One potential theme could be family. Vegeta's relationship with his son is explored, showing how a Saiyan warrior like him can adapt to fatherhood. Another theme might be growth, as Baby Trunks learns from Vegeta and Vegeta also grows as a person through this new connection.
There could be a theme of discovery. Baby Trunks discovers more about his father and his Saiyan roots, while Vegeta discovers new aspects of himself through his interactions with his son. Additionally, the theme of protection might be strong. Vegeta's natural instinct to protect his son could drive many of the plot points in the fanfiction, and it could also show how far he is willing to go to keep Baby Trunks safe.
The theme of legacy could be present. Vegeta imparts his Saiyan legacy to Baby Trunks, which includes their fighting skills and their sense of pride. Also, the theme of love, in a Saiyan way, could be explored. Vegeta may not show it in the most conventional way, but his actions towards Baby Trunks could convey his love and care for his son.
Well, it could be that Vegeta, upon meeting Baby Trunks, realizes the importance of family in a new way. He might start to see the future differently, knowing that he has a son to protect and guide. There could also be some cute moments where Baby Trunks tries to imitate Vegeta's tough guy expressions, which would be quite endearing.
The relationship could develop in a more emotional way. Maybe Trunks gets injured badly in a fight, and Vegeta realizes how much he cares for his son. He then becomes more protective and affectionate towards Trunks. On the other hand, Trunks could also start to understand his father better, seeing that Vegeta's tough love is actually a way of showing his love and concern. This new understanding could lead to a more harmonious and loving relationship between them.
In a 'Vegeta meets Trunks' fanfiction, a great plot could be centered around Vegeta finally opening up to Trunks about his own insecurities. Vegeta has always been this tough exterior, but he might share with Trunks his fears about not being able to protect their family or the Saiyan race. This would be a very emotional moment for both of them. Trunks would see a different side of his father, and Vegeta would be taking a big step in their relationship.
In this fanfiction, it could be that King Vegeta mistakes Trunks for a threat at first. But Trunks explains his purpose, which is to protect the Saiyan race. King Vegeta then decides to train Trunks in the traditional Saiyan ways. This training helps Trunks become even stronger and also bridges the gap between their two different generations of Saiyans.
A really cool fanfiction could be set in an alternate universe where Vegeta and Baby Trunks switch bodies for a day. This would lead to all sorts of hilarious and heart - warming situations as they try to understand each other's lives better. Vegeta would see how difficult it is for Trunks to be in his shadow, and Trunks would understand his father's strictness a bit more.
One interesting fanfiction could be about Vegeta training Baby Trunks in a new and unique way. Maybe he takes him to a far - off planet with strange gravitational forces to toughen him up.
Well, family is a big one. Vegeta's love for Trunks is often explored in the context of family bonds, which is different from his relationships with others. Protection is also common. Vegeta will do anything to keep Trunks safe. And there's the theme of legacy, with Vegeta wanting Trunks to carry on the Saiyan pride and power in a proper way.
It could be Frieza. Since he has a long - standing enmity with the Saiyans. His presence would create a great threat that King Vegeta and Trunks would have to overcome together. King Vegeta has his own history with Frieza, and Trunks knows how powerful Frieza can be in the future.
Their relationships are often shown as loving yet complex. Vegeta, who was once a cold - hearted warrior, has a soft spot for his family. He is protective of Bulma and Baby Trunks. Bulma is the brains of the family, and she manages to keep Vegeta in check. Baby Trunks is the source of joy and also a reason for Vegeta to strive to be a better person.
You can start by looking on popular fanfiction websites like FanFiction.net or Archive of Our Own. These platforms have a wide range of fan - created stories, and you can easily search for Vegeta and Baby Trunks - related fanfiction using their search bars.