The Flash [Barry Allen]; Flash [Wally West] (also as Kid Flash in flashback); Famine; Impulse [Bart Allen] (flashback); Flash [Jay Garrick] (flashback); Iris West (flashback); Max Mercury (flashback); Flash of China [Avery Ho] (flashback); Captain Cold (flashback); Calculator (flashback); Cybeast (combined form of Cyborg and Beast Boy)
Synopsis
With his allies either dead or gone, Barry Allen, without the power of the Speed Force, uses science to adapt the weapons of his former enemies to use to stop Wally's murderous rampage by any means necessary.