When Bizarro III was fused with radiation from a blue sun, he discovered he could replicate himself. He used this power to populate Bizarro World and created Bizarro Flash as one of the many duplicates. He worked with Bizarro Batman, Yellow Lantern, Bizarro Hawkgirl and Bizarra to save Bizarro Doomsday.
Bizarro Flash is serious and never laughs. He runs slow but has the ability to fly up to the speed of light. While Flash makes wise cracks to hide his pain, Bizarro Flash eats to hide his laughter and joy.