This post follows up from a discussion that began
here.
The 1990s Batman saga KNIGHTFALL officially began with BATMAN # 492, though the long prelude to the story begins as early as BATMAN # 484 and the VENGEANCE OF BANE and SWORD OF AZRAEL specials. It was in BATMAN # 484 that Batman/Bruce Wayne's mental and physical breakdown first became clearly evident, but in fact, it's possible to interpret that the breakdown's seeds were actually planted several years earlier, and had been creeping up slowly...imperceptible at first, and then becoming alarmingly apparent during the prelude issues of BATMAN and DETECTIVE COMICS.
We'll start with Batman/Bruce Wayne at 100% capacity - physically and mentally in his prime and at the top of his game, and trace the breakdown.
1. The first brick to fall was in BATMAN # 408, a flashback story to Dick Grayson's final adventure (with Batman) as Robin and the introduction of the Post-COIE version of Jason Todd. According to the story, this was the first time that Robin/Dick had ever sustained such a serious injury during his adventures with Batman, and the incident so alarmed Bruce that he abruptly fired Dick as Robin after six years as his crimefighting partner. Though Bruce typically did not show it, this was a difficult moment for him and the first chip in his resolve. With this incident, Bruce dropped from 100% to 98%.
2. Bruce trained Jason to be the second Robin, and at first, all seemed well, until Jason discovered that his father was murdered by Two-Face and began to behave ever more rebelliously, making his tenure as Robin much more troublesome for Bruce than Dick's tenure had been. Also included was a confrontation with Dick, who came back to Gotham (as Nightwing) a year and a half after being fired as Robin to demand an explanation from Bruce as to why Jason was recruited to replace him as Robin. These incidents took Bruce down to 95%.
3. The Deacon Blackfire incident from BATMAN: THE CULT. If you've read this story, you know that Batman endured a terrible physical and mental ordeal that rivaled what he would later experience in KNIGHTFALL. The incident so affected Bruce that he briefly toyed with the idea of quitting as Batman, and shortly after Jason's demise in A DEATH IN THE FAMILY, Bruce acknowledged to himself that he hadn't been at the top of his game since the events of THE CULT. I would say this incident took Batman's resolve down to 75%.
4. THE KILLING JOKE: the crippling of Barbara Gordon (the former Batgirl) and the torture of Jim Gordon by the Joker was another traumatic incident for Batman. I would say this took him down to 65%.
5. A DEATH IN THE FAMILY: this was big...the loss of Robin (Jason Todd), which haunted him for years (including during KNIGHTFALL). I would say Jason's death took Batman down to 40%.
6. The arrival of Tim Drake as a potential (and eventual) third Robin arrested Batman's descent temporarily, but Batman's failure to save Tim's parents from the Obeah Man (Jack Drake falls seriously ill and Janet Drake dies) weighs heavily on Bruce. Batman down to 30%.
7. Death of Superman: seeing the world's greatest and most powerful hero...and one of his closest friends...fall in battle has a profound mental/emotional effect on Batman. In the back of his mind, it must have occurred to him, "If even Superman can fall, how vulnerable are the rest of us? How vulnerable am I?"). Batman down to 10%.
8. Events of SWORD OF AZRAEL, were also a physical and mental ordeal (he was tortured) for Bruce. Batman down to 0%.
His reserves of resolve expended, Batman collapses during KNIGHTFALL.
Buried Alien (The Fastest Post Alive!)