Justice League [Hereafter] (Spoilers - Maybe)

[Klaus]

Great re-cap. Just as a sidenote, Luthor was cloning Doomsday on the moon (and the thing almost killed Steel). Luthor sent Superman and Doomsday against Imperiex, who disintegrated D-Day.

When next we see Doomsday, it's at the White House, battling Superman in front of Luthor (this is after the war is over). As a big surprise, D-Day developed intelligence. As a result of that, Superman says that now that D-Day has self-awareness, he has developed a inherently fatal flaw: self-preservation. Now that D-Day isn't mindless, Superman can actually outthink him, and is thus no longer afraid of that mindless killing machine that had caused his death.

 

[Hand of Vecna]

Ah, yes, now I remember, during the Joker's Last Laugh storyline (a personal fave -- Jokerized versions of most every supervillain in the DCU!). After Supes KO'd Doomsday, Luthor took the body away, and gave it to Darkseid, as repayment for some misunderstanding that occurred during the Impreiex War.

Oh, and thanks for the accolades -- guess my many ranks in Knowledge: Trivia are paying off!