Hinata might show up as well. Her relationship with Naruto can develop in new ways in different dimensions. For instance, in a dimension where Naruto is in a more dangerous situation, Hinata's love and support could be a key factor in his journey.
Jiraiya often appears. Since he was Naruto's mentor, when Naruto travels back in time, Jiraiya can play an important role. He could be the one to initially believe Naruto's story about coming from the future. Another common character is Kakashi. Kakashi was Naruto's teacher and his presence in the time - travel story can add a lot of interesting interactions, like Naruto showing Kakashi things he wouldn't know yet in that timeline.
Sasuke is often featured alongside Naruto in these fanfictions. Their rivalry and friendship make for interesting storylines when combined with the power of the Final Flash. For example, Sasuke could be in a situation where he needs Naruto's Final Flash to help him in a fight against a common enemy.
One great 'Dimension Travel Naruto Fanfiction' is 'A New Path in Another World'. In this fic, Naruto gets transported to a different dimension where the ninja world has some unique and strange rules. It's really interesting to see how he adapts his skills to this new environment.
One possible fanfiction could be about Naruko traveling to different dimensions in the Naruto universe and meeting alternate versions of her friends and enemies. She might learn new jutsus or gain unique powers from these encounters.
Naruto himself is obviously very popular. Since it's his name in the fanfiction title, he's often the main character traveling through dimensions. Sasuke is also common, as his complex relationship with Naruto can be explored in different dimensions. Kakashi is another popular choice, his skills and wisdom can play interesting roles in different dimension settings.
Obviously Naruto himself is a common character. Sasuke might also be there, perhaps as a rival or an ally in this devil - infused Naruto's story. Kakashi could be around too, as a mentor figure trying to guide Naruto through his new, darker path.
Well, in some Naruto fanfictions about dimension travel, Naruto might end up in a dimension where the tailed beasts are the dominant species. He then has to figure out how to communicate with them and maybe even form alliances. Or he could travel to a dimension where there is no chakra, and he has to learn new forms of power to survive and find his way back.
Doctor Strange often appears in Spiderman dimension travel fanfiction. Since he is an expert in the mystic arts and has knowledge about different dimensions, he can be a guide or an accidental cause of Spiderman's dimension travel. Another common character is Venom. In different dimensions, Venom can have different forms and motives, which makes for an interesting story when combined with Spiderman's dimension - hopping adventures.
One common theme is self - discovery. As they travel through different dimensions, both Naruto and Fem Sasuke often learn new things about themselves. For example, they might discover hidden powers or aspects of their personalities that they didn't know before.
One great 'Naruto Dimension Travel Crossover Fanfiction' is 'Naruto in the Marvel Universe'. In this story, Naruto is transported to the Marvel world. He brings his unique ninja skills and chakra system, which creates interesting interactions with the superheroes there. His ability to use shadow clones, for example, surprises many characters. Another good one is 'Naruto and the World of Harry Potter'. Here, Naruto enters the magical world of Hogwarts. His combat skills are quite different from magic, yet he finds ways to adapt and even teaches some of the students about his ninja way.