In 2003, with writer Geoff Johns' relaunch of a new Teen Titans volume, Bart donned the mantle of Kid Flash after being nearly killed by the assassin Deathstroke.

Apparently killed by the Rogues, Bart was resurrected in the 31st century by Legion of Super-Heroes member Brainiac 5 and retook the mantle of Kid Flash.

The Wally West Kid Flash was first adapted for live action in the Arrowverse series of TV shows, played by Keiynan Lonsdale.

[6] The boy speedster first met Robin and Aqualad in The Brave and the Bold #54 (June–July 1964), in an adventure that would predicate the formation of the Teen Titans shortly thereafter.

Kid Flash remained a member in good standing of that team, though his participation limited his involvement in solo adventures considerably.

At 18 Wally revealed his alter-ego to his parents Bob and Mary for the first time, chose his university (Taggart), and confided to the Flash his intentions to retire from superheroing upon graduation from college so that he might live a normal life.

As it happened, he left his crime-fighting career behind even before that,[7] when he retired from the third incarnation of the Teen Titans for personal reasons, including a desire to devote more time to studying, to his new girlfriend Frances Kane, and because, as a result of his changing metabolism, he was beginning to lose his powers.

When a mysterious android from the future known as Indigo attacked the Titans and Young Justice, it resulted in the apparent deaths of Donna Troy and Omen.

[8] This led Wonder Girl, Robin, Impulse and Superboy to form a new group of Teen Titans under the guidance of the more experienced Cyborg, Starfire, and Beast Boy.

Thankfully, his accelerated healing enabled a handful of surgeons to replace his kneecap with an artificial one, and Bart was back on his feet in a matter of hours, but the effects of this encounter were much more than physical.

Although Bart found new challenges in harnessing the speed force, he accepted his destiny as the latest Flash in the Allen family tradition.

Shortly after resuming the mantle, Iris Allen warned Bart that if he fought the newly formed league of Rogues, he would not survive.

As a depowered Bart fought valiantly against the combined might of the Rogues, he saw the spectre of the Black Flash, and died as Iris Allen and Valerie Perez were left to mourn him.

[14] Later on New Earth, during the Final Crisis storyline, Superman was called to the thirty-first century to assist the Legion of Super-Heroes in fending off Superboy-Prime, who was thrown to the future in the aftermath of the destruction of Earth-51 and the Sinestro Corps War.