See main article: Martian Manhunter.
See main article: Jack O'Lantern (DC Comics).
Jack the Ripper is a fictionalized version of a real-life serial killer. The character was created by Brian Augustyn and Mike Mignola and first appeared in Gotham by Gaslight #1 (February 1989).
Jacob Packer had been trained in both medicine and law by Thomas Wayne while Martha Wayne rejected him. Packer hired an assassin to kill the two and afterwards personally killed women to "silence" his own insanity. Jack the Ripper frames Bruce Wayne for his killings in Gotham City. A trial was held in which Packer was a defense attorney yet Bruce was convicted, sentenced to be hanged and imprisoned in Arkham Asylum before eventually figuring out the killer's identity and escapes from prison with Alfred Pennyworth's help. Batman confronts Jack the Ripper throughout Gotham and the two eventually come to Thomas's and Martha's graves before he's killed by Inspector James Gordon.[1]
Jacob Packer makes a non-speaking cameo appearance in ,[2] while Jack the Ripper's identity is instead utilized by James Gordon (voiced by Scott Patterson).
See main article: Jade (DC Comics).
See main article: Jakeem Thunder.
Aubrey James is a fictional character appearing in American comic books published by DC Comics.
Aubrey James is the mayor of Gotham City and a friend of Thomas Wayne prior to Thomas' murder. He is later murdered, as mentioned in The Madmen of Gotham.[3]
Aubrey James appears in Gotham, portrayed by Richard Kind.[4]
Java is a fictional character appearing in American comic books published by DC Comics. He was created by Bob Haney and Ramona Fradon, and first appeared in The Brave and the Bold #57 (January 1965).
Java is the Neanderthal servant of Simon Stagg, who discovered and revived him. Java is present when Rex Mason discovers the Orb of Ra in Egypt and transforms into Metamorpho. He pines for Simon's daughter Sapphire Stagg, but is rejected because she is in love with Metamorpho.[5]
Simon Stagg later kills Java, but he resurfaces at Metamorpho's funeral.[6] [7] In Outsiders (vol. 4), Simon Stagg transforms Java into a Shaggy Man before Freight Train defeats him.
In the DC Rebirth relaunch, Java operates as the supervillain Doctor Dread and forms a counterpart of the Terrifics called the Dreadfuls.[8] [9]
The Javelin is a fictional DC Comics supervillain.[11]
The Javelin is a former German Olympic athlete who turns to crime, using his athletic skills and a javelin-based weapons arsenal. He later joins the Suicide Squad in exchange for his criminal record being purged.
In Checkmate, Mirror Master recruits Javelin to frame Amanda Waller, during which he attempts to protect Jewelee and is killed after being run over by a runaway jeep.[12]
Jefferson Jackson is a supporting character of Ronnie Raymond (a.k.a. Firestorm) who makes his debut in Firestorm (vol. 2) #1 (June 1982). Jackson is a former student of Bradley High School in Manhattan, New York. During his time at Bradley High, Jackson joins the school's basketball team, where he meets and befriends Ronnie.
Jefferson "Jax" Jackson appears in media set in the Arrowverse, portrayed by Franz Drameh.[14] [15]
Virginia "Jinny" Hex is a fictional DC Comics superheroine. She is the granddaughter of Jonah Hex and a member of Young Justice. She first appeared in Batman Giant #4 (December 2018).
See main article: Jinx (DC Comics).
See main article: Johnny Thunder.
See main article: Joker (character).
M'yrnn J'onzz is the father of the twin brothers J'onn J'onzz/Martian Manhunter and Ma'alefa'ak. His first appearance was in Martian Manhunter (vol. 2) #3 (August 2001).[17]
M'yrnn J'onzz appears in Supergirl, portrayed by Carl Lumbly.[18] This version was captured by the White Martians and coerced into revealing the location of the Staff of Kolar, a psychic weapon believed to be the key to ending a war. After being rescued by Supergirl, Martian Manhunter, and Miss Martian and taken to live in National City on Earth, M'yrnn develops a form of dementia before sacrificing himself to stop Reign from terraforming Earth. In subsequent seasons, M'yrnn appears as a spirit and in flashbacks.
Rhea Jones is a fictional character appearing in American comic books published by DC Comics. She is a member of the Doom Patrol under the codename Lodestone who gained magnetic abilities in an electromagnetic explosion that killed her father. Lodestone later undergoes a metamorphosis that enhances her abilities, leaves her face blank, and moves her eyes to her chest and upper back.[19]
Tao Jones is a fictional character appearing in American comic books published by DC Comics.
She was among the children who were experimented on by Doctor Love while they were still in their mother's womb, causing her to develop the ability to generate force fields. She becomes a member of Helix and an enemy of Infinity, Inc.[20]
Tao Jones appears in the Stargirl episode "Frenemies – Chapter Eight: Infinity Inc. Part Two", portrayed by Andi Ju. This version is a patient at the Helix Institute for Youth Rehabilitation partnered with Kritter.
Jumpa is a fictional character appearing in American comic books published by DC Comics.
On Earth-Two, Jumpa is a Kanga, a flying kangaroo-like creature and friend of Wonder Woman who serves as her mode of transportation on Themyscira.[21]
In Infinite Frontier, a flashback to Wonder Woman's childhood had her working to train Jumpa while riding through Themyscira. However, she is rejected and thrown into the ocean before Hippolyta rescues her.[22]
The Judge is an alias used by different fictional characters appearing in American comic books published by DC Comics. Each iteration is usually depicted as a cloaked figure sporting a courtroom robe and a blindfold or sunglasses as well as wielding a mallet-sized gavel while opposing superheroes, such as Batman and the Flash.
The first version was created by Archie Goodwin and Howard Chaykin, and first appeared in Detective Comics #441 (July 1974). He was a judge in Gotham City who has a scar on his right hand, and father of Melissa Clay. After his daughter was accidentally blinded due to his corrupt dealings, the Judge blamed Batman for his problems so he kidnapped the original Robin as bait for various trap-based weapons in an abandoned summer resort. The Judge was defeated by the Dynamic Duo and turned himself in after accidentally killing his daughter.[23]
The second version, Jacob de Witt, was created by Sam Humphries and Bernard Chang, and first appeared in Nightwing (vol. 4) #35 (February 2018). He was originally a judge from the 17th century who was tied up and drowned, becoming a blind immortal with the ability to see corruption in people's hearts. In the present, the Judge is a serial killer with a beard and white suit who uses a casino chip calling card in Blüdhaven while having several confrontations with Dick Grayson before being defeated by Nightwing and imprisoned.[24]
See main article: Hunter Zolomon. Hunter Zolomon is also known as the Judge in 25th-century Central City.[25] [26] [27]
An original incarnation of the Judge appears in The New Batman Adventures episode "Judgment Day", voiced by Malachi Throne.[28] This version is an alternate personality of Harvey Dent / Two-Face who is a violent court-themed vigilante.