Flash [Barry Allen] (also views his birth via time travel); Reverse Flash [aka Professor Zoom; Eobard Thawne] (Villain); Henry Allen (at Barry's birth); Nora Allen (at Barry's birth); Iris Allen (cameo, as time travel through Barry's life); Flash [Jay Garrick] (cameo, as time travel through Barry's life); Lord of Limbo (introduction); Lord of Limbo's prisoners (introduction)
Synopsis
Flash leaves Reverse Flash to the time stream, and ends up in limbo, a prisoner of the Lord of Limbo, then goes on a run through his life trying to escape.