Raditz is one of the main opponents. He is a Saiyan and poses a great threat to Goku at the start.
The main opponents in the Kid Goku story include Raditz as he is a significant early threat. He has much greater power than Goku initially. Then there are the various minions of the Red Ribbon Army. These guys are constantly getting in Goku's way during his quests. Also, in the martial arts tournaments, there are strong fighters like Tien who, while not exactly villains, are opponents that Goku has to face and defeat in order to progress in his journey and prove his strength.
In the Kid Goku story of Dragon Ball Z Budokai 3, Raditz is a major opponent. He's Goku's long - lost brother but comes with bad intentions. Also, there are other villains like the Red Ribbon Army soldiers. They cause trouble for Goku as he tries to find the Dragon Balls. And some of the martial artists who oppose Goku in tournaments can also be considered opponents in a way as they try to defeat him in combat.
Well, one key event is Goku's early battles against various foes. He faces off against enemies like Raditz. Another important part is his training and growth in power during this part of the story.
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.
The main characters often include Dark Goku and the Z - fighters. Among the Z - fighters, Piccolo is an important one. His wisdom and combat abilities can be crucial in dealing with Dark Goku. Krillin also has his place. His long - standing friendship with Goku and his own fighting skills add depth to the story. And Master Roshi might also make an appearance, perhaps as an advisor or someone who has some knowledge about an ancient power that could be relevant to the fight against Dark Goku.
One possible plot twist could be that Kid Goku is actually from an alternate timeline and has some powers that Dragon Ball Z Goku doesn't expect. Another could be that a villain uses their meeting to his advantage, like creating a rift between them to cause chaos.
A fanfiction might explore the idea of Bardock seeing Goku's life through a time - space rift. He witnesses all of Goku's battles and the friends he makes. Bardock is filled with pride but also realizes that Goku has a different path than the traditional Saiyan way. This makes him question the Saiyan culture he once knew. Meanwhile, Goku starts to have strange dreams about his father, which leads him to search for more about his Saiyan heritage.
In fanfiction, Kid Trunks is often depicted as a brave and energetic character. He inherits the Saiyan's strength and fighting spirit. Writers may explore his growth, his relationship with other characters like Gohan, and his attempts to protect the Earth. His time - traveling origin also adds an interesting aspect to his character development in fanfictions.
Black Goku is an interesting and powerful villain in Dragon Ball Z. He is basically a corrupted version of Goku from an alternate future. He has a pinkish - purple ki and his power is quite formidable. He sets out on a mission to destroy the present - day Earth and the Saiyans, believing that mortals are a blight on the universe.
Perhaps the fanfic could be a time - travel story. Android 21 accidentally sends Goku back in time to a point where she was first created. Goku then tries to prevent her from becoming the villain she was meant to be. This would involve Goku having to deal with the scientists who created her and convincing them to take a different path in their research, all while trying to find his way back to his own time.
Piccolo would also fit well. He has a history of fighting alongside Goku and has a complex relationship with Vegeta. His calm and strategic thinking could add depth to the fanfiction, especially in battles where they need to outwit the opponent.
One great 'Dragon Ball Z Gine and Goku Fanfiction' is 'Gine's Return'. It explores what would happen if Gine came back into Goku's life. It has some really interesting character interactions and a great plot that stays true to the spirit of Dragon Ball Z.