!The TV Series
* HeyItsThatGuy:
** [[Series/{{ER}} Dr. Mark Greene]] is now a conspiracy journalist assisted by [[Series/TheRiver Jonas the cameraman.]]
** [[MillenniumTrilogy Mikael Blomkvist]] appears to have an evil twin with ProphetEyes.
* ScrewedByTheNetwork: Creator/{{ABC}} probably knew that the show would succumb to the Thursday 8pm "Curse Slot"[[note]]''Series/UglyBetty'' is the only scripted ABC series that's lasted more than a season in the last ''three decades''[[/note]], since it was going up against ''Series/TheBigBangTheory'' and ''Series/AmericanIdol''. Although even by the Curse Slot standards, this was a bomb - a 1.4 Adults 18-49 rating for the premiere (vs. low 2 premieres for [[Series/CharliesAngels last three]] [[Series/{{Missing2012}} ABC shows]] [[Series/LastResort in the slot]]).

!The Comic Book
* WhatCouldHaveBeen: Years after Zero Hour had been finished, Alex Ross proposed a limited series entitled ''Batboy''. Based off the Super-Sons imaginary story from the 1970s, ''Batboy'' featured an idealistic future of the DCU, with Batboy and his best friend Superman Jr. as the main characters. The original JLA would've been retired, with the Comicbook/TeenTitans now comprising the League. Other heroes would be Batwoman (Barbara Gordon) and Superwoman (Kara Zor-El), Barry Allen's kids the Tornado Twins, and Aquaman's still-living son, Arthur Jr.. The Joker would still be active, only with a teenage daughter by his side. Harvey Dent would've been cured of his psychosis and acting as a tutor for Bruce Jr., who would have a baby sister named Helena. The only still active member of the original League would've been Hal Jordan. How this ties into ''Zero Hour'' is that Batboy would've realized this world seemed too ideal, and would discover that, this was the end result of Hal's attempt to remake the DCU, and would confront him on it. Character designs and plot information for this series were released in Ross's art book ''Rough Justice''.