There could be. Fanfiction writers often take existing characters and put them in all sorts of situations. Loki, being a complex and popular character, and the Chitauri being a menacing force in the Marvel universe, might be the subjects of such a story. But it may not be easy to find, as it depends on the specific fanfiction platforms and how they categorize and tag their works.
One way Harry could defeat the Chitauri is by using his knowledge of magical creatures. He might find a way to use a spell that affects the Chitauri in a similar way to how he would deal with a dark magical creature. For instance, if there's a spell that can paralyze a creature, he could modify it to work on the Chitauri. Also, his ability to communicate with magical beings might come in handy. Maybe he could find a way to communicate with some sort of alien magic (if it exists in the fanfic) and use it against the Chitauri. Another aspect is his friendship with his Hogwarts comrades. He could call on them for help, and together they could use combined spells to overpower the Chitauri forces.
In a fanfic where Harry fights the Chitauri, he might use his magic in unexpected ways. For example, he could use spells like 'Expelliarmus' to disarm the Chitauri weapons. His ability to apparate could also give him an advantage in dodging their attacks. Maybe he would team up with some of the Avengers as well, sharing his magical knowledge with them.
Well, I haven't actually read this specific fanfiction, but generally speaking, it might involve Harry using his magic skills to combat the Chitauri. Maybe he'd use spells like Expelliarmus to disarm them or Protego to shield himself from their attacks. He could also team up with some of his wizard friends to take on the Chitauri threat.
The plot could start with Loki being stranded on a planet occupied by the Chitauri. They recognize him as the one who once led them but now see him as a weakened figure. So, they begin to use him for their cruel experiments. They could be trying to extract his Frost Giant powers or something similar. As the story progresses, Loki has to find a way to escape while dealing with the continuous abuse from the Chitauri, and maybe he even forms an unexpected alliance with some of his captors in order to survive.
Well, Spider Man would surely face a tough fight against the Chitauri. The Chitauri are a powerful alien force. But Spider Man has his own set of powers. He could use his spider - sense to anticipate their moves. He might also team up with other heroes in the fanfiction. Maybe Iron Man shows up and they combine their powers to defeat the Chitauri more effectively.
In this fanfiction, Iron Man could be one of his allies. Iron Man has the advanced technology and firepower to take on the Chitauri. They could combine their skills, with Spider Man's agility and Iron Man's powerful blasts. Another possible ally could be Captain America. His leadership and combat skills would be valuable in the fight against the Chitauri.
Hermione would be a very likely ally. She's smart and resourceful, and could help Harry figure out the best ways to use magic against the Chitauri. Ron might also be there, with his loyalty and fighting skills. Additionally, some of the more experienced wizards or witches from Hogwarts could potentially join in to help Harry.
The three Avengers could be Iron Man, Captain America and Thor. Iron Man could provide the high - tech gadgets and strategic thinking. Captain America would bring leadership and his combat skills. Thor with his godly powers like lightning and super strength would be a great addition. They would each have different interactions with Spiderman, for example, Iron Man might be like a mentor to him, while Thor could be more of a friendly rival in terms of strength.
Clint is often seen as the glue in Avengers fanfiction because he has connections to many of the characters. He's been on the team for a long time and has a unique relationship with each member. His loyalty and down - to - earth nature help hold the group together, even in tough times.