According to Grant Morrison on The Multiversity #1, Superdoom takes place on "Earth-45".--Drgyen (talk) 22:04, August 25, 2014 (UTC)
Lois & Clark[]
Our article on Superdoom itself identifies those two as inhabitants of Earth 23. And if that's not true, since Superdoom is a dimension-hopper, there's no indication they're Earth 45. --Tupka217 23:07, November 4, 2014 (UTC)