Can you recommend some interesting plots in 'the flash and justice league crossover fanfiction'?

One interesting 'Justice League Crossover Harem Fanfiction' could be 'Justice League: Harem of Heroes'. It features unique crossovers and character interactions within the harem concept.

Obviously, the Flash is one of the main characters. He brings his super - speed and unique personality to the story. And then, of course, members of the Justice League like Superman, Batman, Wonder Woman, etc. Superman with his super strength, Batman with his intelligence and gadgets, and Wonder Woman with her combat skills and Amazonian heritage are all likely to play important roles.

One popular 'prototype justice league crossover fanfiction' is 'Prototype Meets the Justice League: A New Alliance'. It combines the dark and gritty world of Prototype with the heroic and diverse Justice League. The story often involves Alex Mercer interacting with Superman and the others, creating some really interesting power - play scenarios.

One idea could be that the Young Justice team gets accidentally transported to an alternate dimension where the Justice League has turned evil. The Young Justice members then have to figure out how to reverse the situation while also evading capture from their once - heroes. Another could be a time - travel plot where the Young Justice team travels back in time and teams up with the early days of the Justice League to stop a threat that was thought to be long gone but has resurfaced in their own time. A third idea is that a powerful new villain emerges who can only be defeated by a combined effort of the Young Justice and Justice League, but first they have to overcome their differences in fighting styles and leadership.

In this type of fanfiction, a plot might be that Batman's harem is formed by various female superheroes or characters associated with the Justice League. The story could explore how their different personalities and powers interact within the harem. For instance, Wonder Woman might bring her Amazonian values and leadership skills, while another character could offer a more tech - savvy or street - smart perspective. And all of this while they are in a relationship with Batman and also working together in the Justice League.

Another possible plot is a love story set against the backdrop of the Throne of Atlantis. Maybe a Justice League member, like Wonder Woman, falls in love with an Atlantean noble. But their love is complicated by the political unrest in Atlantis and the impending threat to the Throne. They have to fight against both external enemies and internal opposition to be together while also saving Atlantis.

Maybe a villain from the Justice League's rogues gallery teams up with an Avengers foe. Let's say Lex Luthor and Doctor Doom. They create a device that can swap powers between heroes from both teams. This leads to some really fun and chaotic situations. For instance, Captain America with the Flash's speed or Wonder Woman with the Hulk's strength. The two teams have to figure out how to work with their new, swapped powers and stop the villains.

One interesting concept could be the clash of ideologies. The Watchmen characters have a more gritty and morally ambiguous view, while the Justice League often represents more traditional hero values. Their interaction might lead to intense debates on how to handle threats.

In this type of fanfiction, the Predator could team up with the Justice League against a common enemy. For example, a powerful alien race that wants to conquer Earth. The Predator's skills in hunting and combat could be a great asset to the League. Aquaman could help the Predator adapt to the underwater environment if part of the battle takes place there. Green Lantern could use his power ring to create constructs to help in the fight against this new threat, while the Predator uses its stealth and weaponry.

A crossover with the Avengers. Picture the Justice League and the Avengers having to work together to stop an interdimensional threat. There would be clashes in leadership styles between Captain America and Superman, and also a lot of cool moments as different power - sets are combined to fight the enemy.