Vlad Masters is another character that often shows up in fanfiction. His complex relationship with Danny can be explored in many different ways in the multiverse. He could be a hero in one universe, trying to atone for his past mistakes, or an even more devious villain in another, with different motives and backstories compared to the original series.
Sam and Tucker are also quite popular. In the multiverse fanfiction, they can have different roles. Maybe in one story, Sam has some hidden ghost powers of her own and becomes a key player in a multiverse adventure. Tucker could be a tech - genius in one universe and a powerful magician in another, adding new dimensions to their characters.
Obviously, Danny and Dan themselves are very popular. Danny as the main hero and Dan as his dark and complex counterpart are central to many stories. Jazz, Danny's sister, is also popular as she can provide a different perspective and often gets involved in Danny's ghost - fighting adventures in fanfiction.
Danny himself is often a very popular character. After all, he's the main character of the original series, so in fanfiction, his adventures are usually central. Sam and Tucker are also quite popular as they are Danny's closest friends. Their relationships with Danny and how they support him in different situations are often explored in fanfiction.
Wolverine is also a very popular character in these fanfictions. His tough - guy attitude and his claws and healing factor are really cool elements. Fans love to see how he reacts to Danny's world of ghosts and the different situations they get into together.
Obviously, Danny and his mom are very popular. Danny because he is the main character with his cool ghost powers and his dual life. His mom is popular because she is often portrayed as a strong and loving figure. She might be the one who has to deal with the chaos Danny's powers bring into their family life.
Sakura from Naruto might also be popular in these fanfictions. She could potentially have some interesting interactions with Danny, like comparing her medical ninjutsu with Danny's knowledge of ectoplasm - based healing (if there is such a thing in the crossover). Also, Tucker from Danny Phantom might be a popular character as he could be the tech - savvy guy in the Naruto world, coming up with new inventions using a combination of Naruto - world materials and his own tech knowledge.
Danny himself is obviously one of the most popular characters. Since the fanfiction is about his college years, readers are interested in seeing how he has grown and how he will handle new challenges. Tucker is also popular as he is Danny's best friend and can provide some tech - savvy support. Sam is another beloved character as she has always been by Danny's side and her strong - willed personality often adds interesting dynamics to the stories.
Another popular pairing is Danny with Deadpool. Deadpool's crazy antics and Danny's ghostly nature would make for a hilarious combination. Deadpool might be constantly trying to make Danny break his cool, calm ghostly demeanor. And Danny would have to deal with Deadpool's fourth - wall - breaking tendencies.
The Box Ghost is quite popular in Danny Phantom fanfiction. He's often used as a comical relief character, but can also be made into a more menacing figure in some stories. Another popular one is Skulker. His hunting nature and advanced weaponry make him an interesting character to write about. He can be a formidable foe for Danny or even an unexpected ally in certain situations.
Sam and Tucker are also quite popular. They often play important roles in helping Danny deal with his TG (transformation - related) situations. Sam might use her goth knowledge or her strong will to assist Danny, while Tucker uses his tech - savvy skills.
Danny Phantom himself is obviously a very popular character in these fanfictions. He is the main character and his dual identity as a human and a ghost brings a lot of interesting elements to the racing scenarios. His ability to transform and use his ghost powers makes for exciting race moments.