One of the most popular characters to crossover with pillar men in fanfiction is probably Jotaro Kujo from 'JoJo's Bizarre Adventure'. Since both come from the same series universe originally, it creates an interesting dynamic. Another popular choice could be characters from 'Bleach', like Ichigo. His strong combat abilities and unique power would make for an exciting encounter with the pillar men. Also, characters from 'One Piece' such as Luffy might be popular. Luffy's carefree and adventurous nature would contrast greatly with the more menacing and ancient pillar men.
Naruto himself is often a popular choice to be paired with the Pillar Men. His positive attitude and strong will make for an interesting contrast and potential for character growth when interacting with the more menacing Pillar Men. Another popular character is Sasuke. His brooding nature and powerful abilities can create some intense storylines when combined with the Pillar Men.
Jean Grey is another one. Given her powerful telepathic and telekinetic abilities, she can be a central figure in crossovers. Fanfictions might explore her relationship with other powerful characters from different franchises and how her powers interact with theirs.
Agent J and Agent K are usually very popular. Their dynamic relationship has been a staple of the Men in Black series, and in fanfiction, writers often explore different aspects of their friendship and partnership. For example, they might write about their first mission together from a different perspective or how they deal with a personal crisis while on a mission.
Trudy Chacon can be a really interesting character in Avatar 2009 crossover fanfiction. She's a human who has a certain level of empathy for the Na'vi, and in crossovers, she could play a role in bringing different groups together. Another popular one is Norm Spellman. His scientific knowledge and his own journey in the Avatar world can be explored further in crossovers.
Canderous Ordo is popular too. His Mandalorian background gives him a unique edge. In crossovers, he could bring the tough and honor - bound Mandalorian culture to new situations. Maybe he teams up with other Mandalorian - like characters from different universes or time periods in a crossover story.
Some original majin characters created by fanfiction writers themselves also gain popularity. These characters are designed specifically to fit into the crossovers they are part of. For example, a majin assassin might be created and then crossed over into a Naruto - like ninja world, where their unique majin abilities make them a formidable foe or an unexpected ally.
One of the most popular characters to crossover with Shredder is Batman. The contrast between Batman's detective skills and high - tech gadgets and Shredder's martial arts and villainy makes for an exciting story. Another is Spider - Man. His acrobatic fighting style and quick - witted banter could create some really engaging interactions with Shredder. And of course, Wolverine. His claws and healing factor would be a great match against Shredder's weapons and combat expertise.
Ichigo is often very popular. His zanpakuto, Zangetsu, has a complex and powerful nature that makes for great crossover potential. Another popular one is Byakuya. His Senbonzakura is iconic and when crossed over with other zanpakuto, it can create some really visually stunning and story - rich scenarios.
In Fortnite crossover fanfiction, characters like Kratos from God of War are quite popular. His powerful and brutal fighting style makes for exciting stories when he's dropped into the Fortnite world. Another popular one is Master Chief from Halo. His military - like skills and advanced weaponry create interesting scenarios in Fortnite battles. Also, Sonic the Hedgehog is often used. His super - speed can be a great asset in the fast - paced Fortnite environment.
Definitely Jotaro Kujo. His cool and stoic personality, along with his powerful Star Platinum stand, makes him a favorite for crossovers. He can easily be inserted into different universes and hold his own against various opponents.