What if an ancient artifact from the Assassin's Creed world is discovered at a military crime scene? This draws the attention of both the Assassin's and the NCIS. The Assassin wants to keep the artifact safe from Templar hands, while the NCIS is just trying to solve the crime. They end up having to collaborate, with the Assassin teaching the NCIS agents about the significance of the artifact in a world they never knew existed.
Maybe there's a hidden Templar plot that has ties to a military case the NCIS is investigating. An Assassin discovers this connection and has to work with the NCIS agents, who are initially skeptical of this person with such strange abilities and knowledge. They gradually learn to trust each other as they uncover the Templar conspiracy together.
A possible plot could involve a group of ponies accidentally traveling to the Assassin's Creed world. They would be out of place and have to adapt quickly. They might team up with an Assassin to stop a powerful enemy. The ponies could use their unique magical abilities, like Rainbow Dash's speed or Fluttershy's ability to communicate with animals, to help the Assassin in their quest. And in return, the Assassin could teach the ponies about their history and fighting techniques.
A great Assassin's Creed crossover fanfiction idea is to cross it with 'Game of Thrones'. Picture an Assassin in Westeros, trying to navigate the complex web of political intrigue and assassination plots that are already rife in that world. They could be hired by different houses to carry out assassinations or be on a mission to uncover some dark secrets. Another interesting one could be a crossover with 'Cyberpunk 2077'. An Assassin in a high - tech future world, using their traditional skills along with new - age technology to take out targets in the neon - lit streets of Night City.
How about a crossover with the Star Wars galaxy? The Assassins could find themselves in a far - off planet in the Star Wars universe. They might get involved in the fight between the Jedi and the Sith, using their stealth and combat skills in a whole new environment filled with blasters, lightsabers and strange alien species.
One idea could be a crossover with Pirates of the Caribbean. The Assassin could team up with Jack Sparrow to find a hidden treasure that is also related to an ancient Piece of Eden. They'd face challenges like sea monsters and rival pirates.
For an Assassin's Creed crossover fanfic, consider a crossover with the Legend of Zelda series. The Assassins could explore the vast lands of Hyrule, facing off against Ganon's minions. They could learn some of the unique abilities and use the weapons in the Zelda world. Also, a crossover with the Pokemon world would be interesting. The Assassins might be on a quest to stop an evil organization that is misusing Pokemon for their own dark purposes, and they would have to catch and train Pokemon to help them in their journey.
One idea could be a crossover with the Lord of the Rings universe. The Assassins could be sneaking around Middle - earth, using their skills to navigate the dangerous terrains and perhaps even facing off against the forces of Sauron. Another idea is a crossover with the Harry Potter world. Imagine an Assassin infiltrating Hogwarts, using their hidden blade to protect the wizarding world from dark forces that the wizards might not be able to handle with just magic.
Another interesting concept could be a fusion of the Hidden Leaf Village and an Assassin's Creed Brotherhood. The ninjas could adopt some of the assassin's stealth and parkour abilities, and together they could fight a common enemy that threatens both their worlds.
Well, characters like Altair could be very stoic and mysterious when interacting with the NCIS agents. He might not trust them at first due to his own experiences in the Assassin's Creed world. The NCIS agents, on the other hand, would be very curious and probably a bit suspicious of him. For example, Gibbs might try to interrogate Altair in his own no - nonsense way, but Altair would be unfazed.
First, you need to decide on the main characters from both universes that will be involved. Then, think about the setting. Will it be mostly in Equestria or in the Assassin's Creed world? For example, if it's in Equestria, how will the Assassin's Creed elements fit in? Maybe there are secret Assassin guilds hidden among the ponies. Next, create a conflict that requires both the ponies' magic and the Assassins' skills to solve. It could be something like a dark magic that is threatening both worlds.
One idea could be that the NCIS team is investigating a series of strange murders that seem to have a supernatural element. They end up calling in the Winchesters from Supernatural for help. The two groups initially clash due to their different methods but eventually learn from each other and solve the case together.