One common theme is the clash of cultures. For example, when Itachi is in a different universe like the Star Wars universe, his ninja way is very different from the Jedi or Sith code. So, there's often exploration of how his values and beliefs interact with the new world's. Another theme is power comparison. When he meets characters like Goku from Dragon Ball, there's a comparison of their different power levels and how Itachi can hold his own.
Another good one is 'Itachi Meets the Avengers'. Here, Itachi's calm and strategic mind makes for some amazing interactions with the Avengers. His abilities seem out of this world to the heroes at first, but they soon realize how useful he can be in battles against powerful foes like Thanos.
He could also develop through facing new threats in the RWBY world. The Grimm are different from his usual opponents in Naruto. Dealing with them might force him to adapt his combat style and in turn, grow as a character. For instance, he might have to rely more on others' skills in a team - based RWBY battle scenario.
One interesting 'godlike Itachi' crossover fanfiction could be one where he crosses over into the Naruto Shippuden universe at a crucial point and changes the entire outcome of the war with his godlike powers. For example, he might be able to single - handedly defeat Madara before he fully awakens his plans. Another could be a crossover with the Bleach universe, where Itachi's Sharingan abilities are pitted against the Soul Reapers' powers, creating a really unique power dynamic.
Another one is 'Itachi Meets the Justice League'. This fanfic imagines Itachi coming face - to - face with Superman, Batman and the rest of the Justice League. His skills are put to the test as he tries to find his place in this new world filled with super - powered heroes. It's exciting to see how he uses his Sharingan to outwit some of the most powerful beings in the DC universe.
Madara Uchiha could still be a great antagonist. Even with Itachi and Naruto teaming up, Madara's power and his long - term plans for the ninja world would pose a huge threat. His knowledge of the Sharingan and his connection to the Uchiha clan would make for an interesting conflict against Itachi, while his overall strength would be a challenge for Naruto as well.
One interesting concept could be Itachi's Sharingan abilities in the RWBY universe. His visual prowess might be used in unique ways during battles against Grimm. For example, he could use the Sharingan to predict Grimm movements more accurately, similar to how he reads his opponents in the Naruto universe.
One of the most popular themes is the exploration of their complex relationship. Fans often write about how they could have reconciled in an alternate universe. Another theme is power - how their combined powers could be used against a common enemy. And family loyalty is also a big one, delving into how their family ties influenced their actions and how that could be different in a fan - made scenario.
One common theme is the clash of cultures. Itachi comes from a world of ninjas with its own set of values and traditions, while the Harry Potter universe has its own magical culture. Writers often explore how Itachi adapts to this new world and how the magical characters react to his presence.
Itachi is also a very mysterious character. When he's placed in different settings through crossovers, it opens up a whole new world of possibilities. For example, in a crossover with a post - apocalyptic world, his survival skills and combat expertise would be put to the test in a completely different way than in the Naruto world. This contrast is what attracts many readers.