Perhaps they would team up against a common enemy. In fanfiction, new threats are often created. They could combine their strength and unique techniques to defeat the bad guy.
There could also be other characters from the Dragon Ball universe making an appearance. For example, Vegeta might show up. He could be curious about Fem Goku and how she compares to Goku in terms of power. Or Bulma could be there, perhaps she's interested in the technology or biology behind Fem Goku's existence.
In this fanfiction, they might have an epic sparring session. Goku could pass on some of his old fighting techniques to Goku Jr.
There could also be a moment of self - discovery for both of them. Goku might see his past self in Kid Goku and realize how far he has come, while Kid Goku could get a glimpse of his future potential through meeting his adult self. They could share stories about their friends and enemies, like how Goku could talk about Vegeta and Frieza to Kid Goku, and Kid Goku could tell Goku about his early battles with the Red Ribbon Army.
In a fanfiction where Kid Goku meets Future Goku, one possibility is that Future Goku would be amazed at seeing his younger self. He might share some of the dark experiences he has had in the future, like the battles against powerful enemies and the losses. Kid Goku, being young and full of energy, could be inspired by Future Goku's strength and determination. Maybe he would start training even harder, eager to reach the level of his future self.
In this fanfiction, they might have an epic sparring session. Adult Goku could teach Kid Goku some new techniques, like the Instant Transmission. It would be amazing to see how Kid Goku reacts to Goku's Super Saiyan forms.
A 'naruto meets goku fanfiction' could involve a lot of cultural exchange too. Naruto comes from a world of ninjas with complex village politics and a system of jutsu. Goku is from a world of martial arts and superhuman powers. They could share their knowledge and techniques. Maybe Naruto could teach Goku some stealth and infiltration skills, while Goku could show Naruto how to better control his inner energy for more powerful attacks. This exchange could lead to both of them becoming even stronger and more well - rounded fighters.
In a 'Goku meets Minato' fanfiction, they might start by being a bit suspicious of each other at first. But then, as they realize they both have a strong sense of justice, they could begin to share their fighting techniques. Goku could teach Minato about Super Saiyan forms, and Minato could show Goku his Rasengan and how he uses his teleportation jutsu in combat.
Well, Goku could teach Naruto some new ki - based techniques. Since Goku is a master of ki control in the Dragon Ball universe, he might show Naruto how to harness a similar kind of energy. Naruto, on the other hand, could introduce Goku to the world of ninjutsu. Maybe they would team up against a common enemy that combines the threats from both their worlds, like a super - powered ninja - saiyan hybrid villain.
Well, in this fanfiction, Goku and Bulma might go on an adventure together. They could explore new planets or search for the Dragon Balls in a different way than in the original story.
Well, Goku could be intrigued by Spyro's fire - breathing ability. He might want to test his own powers against it, like having a friendly sparring match where Goku uses his ki blasts and Spyro his fire breath.