In the fanfiction, Peter Quill Parker might have some new powers or gadgets that give him the edge. He could have studied Thanos' fighting patterns and found a way to counter them. Also, his quick thinking and ability to improvise in tough situations would play a big role. He might even use his charm to get close to Thanos and then strike when he least expects it.
Peter Quill Parker could kill Thanos by first gathering all the information about Thanos' strengths and weaknesses. He may have found a way to disrupt Thanos' use of the Infinity Stones. Since Peter Quill Parker has his own set of experiences and skills from his adventures, he could combine them in a unique way. For example, his piloting skills could be used to create a diversion, and then he could use his combat skills to land a final, fatal blow.
One consequence could be that Peter Quill Parker becomes a hero. People all over the universe might look up to him. But he may also face some jealousy or envy from other powerful beings.
Thanos killed Peter Quill in a rather brutal way. He used his immense power and some sort of cosmic energy blast to take him down.
Peter would probably be scared at first. He's just a kid, after all, and being kidnapped by a powerful being like Thanos is terrifying. But he would also be defiant. He has a strong sense of responsibility, so he might try to find a way to escape on his own.
One possible plot could be that Peter Parker discovers a new power within himself that gives him the edge to take on Thanos. Maybe it's a power related to the Time Stone that he manages to manipulate in a way that Thanos can't counter. He could use this power to outwit Thanos in a battle and finally deliver the killing blow.
Peter could use his agility. Since he's super - agile, he can dodge Thanos' attacks easily. Then, when Thanos is off - guard, Peter can strike. For instance, he can web up Thanos' hands so he can't use the Infinity Gauntlet properly.
In a Thanos and Peter Parker fanfiction, it could be set in an alternate universe where Thanos has already won. Peter Parker is one of the few remaining heroes. He has to go undercover and try to find a way to reverse what Thanos has done. Peter uses his street - smart skills from Queens to blend in among the survivors and slowly gather information about Thanos' weaknesses. He might even form an unlikely alliance with some of Thanos' minions who have second thoughts about their master's actions.
There might be a fanfiction where Peter Parker accidentally gets transported to the Guardians of the Galaxy's universe. Peter Quill then has to help him get back home while they deal with some intergalactic threats along the way. This could lead to some really fun interactions as they learn about each other's worlds.
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.
Peter Parker is a science - minded individual, always looking for ways to use his intellect to solve problems. Peter Quill, while not lacking in intelligence, is more about gut instincts and his ability to improvise in dangerous situations. This difference could cause some friction at first. But when it comes to protecting others, their personalities would mesh. Parker's selfless nature to protect the people of New York and Quill's determination to keep his crew and the galaxy safe would bring them together. They could learn from each other's approaches to handling difficult situations.
Peter's character could become more hardened. Killing Thanos, a powerful and feared villain, would weigh heavily on him. He might struggle with the moral implications of taking a life, even if it was to save the universe. This could lead to a more somber and introspective Peter.