In their attempt, the Red Death is exposed to an intense blast of the positive energy of creation from the baby universe, reversing him. This creates a Reverse Flash (just like the Flash's nemesis in the main DC Universe) out of the Red Death — turning him into a good guy.14 feb 2018
Who is the red speedster?
Josef, also known as Red Rush, was a Russian speedster and the Guardians of the Globe's first responder. He was an original member of the Guardians of the Globe, and had worked with Omni-Man, before they were betrayed and murdered by him.