The East India Trading Company could still be a major antagonist. They might be even more determined to capture Jack Sparrow, especially if they discover his non - human nature and fear what he could do. They would see him as a threat to their control over the seas and trade.
It could be the old enemies of Jack Sparrow. They might see his daughter as a way to get revenge on him. For example, those he has double - crossed in the past.
One possible plotline could be that Jack Sparrow is a shapeshifter. He might change into different forms to escape from his enemies or to gain access to hidden treasures. For example, he could transform into a seagull to spy on other pirate ships.
Well, perhaps a power - hungry wizard from a neighboring magical realm. He hears about the baby's unique powers that combine Jack Frost's and Elsa's abilities and wants to harness that power for his own evil plans. Or it could be a group of dark fairies who are envious of the baby's special connection to both the winter world and Arendelle. They might try to kidnap the baby and raise it to be on their side, away from Jack and Elsa.
Another possible antagonist could be a powerful ghoul organization that wants to use Kaneki for their own purposes. They might try to capture him and experiment on him to figure out how to create more half - humans or use his powers for their own gain. They don't care about Kaneki's well - being and are only interested in what he can do for them.
The Decepticons would obviously be the main antagonists. Megatron would see Jack as a new threat and would try to eliminate him. Starscream might also be jealous of Jack's new status and try to undermine him in any way he can.
In Captain Jack Sparrow fanfiction, Jack is a top character, no doubt. However, characters like Tia Dalma are also excellent. Her voodoo powers and mysterious nature make for great plot twists. Another good one is Will Turner. When he's included in fanfiction, his sense of honor and sword - fighting skills can lead to some great action - packed scenes, especially when paired with Jack's more roguish behavior.
Perhaps the story could revolve around her trying to clear her father's name. There could be some false accusations against Jack Sparrow, and his daughter sets out on a journey to prove his innocence. She might encounter old enemies of her father and have to use her wits and skills to outsmart them.
Well, it could be about Naruto having Jack Sparrow's adventurous spirit. Maybe he sails the seas in the Naruto world, using his ninja skills on pirate ships. He might face new enemies that are a mix of Naruto's foes and Jack Sparrow's rivals.
One possible plot could be that Jack and Angelica are on a new adventure together. They are forced to work closely to find a hidden treasure. Along the way, they face many challenges and in a moment of victory and celebration, they share a kiss. It could be a spontaneous moment, filled with the excitement of the discovery and their underlying attraction for each other.
A group of radical anti - revolutionaries could be the antagonists. They oppose the human revolution for ideological reasons, believing that it goes against the natural order or some long - held religious or cultural beliefs. Adam Malik would then have to face their resistance and attempts to stop the revolution in its tracks.