Definitely not. Justice League is a creation of DC Comics. Marvel Comics has its own set of superhero teams and characters that are distinct from those in the Justice League.
The Flash might initially be in denial. He's used to Batman always having a plan and his death would be a huge shock. He would then turn his speed into a tool for investigation, trying to find out exactly what happened. Green Lantern could feel a sense of loss but also be spurred into action, using his ring to try and prevent future tragedies like Batman's death. He might create constructs in Batman's memory to inspire the team.
Superman might feel a sense of guilt if he could have saved Naruto but didn't. He's always about saving lives, and Naruto's death would be a blow to his self - image. Batman would see it as a mystery to solve, trying to figure out how Naruto got to their world and what led to his death. Wonder Woman would be saddened by the loss of a potential ally. The Flash might be more cautious in future battles, seeing how quickly Naruto was taken down. Green Lantern could question his own power, as Naruto had unique abilities that he couldn't protect from.
You can start by looking on fanfiction platforms like Archive of Our Own (AO3). It has a vast collection of fanfics, and you can simply search for 'Young Justice Justice League deaged' in the search bar. Another option is Fanfiction.net, which also has a large number of fan - created stories. Some Tumblr blogs may also feature or recommend such fanfictions. Just search for relevant tags like #YoungJustice #JusticeLeague #deaged.
Another top - notch Justice League story is 'Darkseid War'. This story arc has the Justice League facing off against the powerful Darkseid. It's a huge, epic battle that involves not only physical combat but also moral and ethical dilemmas for the heroes. It also brings in elements of the New Gods and expands the DC universe in a really exciting way.
In fanfics involving Catwoman in the Justice League, she often brings a unique dynamic. Her morally grey nature contrasts with the more traditional heroes. For example, she might be involved in a heist that has unexpected consequences for the Justice League. Her skills as a thief and her acrobatic abilities make her a formidable character in these fictional stories.
One of the top stories could be 'Tower of Babel' which shows the vulnerabilities within the Justice League when their secrets are used against them. Another might be 'The Darkseid War' that involves an epic battle against Darkseid. And 'Crisis on Infinite Earths' also has a significant impact on the Justice League's story as it reshapes the multiverse they exist in.
The Justice League typically includes well-known heroes like Superman, Batman, Wonder Woman, The Flash, Green Lantern, Aquaman, and others. These characters form the core team.
The 2017 Justice League movie isn't from Marvel Comics. It's part of the DC Comics franchise. DC has its own unique set of heroes and storylines that are distinct from those of Marvel Comics.
It's hard to give an exact number because new comics are constantly being released. But there are definitely hundreds of Justice League comic issues over the years.