I'd say Harley Quinn. She has a very unique relationship with the Joker. Her love for him, despite his insanity and abuse, adds a lot of depth to her character. And then there's Robin. His youth and idealism in the face of the Joker's evil present a great contrast. He represents the hope that Gotham can be saved from the likes of the Joker.
Harley Quinn is quite interesting. She's caught in the middle between her love for the Joker and her own sense of self. Commissioner Gordon is also important. He's the one who often has to deal with the aftermath of Batman and the Joker's battles and is a symbol of the law in Gotham.
Definitely 'The Killing Joke'. It's often praised for its exploration of the Joker's character and its psychological depth. Critics love how it blurs the line between sanity and madness. Another is 'Arkham Asylum - A Serious House on Serious Earth' which is lauded for its unique art style and its dark, disturbing portrayal of the Joker and the asylum.
In the 'Joker 2008 Graphic Novel', the Joker is the central character. He is likely to interact with other well - known characters from the DC universe. This could include Commissioner Gordon, who often has a role in stories involving the Joker. There may also be some original characters created specifically for this graphic novel to add new dimensions to the story.
Batman's allies are very likely. For example, Robin. The Joker would see kidnapping Robin as a great way to taunt Batman. Also, Commissioner Gordon might be a target as he represents law and order, which the Joker loves to disrupt.
There's Harley Quinn. She has a complex relationship with the Joker and is often his accomplice. Another important character could be Commissioner Gordon. He's always trying to keep the city in order in the face of the Joker's chaos.
Batman is extremely common. Since the Joker and Batman have such a long - established relationship in the original comics, it's natural to see them cross over in fanfics. Their eternal battle of wits and the Joker's attempts to outwit Batman in new and different universes make for great reading.
The main character is likely the Joker himself. He's the central figure in most of his storylines.
The main characters are Batman and the Joker. Batman is a vigilante who fights crime in Gotham City. The Joker is his arch - nemesis, a chaotic and unpredictable criminal.
Most likely Batman and the Joker. Since it's about the Joker's actions in relation to 'death of the family', Batman would be the main hero trying to stop him.
The main character is obviously the Joker. He is the central focus of the story, driving the plot forward with his chaotic and unpredictable actions.