Zatanna Zatara: The first occasion in which Zatanna was portrayed as a strong romantic interest of Bruce Wayne was in Batman: The Animated Series, where the two of them met in their youth and were interested in each other, but Bruce gave priority to the pursue of his training to become Batman. As adults they met again and realized they cared for each other, but nothing came out of it. This history was later introduced to the comics. Batman and Zatanna had a major falling out after Bruce found out Zatanna had mindwiped him after he walked in on her mindwiping Doctor Light at the Justice League's instruction. Batman made it clear that after these incidents, he no longer trusted Zatanna. However, the two eventually resolved their issues and became close friends once again.
Over the course of the first few Batman strips elements were added to the character and the artistic depiction of Batman evolved. Kane noted that within six issues he drew the character's jawline more pronounced, and lengthened the ears on the costume. "About a year later he was almost the full figure, my mature Batman", Kane said. Batman's characteristic utility belt was introduced in Detective Comics #29 (July 1939), followed by the boomerang-like batarang and the first bat-themed vehicle, the Batplane, in #31 (Sept. 1939). The character's origin was revealed in #33 (Nov. 1939), unfolding in a two-page story that establishes the brooding persona of Batman, a character driven by the death of his parents. Written by Finger, it depicts a young Bruce Wayne witnessing his parents' murder at the hands of a mugger. Days later, at their grave, the child vows that "by the spirits of my parents [I will] avenge their deaths by spending the rest of my life warring on all criminals".
Joker, however, had discovered the ruse sooner than he expected and followed him to the pool. Having already retrieved samples to create a cure to the toxin, Batman fought his arch nemesis for what seemed to be the last time, during which he and Joker sustained several grave injuries. With the cave collapsing from explosives set off, Batman stopped Joker from escaping by holding him away from the pool, which was blocked with the falling rock. With Gotham once again saved, Batman accepted that he would die and sent one last message to Julia, during which he refused her help to escape his fate. He and the Joker would seemingly die as the cave collapsed upon them.
The end result was a character who looked like he would fit right along famous pulp heroes like the Shadow, with a distinct-looking cowl and a cape that still managed to maintain some of its wing-like approach. This was the type of character that you would take one glance at and think, "Yeah, this dude wouldn't mind snapping a neck or two to get the job done." That fit the early style of Batman stories perfectly.
1994's company-wide crossover Zero Hour changes aspects of DC continuity again, including those of Batman. Noteworthy among these changes is that the general populace and the criminal element now considers Batman an urban legend rather than a known force. Similarly, the Waynes' killer is never caught or identified, effectively removing Joe Chill from the new continuity, rendering stories such as "Year Two" non-canon.
After an incident where the Justice League and Suicide Squad were forced to team up, Batman began constructing an new team of backstreet heroes to act as another team alternative for the League. After he was attacked by the Reverse-Flash, Batman would witness his apparent death and, with the Flash's help, decided to investigate what had caused the incident. Together, the two discovered the Flashpoint timeline had continued to exist and encounter that timeline's Batman, Thomas Wayne. With his father urging him to give up his life as Batman, Bruce decided to settle down and became engaged to Catwoman.
In those days it was like, one artist and he had his name over it [the comic strip] — the policy of DC in the comic books was, if you can't write it, obtain other writers, but their names would never appear on the comic book in the finished version. So Bill never asked me for it [the byline] and I never volunteered — I guess my ego at that time. And I felt badly, really, when he [Finger] died.