Professor Eobard Thawne (c. 2151 - May 19, 2015) was a meta-human speedster from the 22nd century, a descendant of Eddie Thawne, a time criminal, and the archenemy of Barry Allen/The Flash as well as an enemy of the Legends. Obsessed with the 21st century's Flash, Eobard recreated the accident that gave the Flash his powers and became a speedster himself. But after his very first travel back in time, Eobard learned that he was destined to become the Flash's archenemy and grew to despise the hero, attempting to prove his superiority as the Reverse-Flash and therefore became the opposite of his former idol. Since then, the two speedsters battled one another for many years, but neither of them were strong or fast enough to defeat each other.