A surprising ally could be the nymphs. Usually not thought of as major combatants, but they know the land so well. In the battle of New York, the nymphs could have used their knowledge of the city's parks and hidden places to set traps for the enemy. They could have also provided healing herbs and support to the wounded demigods.
There are many Percy Jackson fanfictions that incorporate a New York accent. Some might focus on how Percy's New York upbringing is reflected in his dialogue with that distinct accent. It could add a lot of authenticity and charm to the story. For example, when Percy is talking to his friends or getting into a scrape in the city, the accent can make his character come alive even more.
One possible fanfiction could be about Percy Jackson exploring the hidden magical corners of New York that are related to the concept of 'echo'. Maybe he discovers an ancient artifact in an alleyway that when touched, releases an echo of a past demigod's adventure. This could lead him on a new quest to figure out what the echo means and how it relates to the current threats against the demigod community in New York.
One thing that could have been different is the alliances. Maybe some of the minor gods could have joined Percy's side earlier, which would have made the battle less intense in some areas. For example, if the god of music, Apollo, had lent his support with his musical powers to disrupt the enemy, it could have been a game - changer.
A good place to start looking for Percy Jackson fanfiction with a New York accent is on fanfiction websites like Archive of Our Own or FanFiction.net. Use the search filters to look for stories that mention the New York accent in the tags or summary.
Imagine a fanfic where Percy has to navigate the New York City traffic while being chased by a pack of hellhounds. He has to use his water - based powers in creative ways, like creating water slides on the streets or using sewer water to slow down the hellhounds. This would be a really action - packed and fun story.
One great fanfic idea could be Percy Jackson exploring the hidden magical corners of New York City that are unknown even to most demigods. Maybe he stumbles upon an ancient artifact in an abandoned subway tunnel that has the power to either save or destroy the city.
Well, it could be that the 'echo' in the fanfiction is a sort of memory imprint left by the gods. In New York, Percy starts hearing these echoes everywhere. They lead him to different locations in the city where significant events in the history of the gods took place. As he follows these echoes, he uncovers a conspiracy by a group of rogue demigods who want to use the power of these echoes to overthrow the current order of the gods. Percy has to race against time to stop them and also learn some important lessons about the past and the future of the demigod world.
Another common opponent could be other demigods from different cabins. For instance, a child of Ares who might have a more aggressive and straightforward fighting style compared to Percy. This would create an interesting dynamic as they have different powers and personalities but are still on the same side in the general scheme of things.