Reverse-Flash

Reverse-Flash is a name which has been used by several fictional characters in American comic books published by DC Comics. Many are fast, and are enemies and foils of the superheroes known as the Flash.

Edward Clariss (also known as the Rival and Rival Flash) first appeared in Flash Comics #104 (February 1949). Dr. Edward Clariss, a professor at the university attended by the Golden Age Flash, has recreated the formula which was behind Jay Garrick's speed as Velocity 9. He heard Joan Williams talking about how the Flash gave his own speed to another student, which helped him develop the formula. Bitter at the scientific community's rejection of his claims, Clariss becomes a criminal. A darker version of Flash with a mask over his head, he gives the formula to other criminals. The Rival's version of the formula is temporary, and he is captured and jailed.

JSA #16 (November 2000) contains a flashback to a battle between the Rival and the Flash several months after Clariss' first appearance. Clariss, who has inexplicably regained super speed, reaches light speed during the fight and vanishes into the Speed Force. After the reformation of the Justice Society of America 50 years later, Johnny Sorrow retrieves Clariss from the Speed Force and invites him to join the Injustice Society. The Rival, driven insane in the Speed Force, races across the country on a killing spree. The Flash realizes that the Rival's path across the country spells out Clariss' name and the final murder will be Jay's wife Joan Garrick; Jay absorbs the Rival's speed before he can kill Joan.

The Rival returns in Impulse #88 (September 2002), posing as Joan Garrick's doctor. Now pure speed energy, he possesses Garrick's fellow Golden Age speedster Max Mercury. After battling Jay and Impulse, Max time-travels to an unknown destination. In The Flash: Rebirth #4, Max Mercury escapes from the Speed Force and is rejuvenated by Wally West's energy; this allows him to return to Earth in a new body. Another Golden Age Reverse Flash is a robot whose only appearance was in one panel of The Flash vol. 2, #134 (February 1998), where he is defeated by Garrick. And he might appear in injustice 2 (Year 2017) The Month hasn't been revealed

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