75 Greatest Friends and Foes of Batman: Allies #20-16
17. Wonder Woman
Created by William Marston, Wonder Woman and Batman are two-thirds of DC’s “Trinity,” but honestly both of them tend to relate more to the third hero in the Trinity, Superman, than they do to each other. That said, there’s clearly a close bond between the two fellow Justice League members. For a time there in Joe Kelly’s JLA they almost got together as a couple.
Their coolest interaction, though, in my opinion was in Greg Rucka and JG Jones’ graphic novel The Hiketia, where a young woman murders her rapists in Gotham City and then flees to Wonder Woman’s embassy and invokes a protection custom that puts her directly under Woman’s protection. Batman as a problem with this, but what can he do?
16. Batwoman (Kate Kane)
Batwoman (created by Greg Rucka, Geoff Johns, Grant Morrison and Mark Waid) is a bit of an odd Bat-character in that her interactions with Batman have been a bit sparse, as she was introduced in 52, a storyline that was based around the notion that Batman, Superman and Wonder Woman were gone for a year. Thus, when Batwoman shows up in Gotham City there IS no Batman there…
Kate Kane grew up in a rich family but also a military family (her mom was a socialite and her dad was a Colonel). She was kicked out of a military academy because of Don’t Ask Don’t Tell. She spiraled out of control for a while there and was just a wild socialite. However, after Batman tried to save her from a mugger (that she managed to take out on her own), she was inspired to become a vigilante. Eventually her father discovered her activities and decided to help her, as well as provide her with a fancy Bat-suit. She has since become one of the most successful heroes in Gotham City.
She finally encountered Batman during a Batman Incorporated story…