Professor Zoom
When Wally West's twins Jai and Iris are struck with crippling pain thanks to Professor Zoom, Iris takes Jai's connection to the Speed Force and nearly kills herself doing so. Jesse arrives and recites the now-revealed "Speed Mantra" to revive Iris, telling Jai and Linda West that Iris is the next generation of speedsters. The two join the battle between the revealed Professor Zoom and the combined forces of the three Flashes (Jay, Wally, and Barry), Max Mercury, and Kid Flash. With the speedsters reunited, Wally uses a trick with the Speed Force, revitalizing the speedsters and transforming his, Jesse's, and Iris's outfits. Jesse dons a uniform patterned after her father's.