Alternative Character Interpretation: The book is built half on this, showcasing many different versions of Batman by many different people. Most of the events that happen in the book can be interpreted in different ways, to boot.
Joker: Well I can't believe he didn't die the first time he dressed up as a giant bat and jumped off the roof.
Nightmare Fuel: Alfred's eulogy where he reveals himself to be The Joker.◊ That's right. The villain who crippled, stripped and possibly molested Barbara Gordon, beat up Jason Todd with a crowbar and blew him up before luring a young psychiatrist into a life of violence and cruelty was just Bruce's butler playing a part. Fortunately, all of the villains and victims were just playing a part, too. That assumes, of course that these events even happened in the timeline's story that Alfred was telling.