I'm not sure of specific titles off the top of my head, but you can start by looking on popular fanfiction websites like Archive of Our Own. Just search for 'Danny Phantom Evil Danny' and you'll likely find a bunch of interesting reads. Check out the ones with high ratings and lots of reviews.
One common theme is the struggle between good and evil within Danny. It often shows how his normal self battles his evil side. Another theme is the impact on his relationships. His friends and family have to deal with this new, dangerous Danny.
One interesting Danny Phantom Danny Evil fanfiction could be 'The Dark Turn'. In it, Danny's evil side really takes over and he starts to cause chaos in the town. It shows a different side of his character and how the relationships with his friends and family change as a result.
In Danny Phantom Evil Danny fanfiction, the way Evil Danny interacts with other characters can be really fascinating. He might manipulate his friends or foes in unexpected ways. For example, he could use his powers to deceive them into doing things that serve his evil plans. This creates a lot of tension and interesting plot twists.
Another theme is the struggle between good and evil within the Danny Phantom universe. In these fanfictions, the balance is tipped towards evil, and we see how the other characters deal with that. For example, Sam and Tucker might have to find new ways to combat an evil Danny, which involves a lot of moral and ethical decisions on their part. They have to decide how far they are willing to go to save their friend and protect the town.
However, there could also be a glimmer of the old relationship. Maybe deep down, Evil Danny still has some feelings for Sam, and she tries to use that to her advantage. But it's a dangerous game, as Evil Danny could easily turn on her. This complex mix of emotions and power dynamics would make their relationship very different from what it was when Danny was good.
One popular 'evil Danny Phantom crossover fanfiction' might involve crossovers with other popular ghost - related shows. For example, a crossover with 'The Ghost and Molly McGee'. In these crossovers, Danny's evil side could interact with the characters from the other show in unique ways. Maybe he teams up with a villain from the other show to cause chaos, or his friends have to work with the new characters to stop him.
Another one could be 'Danny's Dark Transformation'. This fanfiction details the process of Danny slowly turning evil due to a series of events, like being tricked by a powerful ghost. It shows how his relationships with his family and friends deteriorate as he becomes more and more consumed by the evil within him.
A common theme is the struggle between good and evil within Danny. When he's in his evil form in crossovers, it often shows the fight to bring him back to the good side.
Well, in 'evil danny phantom fanfiction', one interesting aspect could be the character transformation. Danny, who is usually a hero, turns evil, which completely flips the normal story dynamics. It allows for new and unique plotlines, like seeing how his friends and family react to this change. Also, the exploration of his powers from an evil perspective can be really cool. For example, he might use his ghostly abilities in more menacing ways than before.