Well, a fanfiction involving Harry Potter, Dudley, and 'Cartoons Ninja' could be really interesting. Maybe it could be a story where Dudley somehow gets involved in the magical world of Harry Potter through a portal created by a 'Cartoons Ninja' character. The ninja could have some unique powers that interact with the magic in the Potterverse.
Sure. In the world of 'Harry Potter' fanfiction, the concept of Dudley as a wizard isn't unheard of. Some fanfictions might use this idea to show Dudley's redemption arc. He could start as the bully we know from the original books but then transform into a wizard and learn about the values of the wizarding community. It can also be a way to explore the Dursley family's relationship with magic in a different light, rather than just being Muggles who shun it.
Dudley is interesting because he was a bully in the original story. Fanfiction can explore his redemption arc. He has the potential to grow and change, which makes for great storytelling.
One idea could be a story where Dudley and Piers start to see Harry in a new light after he saves them from a magical threat in the Muggle world. They then become sort of secret allies to Harry, helping him out when he's in the Muggle neighborhood.
A lesser - known but really good one is 'Draco and Dudley's Unexpected Friendship'. This fanfic shows a more long - term development of their relationship. It starts with them meeting by chance in Diagon Alley. As the story progresses, they start to understand each other better. It's a heartwarming story that shows how even the most unlikely characters can form a bond.
In some fanfictions, Dudley could be the main character in an alternate universe. For example, what if Dudley was the one who received the Hogwarts letter instead of Harry? This would completely change the dynamics of the story, with Dudley having to navigate the wizarding world with his own set of values and prejudices.
One way is to give Dudley a moment of self - reflection. Maybe he overhears some cruel remarks about himself from other Muggles who are as narrow - minded as his parents. This makes him realize how wrong his family's treatment of Harry has been, and he starts to change. He could then begin to learn about the wizarding world from Harry in secret, slowly becoming more open - minded and kind.
Well, if Harry and Dudley became friends, it would drastically change the whole dynamic of the early Harry Potter story. For one, Harry might not have felt so alone at the Dursleys' place. Dudley could have protected Harry from Vernon's wrath. Also, they could have shared secrets about the wizarding world with Dudley being a Muggle. This new friendship might even have led to Dudley developing an understanding and acceptance of the magical world much earlier, and perhaps he could have been an ally to Harry in the fight against Voldemort, instead of a bully.
One common theme is redemption. Dudley has been a bully to Harry for a long time, so many fanfictions explore him seeking redemption for his past actions. Another theme is family. Despite their difficult relationship, they are family, and fanfictions often play with this idea, showing how they can come to terms with each other.
There might be a fanfiction where Dudley gets involved in a magical adventure accidentally. For example, he stumbles upon a magical object that was meant for Harry but now has drawn him into a dangerous yet exciting situation in the wizarding world. He has to learn to rely on his own courage and the help of some unlikely allies.