Rainbow Raider (Earth-23)

History
Rainbow Raider is a metahuman villain from Earth-23.

Unmasked
When the Black Flash opened up several breaches on Earth-1, linking to many different Earths in the multiverse, the Rainbow Raider entered one of the breaches, and came across The Flash. The Flash commented that there was a doppelganger of the Rainbow Raider on his Earth (Earth-1), before the two of them did battle, in which the Flash won.

Related

 * Appearances of Rainbow Raider (Earth-23)