Well, a really good DC fanfic is 'Wonder Woman's Hidden Quest'. In this fanfic, Wonder Woman embarks on a secret mission that involves ancient Greek mythology and modern - day threats. As for Marvel, 'Iron Man's Legacy' is a great one. It explores what happens after Tony Stark's death and how his technology is carried forward by a new generation of heroes. Fanfics like these keep the spirit of the DC and Marvel universes alive.
Some excellent DC fanfics include 'The Flash's Time - Twisted Adventure' which plays around with the concept of time travel in a really interesting way. In the Marvel realm, 'Captain America's Unfinished Business' is a top - notch fanfic. It shows Steve Rogers dealing with some loose ends from his past that were not fully explored in the official stories. Fanfics offer unique perspectives on these iconic DC and Marvel characters.
One of the great DC fanfics is 'The Batman's New Apprentice'. It has an interesting take on Batman taking on a new sidekick with a unique backstory. Another good one could be 'Superman's Secret Struggles' which delves into the internal conflicts Superman might face that we don't often see in the mainstream comics. And 'Wonder Woman's Hidden Quest' is also a popular one, as it sends Wonder Woman on a journey full of mystery and self - discovery.
You can start by checking out fanfic platforms like Archive of Our Own (AO3). It has a huge collection of DC and Marvel fanfics. Just use the search bar and type in the relevant keywords like 'DC' or 'Marvel' along with the character names you're interested in. Another option is FanFiction.net. There are also some Reddit communities dedicated to DC and Marvel fanfics where people often share and recommend their favorites.
One of the great Marvel fanfics is 'The Avengers: Reassembled'. It has an interesting plot where the Avengers face a new threat that combines the powers of their previous enemies. Another good one is 'Spider - Man: New Beginnings' which gives a fresh take on Peter Parker's origin story. And 'Thor: Lost Realm' is also popular, it takes Thor on an adventure in a forgotten realm.
Well, in Marvel, 'Civil War' is a must - read. It pits superhero against superhero and explores themes like freedom and responsibility. In DC, 'Identity Crisis' is quite good. It delves deep into the personal lives of superheroes and the moral dilemmas they face. Also, 'All - Star Superman' is a wonderful graphic novel that shows the best of Superman.
I think Spider - Man from Marvel has an amazing story. Peter Parker is just an ordinary kid who gets superpowers by accident. He has to juggle his normal life, including school and relationships, with his new responsibilities as a superhero. His struggles are very relatable. He faces financial problems, has to keep his identity a secret, and still tries to do the right thing. It's a story that shows that with great power comes great responsibility.
One great DC Marvel crossover fanfic is 'The Avengers and the Justice League: United Front'. It has an exciting plot where the two teams come together to fight a common, powerful enemy. The character interactions are well - written, especially the exchanges between Superman and Captain America, who share similar leadership qualities.
I really like 'Marvel x DC: The Crossover Chronicles'. In this fanfic, the writers explore how the technology of Iron Man could interact with the magic of DC's sorcerers like Zatanna. It's full of exciting moments and interesting character dynamics.
There's also 'The Flash and Quicksilver: A Race of Worlds'. This fanfic focuses on the two speedsters from different universes. They start off as rivals but then become friends as they face a threat that only their combined speed can defeat. It has some really cool scenes with their super - speed abilities.
One great Marvel DC crossover fiction is 'JLA/Avengers'. It was a huge event that brought together the iconic characters from both universes in an epic battle and team - up. The art was stunning and it was exciting to see Superman interact with Thor, for example.
For beginners, 'The Sandman' by Neil Gaiman is a great pick. It has a very accessible story that draws you into a rich and magical world. The art is also very good at setting the mood. It's a story about dreams and the entities that inhabit them, which is both fascinating and easy to get into.