One possible plot could be that there is a rift in the multiverse that brings Goku and Luffy together in a strange new world. They initially misunderstand each other and start to fight. As the fight progresses, they both realize that there is a greater threat at hand that is causing the rift. So, they team up, with Goku teaching Luffy some of his combat techniques and Luffy showing Goku the value of friendship and loyalty in a different way.
Goku in Ultra Instinct mode is extremely powerful. He has superhuman speed, strength, and can dodge attacks effortlessly. However, Luffy also has his own set of amazing abilities like his Gear Fourth form which gives him enhanced speed and power. But I think Goku would win because his combat skills and power level are just on a different scale compared to Luffy.
One common theme is friendship. Since all these characters value their friends highly in their original stories, in fanfiction they often form strong bonds across their different universes. For example, they might fight together against a threat that endangers all their worlds.
Power comparison is also a theme. Fans like to see how Luffy's powers stack up against characters from other shows or movies. For instance, if he were in the Star Wars universe, how would his Gum - Gum abilities compare to the Force? And of course, adventure. Luffy is always seeking adventure, and in crossover fanfics, he drags other characters along on his wild quests in new and strange settings.
Trunks is another good option. His time - traveling experience and sword - fighting skills could add a new dimension to the crossover. He and Xeno Goku could work together to prevent disasters in different timelines.
In a Goku Naruto crossover, both characters have their own strengths. Goku's physical strength and energy attacks are off the charts. His ability to instantly teleport and sense ki gives him an advantage in combat. Naruto, though, has a unique power system. His connection to the Nine - Tails and his ability to use different types of chakra make him a force to be reckoned with. If we consider a battle, Goku's power might seem greater on the surface. But Naruto has the advantage of being able to surprise his opponents with his ninjutsu and clones. Also, Naruto has a strong willpower that has allowed him to overcome many tough situations, which could play a role in a fight against Goku.
Sure. You can check out websites like Fanfiction.net. There are numerous fanfictions featuring these characters. Some might be about epic crossovers where Goku, Naruto, Luffy, and Ichigo team up to fight a common super - powerful enemy. Others could focus on individual character development within the context of their respective universes.
One common theme is the corruption of Luffy's ideals. His normally positive and friendly nature is warped, often by some external dark influence. For example, he might be possessed by a malevolent spirit.
One idea could be a Luffy crossover with Naruto. Luffy's carefree and determined nature could contrast with Naruto's own strong - willed personality. They could team up to face a common enemy that threatens both their worlds, like a powerful demon that can travel between dimensions. Luffy's rubber abilities and Naruto's ninja skills would make for some really cool fight scenes.