The term "Speed 9" was unfamiliar to many Superheroes, let alone ordinary people. There was no way regular people would know the term at all.
But as one of the Justice League's Trinity, Wonder Woman naturally knew it, because its existence had always been like Pandora's Box.
Mentioning this substance meant mentioning the "Savage," Vandal Savage. Many people believed he had merely lived long enough—that he was an immortal, Hawkman and Hawkgirl's arch-nemesis, and an old foe of the Justice League.
But in truth, many people overlooked how Vandal Savage traveled through time.
The Savage living at some future Time Point had invented a compound that could grant even ordinary people super speed, allowing them to run into the Speed Force Plane.
Anyone could do it by taking the drug, whether they were a baby crawling on the floor or an old man with a cane.
But the drug also came with extremely serious side effects. It accelerated aging, caused fatigue, bloodshot eyes, blank stares, excessive saliva production, and eventually sudden death.
Death in the truest sense—reduced to ashes amid the lightning of the Speed Force.
The Savage sold this compound to certain future villains, leading those villains to run back to the twenty-first century to play with Barry. As for himself, he used the drug as fuel for his Time Machine.
That allowed him to return to any Time Point through the device, earning him his notorious reputation for taking countless forms and causing trouble everywhere.
But he paid a price as well. Although the compound named "Speed 9" did not kill him, it affected his intelligence. There were obvious differences in IQ among the Savage's Hypertime Variants from before and after certain periods.
There was also another form of Speed 9 with different side effects. After Deathstroke of