Who would be the main villain in a 'naruto lives with goku fanfic'?

A rogue ninja who has made a pact with dark forces. He wants to use Goku's son to open a portal to the Saiyan planet and then invade it. He would be constantly trying to manipulate the situation to get Goku's son to do his bidding. He has a team of minions who are also skilled in both ninjutsu and some dark form of ki - like powers.

It could be a powerful demon that has the ability to absorb the powers of others. This demon has been observing both Gohan and Naruto from the shadows and wants to take their powers to become invincible.

A new villain could be created specifically for this fanfic. Maybe an interdimensional being that senses the strange energy fluctuations caused by Gohan's training of Naruto. This being, fearing the new power that Naruto might gain, decides to invade Naruto's world to stop the training and take over the world for itself.

A possible main villain could be an evil ninja who has somehow managed to harness dark magic similar to that which the Monkey King once faced. He could be using this magic to try and take over both the ninja world and the world of the Monkey King.

Well, in this kind of fanfic, it's not so simple to decide who is stronger. Goku's power levels keep increasing exponentially as he reaches new super saiyan forms. He can destroy planets with his power. Naruto, though, has the ability to harness the power of the nine - tailed fox which is also extremely powerful. Moreover, Naruto has his own unique chakra - based attacks. If they were to fight, Goku might start off with an advantage due to his speed and power. But Naruto is a very quick learner and could adapt during the fight. Also, Naruto has his friends and allies that could potentially tip the balance in his favor in a more complex battle scenario.

It's really hard to say. Goku has the power to destroy planets and reach incredible levels of strength with his Super Saiyan forms. However, Naruto has the power of the tailed beasts and his own sage mode which gives him a huge boost in power. And Sonic, while he may not have the raw power like the other two in terms of destruction, his speed is so great that he could potentially outmaneuver both of them. So it really depends on the situation and how the author writes it.

One possible plot could be that Naruto and Goku end up in a strange new dimension where they have to live together. They start by trying to understand each other's powers. Naruto is amazed by Goku's Saiyan abilities like the Kamehameha wave, while Goku is intrigued by Naruto's ninjutsu. They then team up to face common enemies in this new world. Maybe there are villains from both their universes that have also been brought there. Together, they train and learn from each other, with Naruto teaching Goku about stealth and strategy, and Goku showing Naruto how to push his physical limits even further.

It could be someone like Frieza. Frieza is extremely powerful and evil in the Dragon Ball universe. If he somehow found his way into the Naruto universe or if the fusion character was in the Dragon Ball universe, he would be a great threat. His ability to transform and his cold - blooded nature would make him a tough opponent for the fusion of Goku and Naruto.

It could be some of the more powerful villains from both universes combined. Maybe Frieza and Orochimaru team up. Frieza's lust for power and Orochimaru's desire for immortality and knowledge would make them a formidable pair. They would target Naruto because of his potential and Goku because of his strength, aiming to either destroy them or use them for their own evil purposes.

Maybe it would be a combined form of some of Naruto and Goku's most powerful enemies. For example, if Frieza and Orochimaru somehow combined their powers and knowledge. They would be a very tricky opponent for the fused Naruto - Goku as they would know the strengths and weaknesses of both heroes.