Well, perhaps the Thundercats come to the Naruto universe. Tygra is intrigued by the ninjutsu and starts learning from Kakashi. Meanwhile, Naruto is fascinated by the Thundercats' technology and their unique fighting styles. They find out that there is a threat in the Naruto world that is somehow related to the Thundercats' ancient enemy. So, they all join forces, with Naruto leading the charge with his Rasengan and the Thundercats using their various weapons and skills.
One possible plot could be that Naruto and his friends are somehow transported to the Thundercats' world. Naruto, with his never - give - up attitude, teams up with Lion - O to fight a common enemy, like Mumm - Ra who has formed an alliance with some rogue ninjas from Naruto's world. They could combine their powers, Naruto's chakra - based jutsus and Lion - O's Sword of Omens powers, to defeat the bad guys and save both their worlds.
One possible plot could be that the Thundercats are transported to the Naruto universe. They might be mistaken for powerful ninjas at first. Lion - O could end up learning some ninja techniques and share his sword - fighting skills with the ninjas. Cheetara could use her speed in the same way as some of the fast - moving ninjas in Naruto. And they could all team up to fight a common enemy, like a powerful rogue ninja who has some dark magic similar to the villains in the Thundercats' world.
One possible plot could be that Naruto and his friends are somehow transported to the Thundercats' world. Naruto, with his ninja skills, could team up with Lion - O to fight against a common enemy like Mumm - Ra. Naruto's Rasengan could be a powerful weapon against the dark magic in the Thundercats' realm.
In many 'thundercats crossover fanfic', the new storylines that emerge are really cool. When they cross over with something like the Guardians of the Galaxy, the Thundercats' sense of honor and the Guardians' more laid - back attitude create a contrast that leads to interesting adventures. Also, the way the fanfic writers combine the powers and abilities of both sets of characters is exciting.
I think Sasuke and Tygra would make a great pairing. Sasuke has his Sharingan and his complex personality, while Tygra is a strategic thinker with his own set of skills. They could have some intense battles together against common enemies, and also have deep conversations about power and purpose. Also, Kakashi and Panthro would be cool. Kakashi's vast knowledge of ninjutsu and Panthro's mechanical expertise could lead to some interesting exchanges and combined efforts in combat.
One possible plot could be that the Juubi somehow gets transported to the Naruto world during a strange rift in space - time. Naruto and his friends have to figure out how to deal with this powerful and chaotic entity. They might initially try to fight it, but then realize they need to find a way to seal it again, like they did with the other tailed beasts. This could lead to new alliances and power - ups for the characters as they struggle to protect their world.
A cool plot could be that the Sage of Six Paths in Naruto's world had a connection to Skyrim long ago. When Naruto unlocks some hidden power within himself, it accidentally triggers a link to Skyrim. Once in Skyrim, he discovers that his chakra is linked to the dragon shouts. He has to go on a quest to learn more about this connection. He meets the mages in the College of Winterhold, who are fascinated by his chakra abilities. Together, they try to figure out a way to use Naruto's power to stop a great evil that is threatening both Skyrim and, through the link, Naruto's own world.
One possible plot could be that the Avengers are somehow transported to the Naruto universe. They team up with Naruto and his friends to fight a common enemy like Kaguya who has somehow obtained the Infinity Stones. The Avengers' powers and technology would be a huge shock to the Naruto world, and they'd have to learn to combine their skills to succeed.
One possible plot could be that Naruto is transported to an alternate universe where he is suddenly declared an emperor. He has to deal with the politics and power struggles in this new world while also trying to find a way back home. He might use his ninja skills to gain allies and fight against those who oppose his newfound status.
A great plot for an 'antihero Naruto crossover fanfic' could be that the antihero is a time - traveler. He comes from a future where the Naruto world has been destroyed by an unknown force. He blames the ninja system and their use of chakra for this destruction. So, when he travels back in time, he starts to disrupt the normal flow of things in the Naruto world. He tries to prevent ninja from developing certain jutsu or forming alliances. However, as he does this, he catches the attention of Naruto and his friends. Naruto tries to reason with him and show him that there is good in the ninja world. In the end, the antihero has to decide whether to continue his vendetta or help Naruto save the future.
The plot of 'naruto and the 100 crossover fanfic' might center around a strange anomaly that transports Naruto to the universe of 'The 100'. Once there, he meets Clarke and the others. He starts to teach them some of his ninja techniques, like how to move stealthily or use chakra to enhance their physical abilities. In return, they teach him about their world's technology and survival skills. This exchange of skills could be crucial in their fight against the various factions vying for power in 'The 100' world.