Speed Demon is Jerry McGee, an enemy of the Flash. He and his wife Tina McGee are also friends of Wally West. Originally a scientist at S.T.A.R. Labs, his mental instability and obsession with his work led to the destruction of his marriage, after which he went crazy and became bent on revenge. Developing a high-tech suit that would imbue him with super-speed through steroid usage, he became a costumed super-villain. McGee was eventually brought back to normal, and even reunited with his wife. Speed Demon was created by Mike Baron and Jackson Guice, first appearing in Flash (Volume 2) #5. (1987)