Katniss Everdeen could also be a cool addition. She could use her archery skills and survival instincts to hold her own among the pirates. Perhaps she gets stranded in the Caribbean after a strange storm and has to team up with the pirates to survive.
Harry Potter could be a great addition. He could use his magic to help or hinder the pirates. Maybe he gets accidentally transported to the Caribbean and has to figure out how to get back home while dealing with the likes of Captain Jack Sparrow.
Captain Jack Sparrow would be really interesting. His wily and unpredictable nature would be a great contrast to the more straightforward superheroes of Marvel. He could trick them into all kinds of situations or team up with them in the most unexpected ways.
One of the most interesting pairings could be Kakashi and Barbossa. Kakashi's calm and collected nature, along with his vast array of ninja skills, would be an interesting match for Barbossa's greedy and cunning personality. They could be in a situation where they have to work together against a common enemy, like a powerful sea witch or a group of rogue ninjas who have found their way into the Pirates of the Caribbean world. And then there's Hinata and Anamaria. Hinata's shy yet strong character could befriend Anamaria, and they could have their own little adventures on the high seas, perhaps looking for a special kind of ninja - pirate treasure.
One idea could be a crossover with 'Peter Pan'. The pirates could sail to Neverland and have adventures with Peter, Tinker Bell and the Lost Boys. Maybe Captain Jack Sparrow would try to steal the fairy dust from Tinker Bell.
Another idea is that the Straw Hat Pirates from 'One Piece' (since it has some similarities to 'Pirates of the Caribbean' in terms of pirate themes) accidentally sail into the world of 'Naruto'. They team up with Naruto and his friends to face a common threat like an ancient sea monster that has been awakened by Orochimaru's experiments. This would be a really exciting crossover as the different abilities of the characters from both universes would interact in interesting ways.
Jack Sparrow from 'Pirates of the Caribbean' would be a great addition. His wily and unpredictable nature would add a new dynamic to the Jumanji adventure. He could use his skills of deception and sailing knowledge, even if there's no sea in Jumanji, to outwit the game's challenges.
Jack Sparrow is surely one of the most interesting. His wily and unpredictable nature makes him stand out. He's always got a scheme up his sleeve. Elizabeth Swann is also interesting. She starts as a proper lady but then becomes a strong and fearless pirate. Barbossa too, with his complex relationship with the curse and his own brand of pirate leadership.
Buzz Lightyear could be really cool in a Peter Pan crossover. He's from a different kind of world, a science - fiction one. His high - tech gadgets and his sense of duty would contrast with the more magical and carefree nature of Peter Pan's world. He could mistake the Lost Boys for little green aliens at first and have all sorts of misunderstandings before they team up to fight a common enemy, like Captain Hook.
Here's another plot twist. The Fountain of Youth in the Pirates of the Caribbean world is actually a creation of a minor Greek god from the Percy Jackson world. This god was trying to create a new power source but lost control of it. Now, both the pirates and the demigods are after it for different reasons. The pirates want eternal youth, while the demigods want to stop it from causing chaos in both worlds.
There might be a fanfiction plot where Elizabeth Swann, instead of being a damsel in distress at times, becomes a powerful pirate captain in her own right. She could lead her own ship and crew, and have adventures that cross paths with Jack Sparrow's. For example, she might be on a quest to find a magical artifact that can control the seas and has to outwit other pirates and sea monsters to get it.
Jack Sparrow is definitely one of the most popular. His roguish charm and love for adventure make him a great fit for crossovers. He can easily interact with the wizards and witches of Harry Potter. Harry Potter himself is also a popular choice. His bravery and magical abilities can lead to interesting scenarios when he's on a pirate ship or in the pirate - filled Caribbean.