Fox began to develop a TV series centered on James Gordon's early days as a police detective and the origin stories of various Batman villains in September 2013.
Gordon later falls in love with her; he was previously in a relationship with Barbara Kean, but due to his police duty and her life being put in danger by crime families, he advised her to temporarily leave him until they meet again.
During that time, Gordon soon goes into the conflict with a new director of Arkham, a scientist Hugo Strange, who makes inhuman experimentations in Indian Hill, including the resurrections of Theo Galavan and Fish Mooney.
Sarah Essen (portrayed by Zabryna Guevara; seasons 1–2) is the Captain of the Gotham City Police Department's homicide squad and the boss of James Gordon and Harvey Bullock.
Selina Kyle (portrayed by Camren Bicondova; seasons 1–5; Lili Simmons in "The Beginning...") is a young street orphan and skilled thief who was a childhood friend of Bridget Pike.
Edward "Ed" Nygma (portrayed by Cory Michael Smith; seasons 1–5) is a forensics operative who works for the Gotham City Police Department and often presents his information in riddles.
At the conclusion of the chaos caused by the Alice Tetch Virus, Oswald outsmarts Riddler and has Victor Fries use his freeze gun on him, in order to use his frozen body as the centerpiece of his Iceberg Lounge and as a reminder to never let love be his downfall again.
It was revealed that Nyssa Al Ghul had Hugo Strange place a control chip in Riddler's brain, causing him to do orders such as blow up Haven, until it was fried by Gordon using a respirator.
Riddler then helps Bruce, Alfred, Barbara, and Lucius reclaim the Gotham City Police Department in a hazmat suit, doing a bomb ruse where the code is provided by the answer to how many times a Pallid beach mouse can give birth in a year.
Ten years later, in the series finale, he is sprung from Arkham Asylum by Jerimiah Valeska, assuming it to be Cobblepot, and proceeds to capture Mayor Aubrey James in order to detonate the newly rebuilt Wayne Tower.
After obtaining a fleeing Hugo Strange, Fish Mooney has him take her, Oswald Cobblepot, Victor Fries, and Bridgit Pike to the slaughterhouse where the antidotes to Alice Tetch's blood is.
[19][20] Proving herself an observant and energetic partner at the GCPD, she often persists in trying to keep actively involved as a means to further Jim's work, making him uncomfortable with potentially endangering her as with Barbara following Cobblepot's return.
[21][22] He is the main antagonist of the first half of season 2 Rise of the Villains, who's responsible for creating chaos and violence in Gotham City, as part of his master plan to finally carry out a centuries-old vendetta.
Using Zaardon the Soul Reaper, Theo has Tabitha spring Jerome Valeska, Barbara Kean, Aaron Helzinger, Richard Sionis, Robert Greenwood, and Arnold Dobkins from Arkham Asylum to assist him.
During the final battle at Galavan's tower, Tabitha tells Theo he has lost and she is going to look out for herself, saving Silver and Bruce Wayne, as Gordon and Penguin come to the rescue, albeit for very different reasons.
When Gordon has been framed for the death of police cop Carl Pinkney and sentenced to Blackgate Penitentiary, the news reporter stated that Harvey Dent could not be reached for a comment.
After her mother committed suicide sometime after her father's death, Ivy is adopted by a foster family and renamed Pamela, but runs away from their home and lives on the streets while maintaining contact with Selina Kyle.
After Oswald Cobblepot was shot by Edward Nygma, Ivy Pepper nurses him back to good health and helps to dispose of Gabe and those who came with them by having them buried in her garden of moving plants.
Then she brings the Mutant Leader to have a revenge match against Selina Kyle while she mesmerizes Bruce to take her to the factory that is helping to decontaminate the river so that Lucius can deactivate the machines ther.
[44] In the season finale "All Happy Families Are Alike", Mooney takes Falcone, Cobblepot, James Gordon, and Harvey Bullock prisoner where she intends to kill them all in exchange for Sal Maroni returning all her old territories back to her.
A gang of criminals led by Grady Harris and Merton bribe Reed to give them Crane and forces him to re-create his father's fear toxin so they can use it to control Gotham City.
Father Creel (portrayed by Ron Rifkin) is a priest who is a high-ranking member of the religious sect of the Dumas family that left Gotham City with connections with Theo Galavan.
"Subject 514A" (portrayed by David Mazouz) is an unnamed look-a-like clone of Bruce with longer hair and a mark over his right eyebrow that is one of the experiments that escaped from the Indian Hill bus.
The Sensei / Shaman (portrayed by Raymond J. Barry)[78] is a mysterious figure, associate of the Court of Owls, and servant of Ra's al Ghul who enters Bruce Wayne's life with the stated intention of unlocking the potential of his own mind.
After killing some corrupt police officers, Professor Pyg moved on to Phase 2 of his plan that involved harvesting the organs of dead less fortunate people that he poisoned and cooking them into the meat pies he made for a charity event at the Falcone Home and School for Orphans.
After Gotham is cut-off from the rest of the world, Jeremiah forms his own fanatic cult with the help of his assistant Ecco, and occupies a large portion of the city designated as the "Dark Zone".
Jeremiah works with the Mad Hatter to produce a toxic gas at the abandoned Ace Chemicals plant, which he plans to release into Gotham's skies so that the government will no longer be able to send supplies into the city.
Ten years later, a seemingly brain-dead Jeremiah is incarcerated in Arkham Asylum until it is revealed that he feigned being in a vegetative state to wait for Bruce's eventual return to Gotham.
Theresa Walker sent Delta Force into Gotham City to reclaim it from the criminals and also manipulated Hugo Strange into putting a control chip in Riddler and Leslie Thompkins' brains.
Eduardo Dorrance / Bane (portrayed by Shane West[84][85]) is a former army buddy of James Gordon who returns with a group of elite soldiers called Delta Force to help restore Gotham City from its "No Man's Land" state.