The New 52 changed a lot of things about many DC characters, and one of the most terrifying changes was for Doomsday. After the New 52 changed his core character, Doomsday could emit toxic spores ...
Still, Doomsday has always been unrelenting ... The problem with that assumption is post-New 52 Superman and pre-New 52 Superman were merged during the events of Superman: Reborn by Dan Jurgens ...