Some fanfictions could be crossovers. Picture a scenario where the Avengers from the Infinity Wars team up with characters from other Marvel universes, like the X - Men. They could combine their powers and strategies to face the threat of Thanos in a completely new and exciting way.
First, study the characters. Know their personalities, powers, and relationships. For instance, Tony Stark's intelligence and sarcasm are key aspects. Then, think of a unique plot. It could be something that changes the outcome of a major battle.
One great place to start is 'The New Jedi Order' series which features Jaina and Jacen prominently. It has a lot of in - depth character development for both of them. Their relationship as siblings and their growth as Jedi are well - explored in this series.
One idea could be that in the fanfiction, instead of Thanos getting all the Infinity Stones, the Avengers manage to steal some of them first. They could then use the power of the stones they have to create alternate versions of themselves to fight on different fronts against Thanos' forces.
A character from a long - forgotten Asgardian legend could show up. This character could have powers that are related to the Infinity Stones in some way, like being able to sense when they are being misused. They could join the Avengers in their fight against Thanos.
One great 'Avengers and Spider - Man fanfiction' is 'The Friendly Neighborhood Avenger'. It combines Spider - Man's street - level heroics with the grandeur of the Avengers. It has an interesting plot where Spider - Man has to teach the Avengers some of his unique ways of dealing with small - scale threats while also learning from them about handling large - scale disasters.
There's also 'Spiderman's Avengers Adventure'. This fanfic delves into what would happen if Spiderman had to lead the Avengers in a crisis situation. It's full of character development, especially for Spiderman as he steps up to the plate. The story has a great balance between his quippy nature and the seriousness of the situation.
I really like the fanfiction 'Incredible Avengers Alliance'. It focuses on the relationships between the characters. For example, it shows how Mr. Incredible and Captain America bond over their leadership qualities. It also has some amazing action scenes where the combined forces of both groups take on a huge threat.
There are many great Hiccup and Mala fanfictions out there. Some focus on their adventures together in a new land, where they combine their unique skills. For example, one story might have them using Hiccup's dragon - riding abilities and Mala's knowledge of her own tribe's secrets to overcome a common enemy.
Some Merlin assassin fanfictions also incorporate magic in unique ways. For instance, 'The Magic - Assassin Link' shows Merlin using his assassin skills in tandem with his magic. He can use his magic to enhance his stealth or to create distractions while on his assassin missions. It's really fascinating to see how the two aspects of his character are intertwined in these stories.
Some fanfictions focus on an alternate universe where Khan teams up with the Enterprise crew instead of being their enemy. This could lead to interesting adventures and character developments as they work together to face new threats.