One option for the main antagonist could be a powerful sorcerer who wants to harness the Oc Hulk's power for his own dark magic. He might see the Oc Hulk as a key ingredient to a spell that would give him ultimate power over the world. The sorcerer could use his magic to create illusions and traps for the Agents of Smash, making it difficult for them to protect the Oc Hulk.
One idea could be that the Oc Hulk has a unique power that the Agents of Smash need to understand and control. For example, maybe his Hulk form is different in some way, like having the ability to control electricity while enraged. This could lead to a plot where they have to figure out how to use this new power for good. Another plot could be a conflict within the group because the Oc Hulk's presence disrupts the existing dynamics. He might be too aggressive or not follow the team's rules, causing tension and the need for resolution.
The Abomination could be a great main antagonist. He already has a history with the Hulk and his hatred for Hulk could extend to She - Hulk as well. He could be trying to create a new gamma - based weapon to finally defeat the Hulks once and for all.
Perhaps a dark elf from the elf OC's world who has turned bad. This dark elf could be jealous of the elf OC's connection with Naruto and the Naruto world. So, he follows the elf OC to the Naruto world and tries to disrupt their friendship and cause chaos. He might have some dark magic that is a threat to both Naruto and his friends as well as the elf OC.
It could be another powerful character who is jealous of the growing relationship between Copperhead and the male OC. This character might see the male OC as a threat to their own power or influence over Copperhead. For example, if Copperhead is a leader in a certain group, this antagonist could be a rival within the group who wants to undermine Copperhead by getting rid of the male OC.
First, get to know the characters in Agents of Smash really well. Read up on their backstories, personalities, and relationships. Then, create your OC with a clear personality, backstory, and motivation. Think about how your OC would interact with the existing characters. Start with a simple plot idea, like your OC joining the Agents of Smash on a mission. And don't be afraid to let your creativity flow!
Well, there are a few places. Wattpad could also be a source, although it has a mix of really good and not - so - great content. Another option is to join some Agents of Smash fan groups on social media platforms like Facebook. People in these groups often share their own fanfictions or know where to find the good ones. But always be cautious about the quality and make sure it adheres to the community guidelines.
It could be someone who is manipulating Loki to kidnap the Hulk. Maybe an even more powerful villain from the Marvel universe, like Thanos. He might be using Loki as a pawn to get the Hulk for his own evil purposes.
Frieza could be a great antagonist. He might see Cell's power as a threat and try to eliminate him while the OC is caught in the middle. Frieza could also try to use the OC to his advantage against Cell, creating a complex web of power struggles.
It could be a power - hungry politician who wants to use the Hulk as a weapon to gain more control during the Civil War. This person might not care about the destruction the Hulk could cause, just as long as they achieve their own goals.
It could be a new character created specifically for the fanfiction. Maybe a powerful pirate who has a vendetta against the Straw Hat crew because of the oc's presence. Since the oc is reborn into this world, they might bring some sort of change that angers this new antagonist.