Well, in this kind of fanfiction, Peter might have a morally ambiguous nature. He could be someone who doesn't always follow the traditional rules of heroism. For example, he might use unorthodox methods to achieve his goals. Maybe he's more self - centered than a typical hero and focuses on his own interests while still having some redeeming qualities that make readers root for him.
Perhaps some powerful organizations or institutions. If Peter is trying to disrupt the status quo, these entities that benefit from the current system would be his antagonists. They might see him as a troublemaker and try to stop him. They could use their resources and influence to try and take Peter down, creating a lot of conflict in the fanfiction.
A lot of anti - hero OCs have a sense of justice that is different from the mainstream heroes. They might not care about fame or public approval like the heroes do. Instead, they focus on what they think is right, which could involve breaking some laws or going against the hero establishment. Their appearance might also be more edgy or different from the clean - cut hero look. They could have a more 'street - smart' attitude rather than the polished hero demeanor.
One possibility could be that Naruto's anti - hero status in the Young Justice fanfic is due to him being a loner. Maybe he doesn't trust the Young Justice team at first because of his past experiences. He might have his own way of doing things that doesn't always align with the team's methods, like being more brutal in combat against villains.
Stain could be considered as an anti - hero in fanfiction. His extreme views on heroes, while not entirely acceptable, could be delved into deeper. He believes that only true heroes should be recognized and is willing to take extreme measures to prove his point. A fanfiction could explore a different side of him, perhaps one where his actions are more nuanced.
For a Naruto anti - hero in the Justice League fanfiction, he could be a character who is on a quest for redemption. In the Naruto world, he may have done some things that he regrets. In the Justice League, he sees an opportunity to use his powers for good in a different way. He might have the ability to summon some of the Naruto creatures, like toads, and use them in battles against the League's enemies. His costume could be a mix of Naruto - style clothing and elements from the Justice League uniforms.
In 'naruto anti - hero fanfiction', a prevalent theme is the struggle between good and evil within Naruto himself. He has been taught to be a hero, but certain events make him question that. Rebellion is another theme. Naruto rebels against the established shinobi order. For example, he may oppose the Hokage or the council. Also, the theme of isolation can be seen. As an anti - hero, he is often isolated from his former friends and allies as he goes on his own path.
One common theme is self - discovery. Since Peter is alone, he often has to figure out his own strengths and weaknesses. Another is sacrifice. He might have to give up certain things to uphold his role as a hero.
There is indeed some. Some fanfiction might focus on Peter's internal struggles as a lone hero, like how he copes with isolation while still trying to do the right thing. It could also explore his relationships in a new light, given his solitary nature in these stories.
Often, other symbiotes can be the main antagonists. For instance, Venom himself might see Anti - Venom (Peter) as a threat and constantly try to attack him. Venom could be jealous of the power that Anti - Venom has or simply view Peter as an enemy because of the different nature of their symbiotic relationships.