The Flash Annual #4

Flash has the ability to develop a supersonic speed and use superhuman reflexes, which violates several laws of physics. So far, there are four characters who have the ability to super speeds and performed under the name Flash: Jay Garrick, Barry Allen, Wally West and Bart Allen-2007, 2009-present). Before you put on a suit, Flash, Bart Allen and Wally West was a protégé of the current at the time Flash and Kid Flash were alias