Earth 12 was a universe whose timeline ran at a slightly advanced pace in comparison to Earth 0. Home to the Justice League Beyond, Earth 12 was a world where Bruce Wayne trained Terry McGinnis to succeed him as Batman and lead the new League. Along with the other Leaguers, McGinnis faced with them the dangerous threats of the untamed future reality. Big Barda was known to have spent time touring on Earth 12 as a member of the Justice League Beyond. When exactly this fit in to her adventures in regards to the Second Apokolips War, however, was unknown although it was likely earlier as that war left her stranded on Earth 2.