In a 'Peter Quill returns to earth fanfiction', he could return to Earth to seek refuge. After facing some great danger in space, he thinks Earth is the safest place for him. Once on Earth, he has to adapt to the changes that have occurred since he left. He might also find that his presence on Earth attracts unwanted attention from both Earth - based and extraterrestrial forces, and he has to use his skills and wits to deal with these threats while also trying to figure out his place on his home planet again.
One possible storyline could be that Peter Quill returns to Earth to find his long - lost family. Maybe he discovers a new side of his heritage that he never knew before. Another could be that he comes back to Earth to share the knowledge and technology he has gained from his space adventures, which could have a huge impact on Earth's future.
He might meet his old friends from before he left Earth. People he used to hang out with, like schoolmates or neighbors. They could be shocked to see him after all this time and how much he has changed.
Perhaps Peter returns to Narnia and finds that time has passed differently there. His old friends have aged much more than he expected, and there are new political tensions in the land. He then has to use his leadership skills from his previous time in Narnia to help resolve these issues and bring peace back to the kingdom.
A possible storyline is Kaine Parker getting accidentally transported to the Guardians' territory where Peter Quill is. Their clash of personalities, Kaine's more brooding nature against Peter's carefree space - faring attitude, could lead to some really engaging character - driven plots. They might start off as distrusting each other but then gradually form an alliance.
One possible plot could be that Peter Parker, while on a school trip or some scientific research in space (maybe with Stark tech), accidentally stumbles upon Peter Quill and the Guardians of the Galaxy. They initially have a bit of a misunderstanding as their ways of doing things are quite different. Parker is used to the more down - to - earth (literally) problems in New York, while Quill is dealing with intergalactic threats. But they soon realize they can learn from each other. Parker could teach Quill about the latest Earth - based technology, and Quill could show Parker the wonders of the galaxy.
The child in fanfiction could potentially have some sort of special power. Maybe it could inherit Peter's ability to hold an Infinity Stone (if we consider that as a latent power) and Gamora's enhanced physical abilities. It would be raised in a universe full of danger and wonder. It could befriend the other Guardians and learn from them. This child might also struggle with the legacy of its parents, having to live up to their great reputations while also carving out its own path in the galaxy.
It could be part of his personality. Peter Quill is often portrayed as a brash and confident character, and a loud voice might be a way to show that. He may be used to being the center of attention and uses his loud voice to assert himself.
One possible storyline could be that Peter feels he has to leave to protect MJ and their unborn child from his dangerous life as Spider - Man. He might think that his enemies will target them if he stays.
One possible storyline could be that Peter Park, with his spidey - sense, senses some sort of danger that is related to Wonder Woman's world. Maybe a new villain has emerged that has the ability to disrupt both the world of New York where Peter operates and the mythical world of Wonder Woman. They team up to fight this common enemy, with Peter using his agility and web - slinging skills, and Wonder Woman with her strength and lasso of truth.
One possible storyline could be that Jane grows up in Neverland and over time, she and Peter develop a deep emotional connection. As they face various adventures and challenges together, their feelings turn into love, leading to a kiss. Another could be that Peter, who has always been a bit of a free spirit, is suddenly intrigued by Jane's different way of thinking and they gradually fall for each other.
He might possess the power of energy manipulation. Given his connection to the Power Stone in the movies, fanfiction could expand on this. He could learn to harness and control different types of energy, not just the power of the stone. This would make him a formidable force in battles, able to create energy shields or blast his enemies with powerful energy beams.