I think 'The Long Halloween' is a top - notch Batman villain story. It's a mystery - thriller that has Batman trying to figure out who is committing murders on holidays. The story involves many of his classic villains like Two - Face, the Penguin, and the Riddler. It shows how they interact with each other and with Batman in a complex web of crime and deception.
One possibility could be that Batman, after facing one too many betrayals in Gotham, decides to take a different path. Maybe the constant struggle against crime with little real change in the city makes him cynical. He could start using his skills and resources to control the underworld instead of fighting it. For example, he might start dictating which criminals can operate and where, creating a new order that is still dark but under his command.
One of the best is 'The Killing Joke'. It delves deep into the Joker's origin and his complex relationship with Batman. The art and the dark, psychological themes make it a classic. Another great one is 'A Death in the Family' which involves the Joker killing Robin. It's a very impactful story that shows the true brutality of Batman's villains.
The Joker's origin is quite complex and has been told in various ways. One popular version is that he was a failed comedian who had a bad day that pushed him over the edge into madness. Another villain, Two - Face, was once Harvey Dent, a respected district attorney. But after a tragic accident involving acid, which horribly disfigured half of his face, he became Two - Face, with his dual - natured personality representing the struggle between good and evil within him. And then there's Catwoman. Her origin often involves a life of crime born out of necessity, growing up in a tough environment that led her to steal to survive, but she also has a sense of justice that makes her relationship with Batman so interesting.
Maxie Zeus is a rather unique villain. His origin story has him as a man who became so obsessed with Greek mythology that he started to believe he was Zeus. He uses his knowledge of mythology to plan his crimes in a rather elaborate way. Calendar Man is another one. His origin is linked to his obsession with dates and time. He commits crimes based on significant dates in the calendar, often using his knowledge of history and events related to those dates to create elaborate and symbolic crimes.
In my opinion, 'The Dark Knight Returns' has some great villain stories. It shows an older Batman facing off against old foes like the Joker in a more brutal and gritty way. The story is a great exploration of Batman's relationship with his villains as he comes out of retirement.
Two - Face, also known as Harvey Dent. He was a respected district attorney in Gotham. However, during a trial, a mob boss threw acid at him, which horribly disfigured half of his face. This physical and mental trauma caused him to develop a split personality. One side is still the law - abiding Dent, while the other is a vengeful and criminal - minded Two - Face. He makes decisions based on the flip of a coin, which represents the duality of his existence.
One of the best is 'The Killing Joke'. It delves deep into the Joker's psyche and his relationship with Batman. Another great one is 'Arkham Asylum: A Serious House on Serious Earth', which offers a really dark and twisted look at the inmates of Arkham, including many of Batman's most notorious villains. And 'Hush' also stands out, with a great mystery involving Batman's villains working together in a complex plot against him.
His relationship with other villains can change. After saving Batman, he might be shunned by his fellow villains, which could lead to him further exploring his new - found moral side. He could then form an uneasy alliance with Batman to fight against the other villains who now see him as a traitor.