Daenerys Targaryen remains popular in alternate universes as well. She might have a different set of dragons, perhaps ones with even more unique abilities. Her conquest of Westeros could be either more brutal or more benevolent, depending on the fanfiction writer's vision, and her relationships with other characters could be completely reimagined.
Jon Snow is still very popular. In alternate histories, he could have different parentages that lead to unique storylines. For example, if his true Targaryen heritage was revealed earlier, he might have been more of a central figure in the fight for the throne from the start.
Sasuke is often very popular in Naruto AU fanfiction. His complex personality and powerful abilities make him a great character to reimagine in different universes. Naruto himself is also a common focus, as writers like to explore different versions of him.
In Avengers alternate universe fanfiction, Steve Rogers is quite popular. He represents the old - fashioned values and strong leadership, which can be a great contrast or a source of conflict in different universes. Thor is also well - liked. Imagining him in different settings, like a more modern or a more magical alternate universe, is really fascinating. Natasha Romanoff is popular too. Her skills as a spy and her complex past can be the basis for many engaging stories in alternate universes.
The symbiote - Venom often has interesting interpretations in alternate universe fanfiction. In some universes, it could be a heroic entity instead of a villain, bonding with Spider - Man in a different way. Otto Octavius, or Doctor Octopus, also gets a lot of attention. In some alternate stories, he might be redeemed and become an ally of Spider - Man, or his origin could be completely different, like being a scientist from a parallel dimension.
In alternate universe Percy Jackson fanfiction, Percy is obviously a top character. People love to put him in various situations, like a world where he's a pirate. But Annabeth is right up there too. Her relationship with Percy and her own skills make her a key figure. Grover also has his fans. In an alternate universe where he has more magical abilities or is a different kind of nature spirit, he can be really interesting. And then there's Luke. Even in alternate universes, his complex character and his fall from grace are often explored, making him a popular character to include.
Twilight Sparkle is often popular. Her intelligence and ability to adapt can be really interesting in an alternate universe. Rainbow Dash is also a favorite. Her bravery and competitive spirit can lead to some exciting storylines in different universes.
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.
Jon Snow is very popular. He has a complex backstory and his character arc in the original series leaves a lot of room for fanfiction exploration. Fans often write about his life after the events of the show, or they create alternate scenarios for his journey. Daenerys Targaryen is also a favorite. Her dragon - riding and her quest for the Iron Throne make for exciting fanfiction material.
One of the most popular assassin characters in Game of Thrones fanfiction is Arya Stark. In the original series, Arya has assassin - like training in Braavos. In fanfiction, her skills are often enhanced and she is sent on all kinds of secret and dangerous missions. Another could be Jaqen H'ghar. His mysterious nature and assassin skills make him a fascinating character to explore further in fanfiction. He can change his face, which adds an extra layer of intrigue to his character in fan - made stories.
The Master Chief is often a popular character. His badassery from the Halo series translates well into the complex world of Game of Thrones. He stands out as a strong and honorable warrior, much like some of the fan - favorite characters in Game of Thrones like Jon Snow.