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.
Often, other members of the Bat - family like Batgirl might be part of 'batman tickle fanfiction'. She could be in a scenario where she tries to get Batman to lighten up by tickling him. And villains like Two - Face could also be involved, using tickling in a strange way to try and gain an advantage over Batman during a confrontation.
In some 'batman tickle fanfiction', Alfred might be involved. He has a close relationship with Batman and could potentially be in a situation where he tickles Batman as a form of comfort or to cheer him up. Additionally, Catwoman could be a character in these fanfictions. Her flirty relationship with Batman could lead to some ticklish encounters.
Obviously, the main characters are the Powerpuff Girls themselves - Blossom, Bubbles, and Buttercup. They are the central focus as they are the ones usually getting tickled or doing the tickling in the fanfiction. Sometimes, villains like Mojo Jojo or Him might also be involved, either as the instigators of the tickle situations or as unexpected victims.
Sometimes other villains from the Batman Beyond universe might make appearances in the fanfiction related to Blight. They could either team up with Blight, adding more challenges for Batman, or they could be involved in some sort of power struggle within the criminal underworld that is affected by Blight's actions.
Sweetie Belle is obviously one of the main characters. Often, her friends like Scootaloo and Apple Bloom might also be main characters, as they are usually involved in various adventures and interactions with Sweetie Belle in the fanfiction world, including tickle - related ones.
The Joker is often involved. He loves to push Batman to the brink of death in many fanfictions. His chaotic and unpredictable nature means he could come up with all sorts of devious plans to almost kill Batman, like luring him into a death - trap filled with his signature laughing gas. Another character is Ra's al Ghul. Since he has his own goals for Gotham and sees Batman as an obstacle at times, he might try to eliminate him in a more elaborate and long - planned way that leaves Batman on the verge of death.
Alfred is also quite common in these fanfictions. He serves as a connection between Batman and the younger characters. He might be the one who takes care of the young fan when they get caught up in Batman's business. And sometimes, Robin, especially a younger version of Robin, can be a key character, as he's closer in age to the young fan in the story.
Well, Bowser is obviously a main character. He's the one getting tickled most of the time. Mario or Luigi might also be characters in these fanfics, especially if the story involves them using tickling as a strategy against Bowser.
Definitely Dawn. And then there are her traveling companions. May, if she were to make an appearance in a crossover type of fanfiction, could be involved. May might be curious about Dawn's experiences with tickling in the Sinnoh region. Also, Nurse Joy could potentially be part of the story. Maybe Dawn gets tickled by a Pokemon while at the Pokemon Center and Nurse Joy has to deal with the resulting chaos and laughter.
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.
Often, the main characters are Naruto and his friends. Naruto, as the protagonist, is naturally drawn to the mystery of the egg. His friends like Shikamaru, who is intelligent and can strategize about how to deal with the situation regarding the egg, and Choji, who might provide some physical protection if needed. Hinata could also be involved, perhaps having a special connection to the egg because of her Byakugan. And then there are the villains, like the members of the Sound Five, who might want to get their hands on the egg for their own evil purposes.
Well, Severus Snape is obviously the central character. But often, other characters from the Harry Potter series are also involved. Harry Potter himself is frequently present as his relationship with Snape is a key part of the original story. Hermione Granger and Ron Weasley may also show up, as they are important in the wizarding world and their interactions with Snape can be explored in different ways in fanfiction.