Some fanfictions might include other characters like Luna Lovegood. Luna could be a sidekick to Hermione, providing her with unique insights or helping her in a difficult situation. For instance, Luna might know about a strange magical creature that holds the key to saving everyone from a magical plague.
Dumbledore might also be involved. He could be incapacitated in some way, and Hermione steps up in his absence to save everyone. Maybe Dumbledore is under a powerful curse, and Hermione has to find the antidote and also deal with the chaos that has ensued in Hogwarts without his leadership.
Obviously, Hermione is the central character. Harry and Ron are often also important. They might be in trouble and Hermione has to save them. For example, they could be captured by Death Eaters and Hermione devises a clever plan to rescue them.
Well, obviously Eric Cartman is a main character. Then there would be his friends like Stan, Kyle, and Kenny. But it could also involve other South Park residents like Mr. Garrison, Chef (if in the right continuity), and even the parents of the kids. Since it's 'x everyone', it can really include just about any character from the South Park universe.
Obviously, Harry and Hermione are the main characters. Harry is the one who undergoes the transformation into Hermione. Ron is also often involved as he is their close friend and his relationship with both Harry and Hermione is an important aspect. Dumbledore might also make an appearance as he is always aware of what's going on in Hogwarts and could play a role in either helping Harry deal with the transformation or in uncovering the cause of it.
Gray is another character. His ice - magic can complement Natsu's fire - magic. They might team up to fight enemies or overcome obstacles in the way of saving Fairy Tail. Sometimes they bicker while doing so, which adds some humor to the story.
Typically, Harry is one of the main ones. He has a knack for getting into and out of trouble with his pranks. Hermione might also be involved in some pranks in a more strategic way, using her vast knowledge of magic to create unique and elaborate pranks. And of course, the Weasley twins are almost always at the center of the most elaborate and chaotic pranks in the fanfiction.
Well, obviously Sakura is one of the main characters as the title implies she is the one saving everyone. There could also be the people she is saving. They might be her friends, family, or just random people in the fictional world she exists in.
Well, obviously the Beast and Belle are the main characters. The Beast is often portrayed as a complex character, with his own backstory of how he became cursed. Belle, on the other hand, is the damsel in distress in many cases, but also a strong - willed character who has her own charm and intelligence. Sometimes other characters from the original story like Lumière or Cogsworth might also make appearances, adding some comical relief or helping the Beast in his quest to save Belle.
Ron could be involved. He might be nearby when the situation occurs and try to help Harry in some way, like providing a distraction for Bellatrix. Neville could also be there. He's grown quite brave and might step in to assist Harry, perhaps by using his skills with Herbology to create some sort of plant - based defense against Bellatrix.
Obviously, Hermione Granger and the Weasley family members are the main characters. This includes Ron Weasley, who is Hermione's friend and often has a complex relationship with her in fanfiction. Then there are the other Weasley siblings like Fred, George, Ginny, etc. Each of them can bring their own unique personalities and storylines to the fanfiction.
In Gohan snaps fanfiction, Gohan is the main focus. However, antagonists can play a big role too. Characters like Cell or Frieza could be in the story, if it's set in an alternate universe or a what - if scenario. For example, if Frieza comes back and attacks his family again, that could be the reason for Gohan to snap. And then there are his friends who will support him, like Krillin and Tien.
Batman is obviously one of the main characters. He's the central figure around which the tickling scenarios revolve. Robin is also commonly involved, as his relationship with Batman allows for different types of interactions, including tickle - related ones. The Joker is another character that might show up, as he loves to play mind games with Batman and tickling could be part of his devious plans.