In a Spider Man Destiny Crossover Fanfic, perhaps Spider - Man crosses paths with characters from other superhero franchises. For example, he could end up in the world of the X - Men and have to work with Wolverine and Storm to stop a mutant - hating villain from destroying both the mutant and human worlds. He might learn new skills from the X - Men and bring them back to his own world.
It could be a combined form of several of Spider - Man's classic villains. For instance, Doc Ock, Electro, and Sandman fused together by some dark magic. This new super - villain would have the intelligence of Doc Ock, the electrical powers of Electro, and the shape - shifting abilities of Sandman. Spider - Man would have to use all of his skills and perhaps some new ones he gains during the crossover to defeat this powerful adversary.
In the 'Spider - Man Web of Shadows' story, Spider - Man is at the center. His love interest Mary Jane plays a significant role. Other characters include his fellow superheroes. For instance, Luke Cage, who has his own unique abilities and can be a powerful ally or an adversary depending on the situation. Wolverine also makes an appearance. His healing factor and his ferocious fighting style add an interesting dynamic to the story. There are also the villains who are either behind the symbiote invasion or are part of the chaos it causes.
A fanfiction could focus on Black Cat's backstory within the Web of Shadows context. Maybe she has a secret past connection to the symbiotes that is slowly revealed as she battles against them. This would add depth to her character and her role in the story.
In the context of Spider - Man: Web of Shadows' evil ending fanfiction, one interesting aspect could be the character development. If Spider - Man goes down the evil path, how do the other characters react? For example, Mary Jane might be horrified and try to bring him back to the good side. Also, villains might either team up with this new, evil Spider - Man or see him as a threat to their own plans.