After Barry Allen survived the lightning strike, he could harness the Speed Force, a force that holds the multiverse together, allowing him to travel at great speeds and even break the time barrier. The Flash is undoubtedly one of the most powerful heroes in the DC Universe, meaning equally powerful, cunning and intelligent villains oppose him. If the Flash harnessed their powers and abilities, he could give himself an upgrade.
Source：https://www.cbr.com/flash-comics-best-useful-villain-upgrades/
