One possible plot could be that the UNSC discovers a derelict Xenomorph-infested ship while on a routine exploration mission in Halo space. The Spartan soldiers have to fight off the Xenomorphs while also trying to figure out how they got there and if there's a connection to the Forerunners. Maybe the Xenomorphs are being used as some sort of biological weapon by an unknown faction.
In a fanfic, the Halo characters would interact with Xenomorphs in various ways. The Spartans, being super - soldiers, would be the front line against the Xenomorphs. They would study the Xenomorphs' movements and attack patterns. The Covenant races would have different reactions. The Jackals might try to snipe at the Xenomorphs from a distance, while the Hunters would use their brute strength. But overall, it would be a chaotic and dangerous interaction as the Xenomorphs' acid blood and stealthy attacks would pose a great threat to all the Halo characters.
Well, it's interesting because it allows for new character interactions. Imagine a Spartan from Halo teaming up with Ruby from RWBY. Their different skills and personalities would make for an engaging story. Also, the contrast between the two universes' aesthetics, like the gritty, mechanical look of Halo and the more colorful, anime - inspired RWBY, adds to the appeal. Fans of both can see how their favorite elements mesh together, whether it's the Covenant vs the Grimm or the Spartans using their advanced weaponry in the RWBY world.
A unique take on the crossover concept. For example, if it combines the dark, gritty atmosphere of Doom with the epic sci - fi world of Halo in a creative way. Maybe it has the Doomguy in the Halo universe facing off against Covenant forces, that would be really cool.
In such a fanfiction, Naruto might create Xenomorphs through some kind of powerful jutsu. Maybe he accidentally combines his chakra with some unknown and dangerous genetic material during an experiment or a battle, which then mutates and evolves into the Xenomorphs.
These fanfics can also expand the Halo universe in ways that the official games or media might not have time for. For instance, they can delve deeper into the backstories of Master Chief and Kelly, and how those might influence their relationship. By doing so, it keeps the fandom engaged and interested. Fans can discuss and share their favorite fanfics, which builds a sense of community within the Halo fandom.
Well, one possible plot could be that Naruto somehow stumbles upon a portal or a hidden area in the Naruto world where Xenomorphs exist. Maybe Orochimaru was doing some forbidden experiments and accidentally opened a gateway to their dimension. Naruto, being the curious and brave ninja he is, decides to explore. He then has to use his ninja skills like his shadow clones and rasengan to fend off the Xenomorphs. He might also try to find a way to close the gateway to prevent the Xenomorphs from spreading across the ninja world.
One common theme is cultural exchange. Since humans and sangheili have very different cultures in the Halo universe, fanfics often explore how they learn about each other's values, traditions, and ways of life. For example, in many stories, the human character might be introduced to the sangheili's strict code of honor.
One interesting 'halo sangheili x human fanfic' could be 'Alliance of Species'. It focuses on how a human and a sangheili overcome their initial differences and form an unlikely alliance in the face of a common enemy. The story delves into their cultural clashes and how they gradually learn to respect each other's ways.
One interesting crossover could be Master Chief meeting Iron Man. They are both iconic in their own universes. Master Chief with his Spartan strength and combat skills, and Iron Man with his high - tech suits. They could team up to face a common enemy that threatens both the Halo and Marvel universes, like an interdimensional threat that is after the advanced technology in both worlds.