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.
Another common plot element is the interaction between the vampires and the different races in Middle - earth. Some vampires might try to form alliances with the elves, who are also long - lived and have their own magic. But the elves would be very suspicious of them. And when it comes to the hobbits, the vampires might see them as easy prey at first, but then realize their importance in the overall fight against Sauron.
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.
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.
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.
One interesting 'Lord of the Rings crossover vampire fanfic' could be 'The Blood - Ring Alliance'. In this fic, the vampires are from a different realm and find themselves in Middle - earth during the events of 'Lord of the Rings'. They initially try to stay out of the main conflict but end up getting involved in unexpected ways. It has some great character development for both the LOTR characters and the vampires.
To write a good vampire Lord of the Rings crossover fanfiction, you need to focus on character development. If you're introducing a vampire lord, make him a complex character. Give him motives that are more than just 'I want to rule the world'. Maybe he has a tragic past that led him to his current state. Also, make sure the language you use fits the tone of both worlds. The Lord of the Rings has a very specific, almost archaic style of speaking in places, and your vampire characters should also have a voice that is consistent with their nature. And don't forget about the pacing. You don't want to rush the story, especially when it comes to the big moments like battles or revelations about the ring.
Another theme might be isolation. As a vampire in a world that mostly consists of non - vampires, Aragorn would probably face a great deal of ostracism. This could lead to a sense of loneliness and a search for his place in the world, much like his character's journey in the original Lord of the Rings but with a very different set of circumstances.
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.
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.
The plot of Lord of the Rings 1 was that Frodo and his friends experienced many adventures and challenges in the Hobbit journey, including fighting with the Dwarf Golden Boots and going to Middle-earth to find and destroy the Lord of the Rings. During the journey, they made many friends, including Birbo, Gandalf, Legolas, and the dwarf Baggins. In the end, they successfully destroyed the Lord of the Rings, ending the War of the Rings in Middle-earth and protecting the people of Middle-earth.
The main plot often revolves around the fight against the forces of evil in Middle - earth. Players take on roles and engage in quests to prevent the spread of Sauron's influence, protect the free peoples, and safeguard the lands from various threats like orcs, trolls and dark wizards.