10 DC Characters Who Discovered Batman's Secret Identity
4. Zatanna
In one of the more unconventional discoveries of Batman’s true identity, Zatanna’s initial reason for knowing about Bruce Wayne’s secret night life manages to be one of the best reasons to ever be retconned, as she is revealed to have been childhood friends with the hero.
Not only is it a reasonable way for the magician to have an inkling into his secret identity, it also serves to show us a more casual Batman – as Zatanna is one of presumably very, very few friends who know both of Wayne’s identities.
While this backstory was retconned for a more generalised ‘Batman told the superheroes closest to him’ explanation, this doesn’t overshadow the fascinating dynamic that comes from Batman having a childhood friend who knows his secret identity without also wanting to murder him for it.