Well, sometimes in 'the dark knight crossover fanfiction', the concept of alternate timelines is explored. This could mean a version of Batman that has different moral boundaries or a Gotham that has a different power structure. It allows for new interpretations of the characters and their relationships. Like, what if Harvey Dent never became Two - Face in a crossover scenario? It could change the entire story arc.
A crossover with Zelda might also be cool. Picture Shovel Knight in the land of Hyrule, using his shovel to dig up secrets in the dungeons, and perhaps helping Link in his quest. He could even face off against some of Zelda's classic villains alongside Link.
One interesting concept could be the fusion of Naruto's ninja world with the dark and gritty atmosphere of the Dark Knight. Maybe characters in the fanfiction take on darker personalities like Naruto having a more brooding side while still maintaining his core values. Another concept might be the use of jutsu in a way that mimics the high - tech gadgets in the Dark Knight universe.
One interesting concept could be the return of the Dark Knight in a different context. Maybe he comes back to a Gotham that has changed drastically. For example, new villains could have emerged that he has to face using his old and new skills combined.
One interesting concept could be the merging of the unique combat mechanics. For example, Dark Souls' methodical and strategic combat combined with Bloodborne's faster, more aggressive style. Maybe in the fanfiction, a character from Dark Souls has to adapt to the more blood - thirsty and fast - paced battles of Bloodborne's world.
One interesting concept could be the exploration of Ichigo's new powers in a 'dark godlike' form. It might involve him having enhanced combat abilities that are both awe - inspiring and a bit terrifying.
One interesting concept could be the combination of different universes within the fanfic. For example, if it crosses over with another well - known fantasy world, it might bring new and unique magic systems or character interactions.
One interesting concept could be exploring the characters' hidden emotions. In fanfiction, authors often delve deeper into the psyche of the characters from the original work. For example, they might show a character's fear of the dark in a more profound way, which wasn't fully explored in the original. Another concept could be the creation of new relationships. Fanfiction writers might pair characters in unexpected ways within the 'in the dark' setting, adding a new dimension to the story.
One interesting concept could be the clash of different mythologies. For example, if Nyarlathotep were to cross over with Norse mythology, the chaos he represents could disrupt the order of the Nine Worlds. Another concept might be the interaction between Nyarlathotep and modern-day characters. It could explore how an ordinary person would react to the presence of such a malevolent entity from Lovecraftian lore. Also, the idea of Nyarlathotep influencing different historical events in a crossover fanfiction can add a new layer of depth, like how he might have affected the fall of the Roman Empire in a fictional scenario.
One interesting concept could be the combination of different alien species from various sci - fi universes with the Space 1999 setting. For example, mixing the Goa'uld from Stargate with the Moonbase Alpha crew. It could create really unique power dynamics and storylines.
One interesting concept could be Momonga in a different game world, like being transported to a fantasy RPG world. He might use his unique skills from the original setting to survive and thrive there.