If Percy is kidnapped by wizards in fanfiction, he could use his own knowledge and skills. For example, if he's good at strategizing, he could plan an elaborate escape. He might find a magical artifact in the wizard's lair that could help him, like a teleportation device or a spell - breaker. He could also try to create a distraction, like starting a small fire or causing a commotion among the wizard's pets or familiars, and then make a run for it while they're distracted.
Percy could look for any weaknesses in the wizards' magic or their security. Maybe there are certain times of day when their spells are less effective. He could also try to befriend a less - strict wizard who might be willing to help him escape.
Naruto could try to befriend some of the Kumo ninjas who might not be in favor of the kidnapping. By winning them over, they could help him escape. Also, he could use his knowledge of ninja techniques and his quick thinking. For example, he could use substitution jutsu to switch places with an object when the guards are not looking and then make a run for it.
In fanfiction, Naruto has a lot of ways to escape from Akatsuki if kidnapped. He could wait for an opportunity when the Akatsuki members are preoccupied with their internal disputes. Since he has a strong bond with his friends in Konoha, they might be on their way to rescue him. Naruto could also use his unique Uzumaki bloodline abilities, like his strong life force, to endure any torture or imprisonment until he finds a way to get out. He might even discover some secrets about the Akatsuki during his captivity that could be used to his advantage.
He could use his Rasengan. If he manages to gather enough chakra secretly, he can surprise his captors with a powerful Rasengan and break free.
In such a fanfiction scenario, Percy might be taken to a wizarding realm. Maybe the wizards have mistaken him for someone else with special powers. They could try to use his skills, like his combat abilities if he has any, for their own purposes, perhaps in a wizarding war or a power struggle within their magical community.
They could be a group of rogue wizards who have been exiled from their own magical society. These wizards might be desperate for power and see Nico as a means to get it.
Well, perhaps Nico will be taken to a magical lair. There, the wizards might try to use his special powers for their own purposes. They could be from a dark coven aiming to sacrifice him for some dark magic ritual.
Percy could use his water powers. He could summon water from nearby sources, like pipes or even the air if it's humid enough. With the water, he could create distractions, like water walls or waves to disorient the Avengers. Then he could make a run for it.
Well, first of all, Percy is a very resourceful character. If he was captured by SHIELD, he'd quickly assess his surroundings. Since he has control over water, he could start by causing a water - related malfunction. For example, if there were any water - cooled systems in the SHIELD facility, he could make them burst. This would create chaos and give him an opportunity to slip away. He could also use his powers to sense any water sources around, like underground water channels. He could then use these as a means of escape, perhaps creating a tunnel of water to swim through. And don't forget his sword, Riptide. He could use it to cut through any barriers or fend off agents if necessary.
Superboy could use his super - strength to break free from whatever physical restraints Lex Luthor has put on him. If he's chained up, he could simply snap the chains. Then he could use his super - speed to run out of the facility before Lex Luthor's guards could react.
The kidnapped character could use their own hidden jutsu skills to break free. For example, if they have a teleportation jutsu they've been hiding, they could use it when Sasuke is distracted. Another way is to appeal to Sasuke's emotions. If they can remind him of his better nature or a past event that made him more empathetic, he might let them go.