If the SI has the power of telepathy, it can greatly affect the Avengers' dynamics. They could read the minds of the Avengers, which might lead to some initial mistrust. However, if used properly, it could also enhance communication during battles. For example, they could quickly convey the enemy's plans to the rest of the team. Another example is if the SI has the power of flight and super speed. This could change the way the Avengers approach battles, as the SI could be used for quick reconnaissance or to quickly transport team members to different locations. It could also make some members a bit jealous at first, but over time, they would learn to utilize this new asset.
I really like 'Si oc avengers fanfiction' where the OC has a unique power. For example, there's one where the OC can control time in a very different way than Doctor Strange. It adds a whole new layer of complexity to the Avengers' adventures.
Secondly, make sure your story fits within the Avengers' universe. Understand the existing characters' personalities and relationships. Don't make Captain America act completely out of character. Also, include lots of action and adventure scenes that are typical of the Avengers.
One interesting storyline could be where the SI (Self - Insert) character has the power to manipulate time and uses it to prevent major disasters in the Avengers' world. For example, they could stop Loki from getting hold of the Tesseract in the first place. Another could be a story where the SI with unique powers teams up with Thor to explore other realms and discovers a new threat that they have to bring back to the Avengers to deal with. And there could also be a plot where the SI has the power of mind control and has to struggle with the moral implications of using it, especially when dealing with the Avengers and their enemies.
One of the great crossovers could be a story where Spiderman's quick - wittedness helps the Avengers in a complex battle strategy. Maybe he uses his webs to create a unique trap for a powerful enemy that the Avengers alone couldn't handle. Another cool crossover could be a situation where Spiderman has to teach some of the younger Avengers his acrobatic fighting style.
One popular trope is the 'fish - out - of - water' story. Your OC, coming from a normal life, suddenly finds themselves in the middle of the superhero world. Another is the 'power - up' trope, where your OC discovers new powers or abilities during the course of the story. And the 'team - up' trope is also common, where your OC teams up with Spiderman and the Avengers to fight a common enemy.
When writing this kind of fanfiction, start by researching the existing Spiderman and Avengers universes thoroughly. Know the powers, personalities, and story arcs of the main characters. For your OC, decide on their powers carefully. If they have super strength, think about how it compares to the Hulk's. Then, plot out a story that has a clear beginning, middle, and end. In the beginning, introduce your OC and their situation. In the middle, build up the conflict, whether it's against a new villain or an internal struggle within the group. At the end, resolve the conflict in a satisfying way.
She'd probably have a special bond with some of the original Avengers. For example, Steve Rogers might see her as a reminder of Tony and take her under his wing. He could teach her about honor and self - sacrifice. On the other hand, Thor might be like an over - protective uncle, always ready to use his hammer to protect her. And Natasha could train her in combat and espionage skills.
For Spiderman, his insecurities could be explored more deeply. Maybe in a fanfiction, he constantly doubts if he's really worthy to be among the Avengers. With the Avengers, Thor's sense of humor could be developed further. He could make more jokes about Earth customs in relation to Spiderman's normal life as Peter Parker.
The Qingchuan novel "Fujin in Danger" tells the story of the heroine Bai Linger crossing over to the Qing Dynasty to paint for Fujin in Yuanmingyuan and getting to know Si Si (the male protagonist). In the story, Si Si was a talented and intelligent Qing Dynasty emperor, and Bai Ling 'er was his personal palace maid. The two of them had gone through many crises and joys together in Yuanmingyuan, and finally fell in love with each other and walked towards happiness together. In addition, the story also involved the fate of other characters and the changes in the political situation of the Qing Dynasty. The novel was full of twists and turns, and its thrilling and beautiful writing style was deeply loved by readers.