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|As a result of the New 52 in 2011, the entire line of DC characters was relaunched, incorporating properties belonging to the company's imprints: Wildstorm, Milestone, and Vertigo. As such, elements of this character's history have been altered in some way from the previous incarnation. For a complete list of all versions of this character, see our disambiguation page.|
Early in his criminal career, Trickster was recruited by the Rogues and eagerly worked alongside the band of thieves. During an attempted robbery they were apprehended by the Flash, but quickly escaped. Captain Cold, leader of the Rogues, blamed the robbery's failure on Trickster, who in turn, tried to blame Cold's sister instead. Feeling this was one mistake too many, Trickster was fired from the Rogues.
When Mob Rule was eventually defeated by the Flash, Walker worked freelance for a while, again left without a team to pal around with. Despite losing his association with the Rogues, Trickster rescued Captain Cold, the man who had fired him in the first place, from Pied Piper in order to settle a debt the Trickster owed him.
Soon after the Rogues stopped fighting, Gorilla Grodd invaded Central City, intent on taking it over. When Trickster tried to align himself with the gorilla fiend and act as a tour guide for the simian army, Grodd mercilessly ripped Trickster's right arm off from the bicep and left him to die in the street.
Trickster commissioned a slick new robotic arm in place of the one he lost and soon returned to crime. At a bar in Keystone City, Walker showed up and began to (foolishly) brag about his successes as a thief in the past when he was soon escorted away by a S.W.A.T. team for murder, something he swore he didn't do. While Walker was taken to Iron Heights, the Flash cleared his name by discovering evidence that Trickster was framed for the murder by Marissa Rennie but still needed to serve his prison term for plenty of other charges.
Deciding that Trickster deserved to be reinstated as a Rogue, the gang of villains prepared to break Walker out of Iron Heights but, as they approached the prison, it was ripped open by a mysterious speedster. Happily rejoining his former team, Trickster and the Rogues followed this mysterious savior to Happy Harbor. 
There, the Crime Syndicate announced that the Justice League was dead and that villains were allowed to roam free around the world. However, the Rogues, because of their morals, decided they weren't interested in the Syndicate's sinister agenda and returned to Central City, already in ruins by an invasion by Grodd and his army. Trickster, worried that opposing the new overlords could be unnecessarily dangerous, suggested joining them instead, but his idea was quickly shot down by Captain Cold, who insisted that they work to protect the city and, more importantly his comatose sister, from further decay. Because of their open defiance, the Rogues caught the attention of the Syndicate and were ordered to be executed by Deathstorm and Power Ring. 
Using the Mirror World to evade capture, the Rogues ended up disconnected from Cold when they were transported to Metropolis. There, Trickster was shot in the foot with a arrow from a villain trying to make a name for himself.
Again teleporting, the group found themselves in Gotham and were captured by Poison Ivy, who poisoned Trickster with her deadly kiss and threatened to let him die if Weather Wizard didn't use his powers to bring the sun back for her flowers. Unable to satisfy her demands, the Rogues tricked Ivy into healing Trickster anyway. The Rogues fled elsewhere in Gotham, but Trickster was lost along the way at the police impound lot. Briefly encountering Victor Zsasz, Walker reunited with the remaining Rogues, picking them up in a hotwired paddy wagon and escaping Gotham.
Though they were out of the Arkham War's path, the remaining Rogues were attacked by Johnny Quick, the crime lord that freed Iron Heights, who began to use his super speed to whoop Trickster and Mirror Master for opposing the Syndicate. Saved only by Weather Wizard and a little good luck, the Rogues were then forced to fight some of the Secret Society's deadliest foes after they were teleported to their location by Grid. Shooting them all into the Mirror World, Trickster and his allies were finally able to rest as the Crime Syndicate was defeated by the Injustice League, and heroes reemerged. 
Working with the Riddler
When Cold returned to crime, though, the Rogues were back in business. Secretly aligning himself with the Riddler, who had come to Central City to challenge the Flash, Trickster hoped that working with the criminal who caused the Zero Year in Gotham would make him a better Rogue. As payment for working as his right-hand man, Walker was gifted a new right hand, man. However, as the Riddler's plan to threaten every person in the city with drones left the Flash helpless, the madman betrayed Trickster and the other Rogues, causing the thieves to help Flash fight back and defeat the Riddler.
- Cybernetic Enhancement: After losing his right arm with his first encounter with Grodd,  Trickster was equipped with a new robotic one, essentially functioning like a normal human arm.
- Missing Limb: Axel's right arm was ripped off by Grodd during one of his early invasions.
- Axel Walker was created by Geoff Johns and Scott Kolins, first appearing in The Flash (Volume 2) #183 and Trickster was created by John Broome and Carmine Infantino, first appearing in The Flash #113. However, in the rebooted Prime Earth continuity his first appearance as part of the DC Universe is in Francis Manapul and Brian Buccellato's New 52 Flash series.
- 56 Appearances of Axel Walker (Prime Earth)
- 15 Images featuring Axel Walker (Prime Earth)
- Quotations by or about Axel Walker (Prime Earth)
- Character Gallery: Axel Walker (Prime Earth)
- The Flash Annual (Volume 4) #1
- The Flash (Volume 4) #3
- The Flash (Volume 4) #12
- The Flash (Volume 4) #13
- The Flash (Volume 4) #19
- The Flash (Volume 4) #20
- The Flash (Volume 4) #23.3: The Rogues
- Forever Evil #1
- The Flash (Volume 4) #23.1: Grodd
- Forever Evil: Rogues Rebellion #1
- Forever Evil #2
- Forever Evil: Rogues Rebellion #2
- Forever Evil: Rogues Rebellion #3
- Forever Evil: Rogues Rebellion #4
- Forever Evil: Rogues Rebellion #5
- Forever Evil: Rogues Rebellion #6
- Forever Evil #7
- The Flash (Volume 4) #51
- The Flash (Volume 4) #52
- The Flash (Volume 4) #13
- The Flash (Volume 4) #19
Secret Society of Super-Villains member