dead". Return: Kid Flash again In Final Crisis: Legion of 3 Worlds mini-series, Bart Allen returns as his teenage self in his Kid Flash attire when Brainiac 5 enacts phase two of his plan to defeat Superboy-Prime and the Legion of Super-Villains. His resurrection is brought about by the activation of the "living lightning rod" first seen in The Lightning Saga. Brainiac 5 explains that Bart was destined to die one way or another, because his leap from child to adult had jump-started Bart's hyper-accelerated aging again, and that had the Rogues not killed him, he would have been dead of old age within months. Because he is needed for the battle against Superboy-Prime, Brainiac 5 sends the Legion back to the 21st century to use Wally West's lightning bolt to house Bart's childlike Speed Force essence. In the 31st, he then uses the combined power of the Lightning Lads and Lighting Lasses, along with XS running on the cosmic treadmill, to release Bart from the Speed Force. Bart and XS make mention that they feel a new strength emanating from the Speed Force, suggesting they can feel Barry Allen's return, although Bart believes it to be Max Mercury instead. Soon after Bart's resurrection, Superboy is also resurrected by the Legion. Together the pair aid the Legion in defeating Superboy-Prime by having him destroy himself (literally). Bart tries to convince XS to return to the past with him, but she instead decides to stay in the future, getting to know their new Earth. Once returned to the present, Superman assembles the Teen Titans as well as the adult Titans together, and re-introduces them to Kid Flash and Superboy. The Flash: Rebirth In The Flash: Rebirth storyline, Bart quickly discovers that things had changed significantly since he had been away. Barry Allen, his grandfather and legendary speedster who had sacrificed himself against the battle with the Anti-Monitor, had also returned from the grave. At Teen Titans Tower West, where Robin and Wonder Girl have planned a welcome home party for Bart while everyone else is at the parades for Barry, Bart views his grandfather's return with skepticism, admitting a desire for things to "go back to the way it used to be". He wishes that Wally was still the primary Flash and he would still be his sidekick. Bart's bitterness, though, centers on feeling angry that Barry is the only one