Anakin Skywalker could be one of the main characters. Since he has such a complex journey on the Jedis path, if he were to cross over into another time or alternate Jedis path, it would be very interesting. He could interact with other Jedis, like Luke Skywalker, and they could compare their experiences and understanding of the force.
Mace Windu could be a great main character for such a fanfiction. His strict adherence to the Jedis code and his powerful connection to the force would make for an interesting crossover. He could cross paths with a Jedi from a future era who has a more relaxed view on the code. Their clash and subsequent understanding of each other could be a central part of the story as they both explore different aspects of the Jedis path.
Well, perhaps in a Jedis path crossover fanfiction, a Jedi who was thought to be lost in the dark side returns through a mysterious crossover. This Jedi has to re - learn the true Jedis path by interacting with modern - day Jedis. They could go on a journey together to discover a long - lost Jedi artifact that has the power to strengthen the Jedis path for all. Along the way, they face challenges from both the dark side and their own self - doubts.
Perhaps some of the more mysterious characters from the series could take the lead. For example, Isabel Kabra. Her devious nature could add a whole new layer of intrigue to the crossover fanfiction. She could be working with or against the other characters in unexpected ways, creating a lot of tension and interesting plot twists.
A group of scientists who were involved in creating the Indoraptor in the first place could be main characters. They might have to face the consequences of their creation when it crosses over into another world or situation. They would be trying to either control it or destroy it.
If it's a crossover with the DC universe, Batman could be the main character. He would use his detective skills and arsenal of gadgets to face the Deathclaw. His dark and brooding nature would make for an interesting contrast against the brute force of the Deathclaw.
Definitely Naruto himself. He's the main character of the Naruto series, so he has to be there. In a crossover with Attack on Titan, he could meet Eren. Naruto's determination and Eren's drive to protect his people could make for an interesting dynamic between them.
One interesting character to include could be Lord Zedd. He could be the cause of the broken path, trying to create chaos across all the Power Rangers' worlds. His devious plans and powerful minions would make for great obstacles for the Rangers. Another character could be the White Ranger from a different dimension, who has unique abilities that could help in fixing the broken path.
It could be a brave plumber who is used to dealing with normal toilets but is now faced with the skibidi toilets. He would use his plumbing skills in creative ways to combat them.
Well, if it's a crossover with the Transformers universe, Optimus Prime could be a main character dealing with the battle droids. He could try to teach them about honor in combat, which is very different from their programmed aggression.
Definitely, Cortana could be a main character in a 'halo anime crossover fanfiction'. If she were in the world of Code Geass, she could help Lelouch with his strategic plans, using her vast knowledge and intelligence. Another option is the Elites from Halo. They could be the main characters in a crossover with My Hero Academia. Their physical strength and warrior culture could be contrasted with the superheroes in that anime, and they could have some interesting interactions with the students at UA High.
If it's a crossover with the Harry Potter universe, Hagrid could be a main character. Hagrid loves all kinds of strange and dangerous creatures. He might see the Indominus Rex as a misunderstood beast and try to tame it, but quickly realize that this dinosaur is far more dangerous than any creature he's dealt with in the wizarding world.