The sinister enemy of the Flash put his own creative (and quite disturbing) spin on origin stories. Before he ever set out to ruin Barry Allen's life, the Reverse-Flash tried perfecting his own, only to discover the process wasn't as easy as he thought.
Few villains in comic books have as much hatred for their adversaries as Reverse-Flash has for Barry Allen. Once a fan of the Flash from the 25th century, Eobard Thawne desperately attempted to recreate Barry's famous accident and become a speedster himself. Though successful in his attempts, Thawne discovered he was fated to become the Flash's nemesis, the Reverse-Flash, a revelation that completely broke his mind. While Thawne wants nothing more than to kill his enemy, he needs Barry alive to inspire him in the future. Instead, the Reverse-Flash resolved to use his mastery of speed and time to make the Flash as miserable as possible.
Related: Even DC Knows Flash's Reverse Villain are Getting Old
But it appears that before Thawne set out to destroy the life of Barry Allen, he practiced manipulating the timeline to change his own life. In Flash #8 by Geoff Johns and Scott Kolins, the villain narrates his secret origin starting from his youth. In the 25th century before Eobard Thawne becomes the Reverse-Flash, Thawne has a little brother whom he despises...until a demonic figure in red lightning removes Eobard's sibling from the timeline completely. Eobard later loses out on a highly-coveted spot working at the Flash museum, until Thawne's main competitor also disappears from the timeline. As Thawne details his life, the Reverse-Flash is shown 'improving' history to give himself everything he ever wanted, even helping his past self find the crucial key to accessing the
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