorilla."