Perhaps in the 'harry in arkham asylum fanfic', Harry has been wrongly committed to Arkham. He then has to use his wits to prove his sanity while dealing with the chaos and danger that the asylum presents. He could form unlikely alliances with some of the inmates or staff members who believe in his innocence.
One possible plot could be Harry exploring the dark secrets of Arkham Asylum. He might encounter various infamous inmates and try to survive their threats while also uncovering a conspiracy within the asylum's walls.
The plot could involve Percy arriving at Arkham Asylum, perhaps as a new patient or a visitor. He might encounter various iconic villains from the Arkham universe and have to navigate the dangerous and chaotic environment. Maybe he has a special ability or knowledge that makes him stand out among the inmates and staff.
In this fanfic, Harry could be sent to Arkham Asylum for some mysterious reason. Once there, he might discover secrets about the asylum that the authorities are trying to hide. He could start to question his own sanity as he witnesses the extreme cases of mental illness around him. And perhaps, through his experiences, he might find a way to bring some sort of change or hope to that desolate place.
He could meet the Joker. The Joker is a well - known character in Arkham Asylum, and his chaotic nature would surely create an interesting interaction with Harry.
The Joker could be the main villain. He might see Harry as a new plaything and constantly torment him with his cruel pranks and mind games, making Harry's stay in Arkham a living nightmare.
In a 'Danny Phantom in Arkham Asylum' fanfiction, Danny could be brought to Arkham by some sort of interdimensional rift. Once there, he might find that some of the inmates have a connection to the ghost zone that he didn't expect. For example, Scarecrow's fear toxins could have an unexpected reaction on Danny due to his half - ghost nature. Danny would have to use his wits and powers to survive in this new and dangerous environment. He could also form an unlikely friendship with a reform - minded inmate who helps him understand the asylum's inner workings and how to find a way back to his own dimension.
In such a fanfiction, Harry Potter could bring a new perspective to Arkham Asylum. He has faced dark wizards and dark magic, so he might see similarities in the deranged minds of the asylum's inmates. His Gryffindor courage would lead him to explore the place, perhaps making unexpected alliances with some of the more misunderstood inmates, all while trying to keep his magical identity a secret to avoid chaos.
One possible plot could be Jason Todd's struggle to maintain his sanity within Arkham Asylum. He might be haunted by his past traumas and face off against the various villains locked up there. Maybe he's trying to find a way to escape while also dealing with the asylum's staff who may or may not have their own hidden agendas.
The story in Arkham Asylum often involves Batman trying to stop the chaos within the asylum. The inmates are let loose, and he has to face his rogues' gallery, like the Joker. There are many psychological battles as well as physical ones.
He could interact with the Joker. The Joker might play mind games with Percy, trying to drive him to the brink of madness. Also, Harley Quinn could be there, perhaps befriending Percy in a strange way or using him for her own devious plans.
The plot involves Batman being lured into Arkham Asylum by the Joker. Once inside, he discovers that the inmates have taken over and he must fight his way through them. There are also sub - plots about the history of the asylum and the mental states of the villains, making for a complex and engaging story.