In this fanfiction, Naruto could be a patient in Arkham Asylum. He has lost his memory and believes he is in some strange version of Konoha. The doctors at the asylum are trying to understand his 'delusions' about ninjas and chakra. Meanwhile, some of the more evil inmates sense his power and try to manipulate him for their own gain.
One idea could be that Naruto is somehow transported to Arkham Asylum. He might initially be confused by the strange new world, but his ninja skills could come in handy. For example, he could use his speed and agility to avoid the traps and villains in the asylum. Maybe he teams up with Batman, who is intrigued by Naruto's unique abilities.
His Rasengan could be a very destructive force. In the close quarters of Arkham Asylum, it could cause a lot of damage to the walls and cells. The guards and inmates would be very intimidated by it.
A more complex fanfiction could involve all of Team RWBY in Arkham Asylum. Blake could use her stealth skills to move around unnoticed, Yang's strength would be useful in physical confrontations. They could be there because some powerful enemy has lured them there, thinking it's a place where they'll be weakened. But together with Batman and some of the inmates who might side with them (like Harley Quinn who has a complex sense of morality), they could turn the tables on the enemy.
A 'naruto in arkham asylum fanfiction' would likely involve Naruto being transported to the Arkham Asylum universe. He would be confused at first, but then quickly adapt. His chakra abilities would seem like magic to the inmates and staff. He might try to find a way to get back home while also getting involved in the internal power struggles within the asylum.
Naruto might end up teaming with some of the more sane inmates who have a sense of right and wrong. For example, he could form an alliance with a reformed criminal who wants to help Naruto navigate the complex and dangerous world of Arkham. Together, they could try to expose the corrupt elements within the asylum.
A crossover with the Justice League. Imagine if a mind - controlling villain took over Arkham Asylum and used the inmates as a weapon against the Justice League. The League would have to infiltrate the asylum, not only fighting the villains but also trying to break the mind control without harming the inmates too much.
Ruby might be in awe of the high - tech security and the dark, brooding atmosphere of Arkham. She would probably try to find a way to make friends with the inmates, thinking she could help them reform, which would be a very different approach compared to how things are usually done in Arkham. Her cheery personality would contrast greatly with the gloomy place.
Well, a great plot for Spider - Man Arkham Asylum fanfiction could be that the Green Goblin somehow gets locked in Arkham. Spider - Man follows him there to finish their feud once and for all. But when he arrives, he discovers that the asylum's strange atmosphere is affecting his powers in unexpected ways. He has to rely on his wits and some newfound allies among Arkham's inmates to defeat the Goblin and escape. This would create a lot of interesting scenarios as Spider - Man tries to navigate the dangerous and unpredictable world of Arkham Asylum.
One idea could be exploring Scarecrow's backstory in more depth. Maybe show his early days in Arkham Asylum, how he was treated by the staff and inmates, and what led him to become the terrifying Scarecrow. Another plot could involve Scarecrow creating a new and more powerful fear toxin that not only affects Batman but also the citizens of Gotham, and Batman has to race against time to find an antidote while dealing with his own fears.
One great 'Batman Arkham Asylum' fanfiction is 'The Dark Knight's Redemption'. It delves deeper into Batman's psyche as he battles his inner demons while trying to escape the asylum. The author does a great job of capturing the dark and gritty atmosphere of the game.