The unique part is its main character. He is not just a typical assassin. He has his own code of ethics that sets him apart from others in his line of work.
The main character is, of course, the assassin. His name and his specific backstory are central to the story. There are also likely to be other important characters such as his targets, his allies who might help him in some missions, and his enemies who are trying to stop him.
A unique setting can make it stand out. For example, if the assassin operates in a world with a strange magic system or a very different historical period.
It depends on various factors. Some people are really into assassin novels because they offer a different kind of hero or anti - hero. If 'worlds finest assassin novel' has a great narrative that explores the character's journey, motives, and the world they operate in, it could gain a following. Also, if it manages to stand out from the crowd of other assassin - themed books with its own unique style, it has a good chance of being popular.
It's more modern in terms of art and storytelling. The New 52 version has a different aesthetic compared to older comics. It often has a faster - paced plot.
Lex Luthor is often an interesting character in such fanfictions. He might be the one pulling the strings behind the scenes, fueling Batman's distrust of Superman. Another could be Alfred. His wisdom and influence on Batman can add depth to the story. He might try to talk Batman out of fighting Superman or help him in a more covert way. And then there's Wonder Woman. She could be caught in the middle, trying to mediate between the two or having her own motives for getting involved in their conflict.
Catwoman can also be a popular character. She could be in a love - triangle situation with Batman, and her thieving ways might put her at odds with the female Superman who stands for truth and justice. There could be some really interesting interactions between the three of them, like Catwoman trying to steal a valuable item that the female Superman is protecting, while Batman is caught in the middle, not sure who to side with at first.
Wonder Woman could also be involved. She might be caught in the middle, trying to stop the fight at first. But if she realizes that Superman is being a threat for some reason, she could side with Batman, or at least not interfere in Batman's attempt to defeat Superman.
One of the best is 'The Dark Knight Returns'. In this story, an older Batman comes out of retirement and has a memorable encounter with Superman. It shows their ideological differences and the complex relationship between them. It's a gritty and thought - provoking take on their dynamic.
Batman vs Superman's story involves a complex web of events. There's public pressure, personal vendettas, and a looming threat that forces them to either work together or destroy each other. It's a battle of wills and powers.