Finn and Jake are still really popular even in genderbend fanfiction. Their friendship is iconic, and seeing how it changes when their genders are swapped is fascinating to many fans.
In naruto genderbend fanfiction, female Jiraiya is also a popular character. Jiraiya is known for his pervy but also wise and powerful nature in the original. As a female, it completely changes the dynamic. Her interactions with a female Naruto during training or her travels could be really engaging. Also, female Itachi is often a favorite. Itachi's complex backstory and his actions in the original series can be explored in a new light when the character is gender - swapped, especially in terms of family relationships and loyalty.
Aang is often a popular choice. Genderbending him can lead to some really interesting storylines, like how a female Aang would handle being the Avatar in a male - dominated world of bending. Another popular one is Zuko. Changing his gender can add a whole new layer to his character arc, especially his relationship with his father and his journey of self - discovery.
A gender - bent Hinata can be quite popular in these fanfics. If she is more assertive like a male Hinata might be, her relationship with Naruto (whether male or female in the fanfic) could take on a whole new dimension. Also, a female Kakashi has a certain allure, as fans are curious about how his character traits would translate to a female version.
Definitely Bakugo. His strong personality would be really interesting to see in a female form. Deku is also a popular choice as seeing his kind - hearted and determined nature as a girl could lead to some great storylines. Todoroki is another one. His complex backstory and powerful quirk would be fascinating when genderbent.
Cake is also very popular. Her unique ability to transform and her sassy personality make her a favorite. Many fanfictions explore her relationship with Fionna more deeply, like how she always has Fionna's back in tough situations.
Well, for Adventure Time, Princess Bubblegum is also highly popular in fanfiction. Her role as a scientific - minded ruler and her relationship with Finn (both friendly and sometimes with a hint of romantic tension) provides a lot of material for writers. In Bravest Warriors, Beth is quite popular. Her strong - willed and intelligent nature makes her a great character to build stories around. Additionally, the Plum character in Bravest Warriors has a certain charm that attracts fanfiction writers.
Naruto and Finn are often paired. They are both the main protagonists in their respective shows and have a lot of similarities. They are brave, determined, and always looking for adventure. Their combined energy would make for an exciting story.
Finn and Jake are definitely popular choices. Finn's heroism and Jake's laid - back yet powerful nature make them interesting to write about in the academy setting. They can get into all sorts of adventures together and with their friends at the academy.
In these crossovers, Harry Potter himself is often very popular. People like to see how he'd react to the strange and wacky world of Adventure Time. Another popular character is Jake. His stretchy powers and laid -back attitude make for interesting interactions with the more serious Harry Potter characters.
Marceline the Vampire Queen is another popular character. In alternate universes, she could be a different type of supernatural being or have a completely different backstory, such as being a guardian of an ancient and powerful magic instead of a vampire.