Later, well after Wally West had made a name for himself as the new Flash, the character of Bart Allen, grandson of the second Flash Barry Allen, was brought into the past from his home in the future and served as the young hero Impulse.
Daha sonra, Wally West kendisini yeni Flash olarak isimlendirdikten sonra, ikinci Flash Barry Allen'in torunu Bart Allen'in karakteri, gelecekte evinden geçmişe getirildi ve genç kahraman Impulse olarak hizmet etti.