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* The very concept of Superman and Batman teaming up is awesome per se.
* The second story arc brought Kara Zor-El ''Comicbook/{{Supergirl}}'' back after nearly twenty years. Since then she has become again a staple of the Superman and DCU mythos.
* In ''ComicBook/SupermanBatman'' #25, Darkseid sticks Superman on the Source Wall (the edge of the universe). However, Superman is freed by... an army of ''Comicbook/{{Supergirl}}s: original Silver Age Kara Zor-El, ''Comicbook/PowerGirl'', Linda Danvers, Cir-El and post-Crisis Kara Zor-El leading them all.
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