Well, the plot could start with Goku somehow ending up in the Harry Potter universe. Maybe through some kind of interdimensional portal. He meets Harry's mother and falls in love. Then, Harry is born with some unique powers that are a combination of Goku's Saiyan abilities and the magic of the wizarding world. As Harry grows up, Goku tries to teach him about his Saiyan heritage while also dealing with the challenges of the wizarding world like Voldemort.
In these fanfictions, Draco is often a good dad because he is protective. He doesn't want his children to face the same hardships he did. For example, he shields them from the dark influences that once surrounded him.
I'm not sure specifically as there could be many novels with such a title. It might be about the contrast between a good father figure and a bad one, perhaps exploring different parenting styles, their impacts on family members, and the relationships within the family.
There might be a 'goku is harry potter's dad' fanfiction, but it's not a common or mainstream one. Fanfiction writers are known for their wild and imaginative ideas, so it's not impossible. In such a fanfiction, we could expect to see a lot of clashes between the two different fictional worlds. For example, how would Goku's lack of knowledge about magic interact with Harry's magical upbringing? And how would the wizarding world react to a Saiyan - like being as Harry's father? It would be a very unique and potentially hilarious take on both universes.
" Despicable Milk Dad 3 " was a well-received movie about the protagonist Gru's battle with the villain Minions to protect the Earth and the Minions 'families after his third rise. The film had excellent visual effects and a thrilling plot, but it was also full of warmth and touching emotions. The audience was generally satisfied with the film and praised it as an excellent sci-fi action film.
Some Dragon Ball - themed forums also often have sections dedicated to fanfiction. Members share their own works or recommend good ones they've read. For example, the Kanzenshuu forums might have some great Goku and Black Goku fanfiction.
Benjamin. It has a certain elegance to it. In a story, a dad named Benjamin could be a wise and gentle father, perhaps one who imparts important life lessons to his children.