Lois Lane is a must - include. She can be the love interest and also a strong - willed journalist. Jimmy Olsen is also great, providing some comical relief and being Superman's friend. Lex Luthor is an obvious choice as the main villain, always plotting against Superman.
One idea could be having Superman face an enemy that can manipulate time, causing chaos in Metropolis. Another could be a story where he has to deal with a powerful alien artifact that is affecting his powers. Maybe also a plot where he teams up with a new superhero from another planet.
Superman, of course, is the most important. Then there's Lois Lane, the journalist who is always on the hunt for a story and has a special relationship with Superman. Lex Luthor is also crucial as the main antagonist.
In the 'The Adventures of Superman Novel', a significant plotline is Superman's origin story. How he came from Krypton and was raised on Earth. His discovery of his powers and how he decides to use them for the greater good. Also, his relationships with Lois Lane and other characters in Metropolis play a big part in the plotlines as he tries to balance his personal life with his superhero duties.
Obviously, Superman himself is the most important. He is the hero with superpowers. And Lois Lane is also important as she is often in the middle of the stories and has a relationship with Superman.
One main theme could be heroism. Superman is always saving the day, which shows the importance of having heroes. Another might be justice as he fights against evil to bring fairness.
Another challenge is the potential for negative reception. Since it goes against the traditional view of Superman in the mainstream media, some fans may not be accepting of such a concept. Writers need to be prepared for criticism while also trying to tell a good story. Also, from a creative perspective, coming up with a unique plot that involves this relationship and still has the elements of a good Superman story, like action, adventure, and saving the day, is no easy feat.
First, come up with an interesting concept. It could be something like a new villain for Superman to face or a different origin story for him. Then, start creating your characters. Decide if you want to use the existing Superman characters or introduce new ones.
First, think about their origin. It could be something completely different from Superman's. For example, instead of being born with powers, they could gain them through a magical encounter. Then, focus on their personality. Maybe they're more cynical than Superman because of their experiences. Also, consider their appearance. They could have a distinct costume or physical features that set them apart.
There are many fan - created platforms out there, but it's important to note that such content may not be endorsed by the official Superman franchise. You could try looking in some of the larger fan - fiction communities, but be aware of the rules and regulations regarding appropriate content within those communities.