Professor Zoom
Her resolution wanes with the return of the first Reverse-Flash, Professor Zoom, during "" event. Since Jai's and Iris' connection to the Speed Force is still precarious, the attempts of Zoom to disrupt it force both kids to endure a large amount of crippling pain, until Iris decides to take the bulk of the Speed Power connection, freeing Jai but taking the pain for herself. At the last moment Jesse Chambers, guided by the late Johnny Quick, uses the "Speed Mantra" to save Iris' life, once again restoring her full potential.