Well, in a Sasuke crossover with Lord of the Rings fanfic, Sasuke could be a mysterious figure that arrives in Middle - earth. He has his own motives which initially seem unclear to the inhabitants. As the story progresses, he discovers that the dark forces in Middle - earth are similar to the ones he has faced in his own world. So, he uses his knowledge and skills to aid the good side. He might even teach some of the characters in Middle - earth a thing or two about combat and self - defense.
One possible plot could be Sasuke finding himself in Middle - earth. He might be mistaken for an elf at first due to his appearance. He could then get involved in the fight against Sauron. Maybe he uses his Sharingan to detect the presence of orcs or other dark forces. His ninja skills would be quite useful in battles, like his speed and ability to move stealthily.
The plot could involve Sasuke being drawn to the power of the One Ring. He might initially be tempted by it, thinking it could give him more power to achieve his goals. But then, realizing the corrupting nature of the ring, he decides to help destroy it. He could team up with Aragorn and the Fellowship, using his unique abilities to protect them on their journey.
A really interesting plot could be that Naruto is mistaken for a powerful wizard. He gets involved in the battle against Sauron. His Rasengan could be a powerful weapon against the orcs and other dark creatures. Also, his friendship with the characters in Middle - earth would grow as they see his loyalty and determination, much like how his friends in the Naruto world value him.
Well, often there's the element of the vampires being outsiders in Middle - earth. They usually have their own powers and motives that are different from the normal LOTR characters. For example, they might be interested in the power of the One Ring for their own reasons, like using it to enhance their vampiric abilities or gain more control over other beings.
One possible plot could be that Eragon somehow gets transported to Middle - earth. He could meet Aragorn and learn from his leadership skills. Maybe they would join forces to fight a common enemy like a new breed of dark creatures created by a combination of Sauron's magic and the dark forces from Eragon's world.
Sasuke's Sharingan would be a great asset. It could help him see in the dark, which would be useful in places like Moria. His ability to copy other people's fighting styles could also come in handy when facing different foes in Middle - earth. And his speed and agility would make him a formidable opponent in battles against orcs or other evil creatures.
One idea could be that the Night King from 'Game of Thrones' somehow travels to Middle - earth. There, he might team up with the forces of Sauron, creating a double threat to the free peoples. The characters from both universes would have to find a way to work together, like Arya Stark using her skills to infiltrate Sauron's ranks while Legolas and Jon Snow lead the combined forces in battle.
Well, in 'lord of the rings crossover fanfic', the idea of mixing different species from other fictional works can be really engaging. For example, a crossover with the world of 'Game of Thrones'. The political intrigue of the Seven Kingdoms combined with the epic quest of the One Ring. Characters like Tyrion Lannister could meet Frodo and have some really interesting exchanges about power and survival. Or a crossover with the 'Star Wars' universe. The Force could interact with the magic in Middle - earth in a very unique way, and Jedi could potentially have their own take on the One Ring's power.
A new Lord of the Rings story could center around a young hobbit who, while exploring an old, forgotten part of the Shire, stumbles upon a magical object. This object draws the attention of dark forces, and the young hobbit must set out on a journey to find out how to destroy it. Along the journey, he meets characters both old and new, and together they face many perils.
The plot could involve Naruto characters in the Middle - earth. Maybe Naruto with his shadow clone jutsu could be used in battles against orcs. For example, he could send a horde of clones to confuse the enemy. And Sasuke with his Sharingan might be able to detect the hidden threats in the dark forests of Middle - earth. It would be a really interesting mix of the two universes' combat styles and magic systems.
Robin could be a thief - like character. He could steal important items from the enemy, just like Bilbo stole the One Ring from Gollum. His small size and agility would make him good at sneaking around, and he could provide valuable information to the Fellowship by eavesdropping on the enemy's conversations.
One idea could be a vampire character who is drawn to the power of the One Ring. Maybe this vampire, being a creature of the night and often associated with darkness and power -hunger, sees the ring as a means to gain ultimate power in Middle - earth. For characters, you could have a half - vampire, half - elf who struggles with their dual nature while being caught in the events related to the ring.