Batman himself is obviously one of the most popular. Fans love to see how he would be written in the Arrowverse context. Another popular character would be Alfred. His relationship with Batman and his role as the caretaker and advisor always adds depth to the story. And also, characters like Catwoman might be popular as she brings in the element of mystery and romance to the fanfictions.
One interesting concept could be the different team - ups. For example, Batman might team up with Green Arrow in unique ways that we don't see in the regular DC universe. Maybe they combine their detective skills to solve a complex mystery that spans across both Gotham and Star City.
Yes, it's quite common. Many Arrowverse fans are really into the characters and the universe, and Supergirl is a popular part of it. Fanfiction offers a way to continue the adventure when the show isn't on or to explore different aspects of the character. So a lot of viewers do check out Supergirl fanfiction.
One interesting crossover could be the Flash from Arrowverse meeting Quicksilver from the Avengers. They could have a race to see who is truly the fastest. Another could be Green Arrow teaming up with Hawkeye for an archery - based mission where they share their different techniques and arrow - making skills.
One common theme is the clash of different power systems. The magic from Harry Potter and the superpowers in Arrowverse often collide or are compared. Another theme is the idea of different worlds coming together. Characters from both universes have to adapt to a new environment.
One tip is to familiarize yourself with the Arrowverse shows first. This gives you a better understanding of the characters and their backstories, which makes the fanfiction more enjoyable. Another tip is to look for fanfiction on reliable platforms where the quality is likely to be better. Also, don't be afraid to explore different genres within the Arrowverse fanfiction, like action - adventure, romance, or mystery.
Well, AO3 is definitely the top choice. It has a great tagging system that makes it easy to find Arrowverse fanfiction. There are also some Arrowverse - related subreddits where fans sometimes share their own fanfiction or recommend good ones. Another option is Tumblr. Some bloggers post or recommend Arrowverse fanfics on their blogs.
One popular Arrowverse fanfiction is 'The Flashpoint Paradox' rewrite. It offers a different take on the Flashpoint storyline, with great character development. Another good one could be 'Green Arrow's New Legacy' which explores what would happen if Oliver Queen had a different kind of protege. And 'Supergirl: The Kryptonian Rebirth' is also interesting as it delves deeper into Supergirl's connection to Krypton in a unique way.
One key element is the character interactions. Seeing characters like Clark Kent and Oliver Queen interact, given their different backgrounds and powers, is really exciting. Another element is the merging of storylines. For example, how the threats in Smallville might be related to those in the Arrowverse.
One idea could be a story where characters from different Arrowverse shows team up to fight a new, powerful villain from a different dimension. For example, Oliver Queen from 'Arrow', Barry Allen from 'The Flash', and Kara Danvers from 'Supergirl' could combine their skills and powers to take on this threat.