Well, one possibility could be that Naruto, as Lex Luthor's son, might struggle with his dual identity. He has the ninja skills from his Naruto side and the scientific and strategic mind from Lex Luthor. Maybe he uses his unique combination of abilities to fight against new villains in the Naruto world who are also after Lex Luthor's technology or knowledge.
One main antagonist could be Lex Luthor's business rivals from his world. They might see Naruto as a way to get to Lex Luthor, so they would constantly try to capture or harm him. Another could be some of the traditional Naruto villains who sense this new threat in the form of Naruto with his unique heritage and abilities. They would want to eliminate him before he becomes too powerful.
Well, Naruto would probably have a different set of skills. Lex Luthor is into science and technology. So Naruto might be more tech - savvy. He could use this knowledge to enhance his ninja techniques. For example, he could create high - tech ninja tools or develop new ways to use chakra with the help of Lex's scientific knowledge. And his relationship with other characters would change. Some might be suspicious of his new - found knowledge and associations, while others might be intrigued and want to learn from him.
One great Lex Luthor OC fanfiction is 'The Luthor's New Ally'. It offers a fresh take on Lex's character by introducing an original character who challenges his views in unexpected ways.
It can be disrespectful to the original source material and the intentions of the creators. The character of Lex Luthor has complex traits that should be explored in more meaningful ways.
He could be more secretive. Lex Luthor often has his own hidden agendas. Growing up with him, Naruto might learn to keep his plans and thoughts to himself more. This would be a departure from the open - book Naruto we know, who usually wears his heart on his sleeve. However, he would still have his core of kindness, but it might be expressed in more subtle ways. For instance, instead of loudly proclaiming his desire to protect everyone, he might quietly work behind the scenes to achieve the same goal.
To write a good Lex Luthor OC fanfiction, focus on the relationship between the OC and Lex. It could be a friendship, an enmity, or a complex mix of both. Also, make sure the plot is engaging. Maybe the OC has a secret that Lex wants to uncover, or vice versa. And don't forget to stay true to the DC universe's tone and style.
The concept of morality often comes up. Lex is often seen as a morally gray character. In crossovers, this is contrasted with the moral compasses of the characters in the other universe. For instance, in a crossover with a more utopian - like universe, his self - serving actions are highlighted even more. Also, exploration of new technologies or powers is common. If he crosses into a world with magic, he might try to understand and harness it for his own purposes.
Most mainstream platforms do not allow such explicit fanfiction due to their terms of service. It also goes against the respect for the original characters in a rather improper way.