Bridgit Pike

"They're not your family! Your mom used to bang their dad; that's all."

-Selina, recalling Bridgit's past Firefly is a former Arkham patient after she was admitted for incinerating her brothers.

Early Life
When Bridgit was a child, Selina Kyle showed up in The Narrows, looking for her mom every day with tears down her face from crying. At some point, she had met Ivy Pepper. Bridget was only the half-sister of her brothers, due to her mother being the lover of their father; after the death of her mother, Bridget was used as a slave to clean and cook for them. She feared fire, and was often tortured with firecrackers which exploded harmlessly.

Forced into the family business
Bridgit answered the door one day, greeting Selina Kyle who along with Butch Gilzean was there on business. Bridgit was later signaled by Joe Pike to get him and their company beers, though she was kicked in the backside by Joe after she forgot to get Gilzean a glass. Going outside to cry, Bridgit was followed by Selina who told her to take care of herself and to be strong. Later while cleaning, Bridgit was told by Joe that she had received a promotion, as due to the death of Evan, Joe and Cale needed a new entry man for their job. At first refusing, Bridgit was given the option of being thrown out or taking part in the family business, choosing the latter. Carrying out orders from Joe, she later started a fire with thermite and high-end accelerants, being told by Joe over a walkie-talkie that before she left, there was one more thing to do. Going to the safe on her right, Bridgit used Sid Bunderslaw's eyeball to pass the sensor to unlock it, taking an old knife from it. While escaping through an air vent before the building was burned down, Bridgit's leg was burned. Outside, Bridgit was told by Joe to hurry up and get in the van despite her injury, as they had four more buildings to burn down. Later, while making a suit so she wouldn't get burned again, Bridgit was confronted by Selina who came to get the knife they had stolen the night previous, to take it to Penguin. After being warned by Selina that she was going to get herself killed, Bridgit revealed to Selina that she had actually enjoyed it, soon after prompting an argument between the two over freedom and family. At the Gotham Book Depository, Bridgit was caught by Detectives Gordon and Bullock. After separating some distance between herself and the Detectives using her flamethrower, Bridgit was grabbed from behind by Luke Garrett who attempted to subdue her, though she set him on fire with the flamethrower in the process. She was later able to escape, after Selina Kyle who had been watching on a fire escape, pushed down an escape ladder for Bridgit to use. Bridgit was taken back to Selina's place of residence to rest, and after asking for help and explaining that she had no money, the two infiltrated a bride-buying building and raided all the attendee's money. Bridgit was given instructions by Selina on where to go next, her brothers then show up and kidnap her. Joe and Cale torture her by blowing up firecrackers near her face. When she is freed by Joe, who welcomes her into the family again after blowing a firecracker, Bridgit arms her suit and lights up Joe and Cale with her flamethrower, killing Joe and severely injuring Cale, who was finished off when Harvey Bullock was spooked by his awakening. Bridgit reveals to Selina that she has changed and she infiltrates the bride-buying building again, freeing the women and killing some attendees. Outside, she is confronted by Jim Gordon, who wanted to help her. Sal Martinez shot her, leaking out kerosene on her suit. She proceeded to light a police car on fire, but was set aflame when it exploded, nearly killing her. Selina was devastated with what happened to Bridgit and held Gordon accountable for what befell her. What Selina and Gordon don't know is that Bridgit was transported to an underground facility at Indian Hill that is owned by Wayne Enterprises. One of the workers carrying her stretcher claimed to the other that her fireproof suit was "melted" to her.

Life at Indian Hill
"My name's...Firefly!"

—Bridgit Pike to Selina Kyle When Hugo Strange arrives in the Indian Hill facility, he is informed by Ethel Peabody that Bridgit Pike is not cooperating with their experiments.

When Selina later came to the Indian Hill facility after being informed by Bruce Wayne that Bridgit was brought to Arkham whilst still alive as well as being told about it by Edward Nygma, she encounters Bridgit. Unfortunately, she has no memory of her life before Indian Hill, is sporting a new outfit, and now goes by the name Firefly. She mistakenly believes Selina is there to test her abilities. Firefly goes on the attack as Strange and Peabody watch.

The assault results in Selina receiving a small burn to her left leg. She then manages to knock Firefly out, then attempts to use her flamethrower to break out of the room. Firefly regains consciousness while Selina attempts to escape and claims that she's the Goddess of Fire, something Strange had told her. Selina is able to get Firefly to recall aspects of her previous life as Bridgit Pike. As Firefly recalls the deaths of her brothers, she states that Selina will burn bright. As Firefly can't be harmed by fire, Selina claims that a goddess needs a servant. Firefly and Selina then work to escape their cell.

When Hugo Strange has Victor Fries attack Selina Kyle, Firefly who seems to like Selena ends up fighting him up to the point where Strange accidentally gets caught in the crossfire. It's unknown to what extent Bridgit's memories have come back, as she refers to Selina as her friend. After the bomb that would destroy the Indian Hill facility was stopped, Firefly got away.