One common theme is family. Given their roles as husband and wife and as parents, a lot of fanfiction explores how they balance family life with the constant threats in the Dragon Ball Z world. For example, stories might show Goku trying to be a better father while still being the planet's defender.
One great piece of fanfiction could be 'Chichi's Training Regimen for Goku'. In it, Chichi decides to take Goku's training into her own hands to make sure he's not just focused on fighting but also on family. It shows a different side of their relationship, with Chichi being more assertive in Goku's life.
Some fanfictions could be about Chichi's past. What was her life like before she met Goku? How did she become such a strong - willed woman? These types of fanfictions can provide a lot of background and depth to her character that we might not have seen fully in the original 'Dragon Ball Z' series.
In this fanfiction scenario, Goku meeting Gine could be really interesting. Gine is Goku's mother, and in a fan - made story, their meeting might involve Gine finally seeing how strong her son has become. Maybe she'd be proud of all his achievements in protecting the Earth and the universe. It could also be a very emotional encounter as Goku has grown up without her presence for most of his life.
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.
A more action - packed storyline could be Chichi getting kidnapped by an old enemy of Goku. Goku then has to race against time to save her. Along the way, he might face some new and powerful foes. Goku's determination to save his beloved Chichi would be the driving force of this exciting story.
Love and family are common themes. Since Goku and Chichi are husband and wife, many fanfictions explore how they balance their family life with Goku's constant need to fight and protect the universe. It shows how their love endures through all the challenges.
One possible fanfiction could be where Goku is faced with an otherworldly entity that he can't sense or understand. This makes him scared as his usual confidence in his power is shaken. Maybe it's a being from a different dimension that defies all the rules he knows about fighting.
One great fanfiction is 'Goku and Goten's Training Days'. It focuses on Goku teaching Goten new techniques. It's really exciting as it shows their father - son bond through the training sessions.
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.