Often, Harry catches Pettigrew by using his invisibility cloak. He sneaks up on Pettigrew and then uses a stunning spell. It's a simple yet effective method that is often used in fanfictions as it plays on Harry's resourcefulness.
One good 'Harry Capture Pettigrew' fanfiction could be 'The Capture at Hogwarts'. In this fic, Harry uses his quick thinking and newfound magical abilities to outwit Pettigrew. It shows an exciting chase through the castle corridors.
One possible consequence could be that he is immediately sent to Azkaban. Since he's a known traitor, the wizarding world would want to punish him severely for his crimes, which include betraying the Potters and framing Sirius Black.
Definitely Hermione and Ron. Hermione would use her intelligence to analyze the situation and come up with a plan. Ron would be the more impulsive one, ready to jump into action. Sirius Black could also be involved. Since he has a history with Pettigrew, he might have some insights into Pettigrew's actions and be able to help in the search for Harry. Also, the Weasley family in general might get involved as they are close to Harry.
Yes, there might be such fanfictions out there. Fanfiction writers often explore alternative storylines, and the idea of Pettigrew turning on Voldemort and killing him is an interesting and unexpected twist. It could involve Pettigrew having a change of heart due to some complex reasons, like realizing the true evil of Voldemort's ways or having a personal vendetta against him that overrides his loyalty.
Harry might become more confident. Capturing Pettigrew on his own or with his friends shows his growth as a wizard. He's no longer just the boy who survived Voldemort's attack but a capable hero who can bring a criminal to justice.
Well, it's hard to say exactly. The story could have Pettigrew trying to control Nagini for his own purposes or perhaps getting caught up in her evil plans without realizing it.
One common theme is redemption. Many fanfictions explore the idea of Peter Pettigrew seeking redemption for his actions. Since he was a traitor to the Potters, some stories show him trying to make up for it, often in relation to Harry.
In some 'Harry Kidnapped by Pettigrew' fanfictions, one interesting plot development could be Harry's struggle to escape. He might use his wits and the little magic he can muster in captivity. For example, he could try to communicate with his friends through magical means that Pettigrew doesn't suspect. Another aspect could be Pettigrew's motives. Maybe he's being blackmailed by some dark forces to kidnap Harry, which adds a layer of complexity to the story.
There are fanfictions that explore Peter Pettigrew's early days at Hogwarts. Maybe he was once a more innocent boy who got influenced by the wrong crowd. For example, a story could show how he first met James, Sirius and Remus and how his insecurities led him down the path of eventually becoming a Death Eater.
One possible plot twist could be that Pettigrew reveals some long - hidden secrets about the wizarding world. For example, he might know about a powerful magic item that was lost years ago and its location is somehow related to Hogwarts. This could lead Harry and his friends on a new adventure within the school grounds.