If Goku were raised on Planet Vegeta, his power development would be different. The Saiyans on Planet Vegeta have a different training regime. They focus on combat from an early age. Goku would be exposed to much harsher training, which could potentially make his power grow faster in the beginning. However, he might not have the same kind of spiritual growth that he had on Earth. His power would be more centered around physical strength and battle instincts rather than the combination of physical, mental, and spiritual growth he experienced on Earth. He might also unlock Saiyan transformations earlier due to the intense pressure and competition on Planet Vegeta.
His power would develop more in line with Saiyan traditions. He'd probably have a stronger base power due to the intense training environment on Planet Vegeta. There would be more emphasis on raw power and combat skills from a young age.
Well, he would probably be a very different person. He might be more in tune with the Saiyan warrior culture. He could be more aggressive and less empathetic compared to the Goku we know. He would grow up learning the ways of the Saiyans on Planet Vegeta, which means he'd be trained to fight and conquer from a very young age.
His social skills might be different. Instead of the somewhat naive Goku we know, he could be more aware of social norms. Bulma could teach him about proper behavior, but at the same time, his Saiyan impulsiveness would still shine through at times. So he might be a strange mix of a well - mannered person in some situations and a wild fighter when provoked.
His character would develop a more strategic side. Beerus is a very strategic fighter, and Goku, being raised by him, would learn to think more before acting in battles. He would also become more aware of the power hierarchy in the universe at a younger age, which could make him more cautious or more ambitious, depending on how you look at it. Additionally, his Saiyan pride might be tempered by Beerus' teachings, making him more of a team player in some ways.
It could start with mutual respect. Goku respects Female Vegeta's strength, and she respects his. Then, they might have some friendly competitions which gradually lead to a closer connection. For example, they could compete in a tournament and after the fight, instead of being enemies, they start to understand each other better.
It could develop in a rather comical way at first. Goku's simple - mindedness might annoy Female Vegeta who is used to a more formal and proud Saiyan environment. But then, when Goku shows his incredible power and determination in battle, Female Vegeta would be intrigued. As they interact more, she might start to understand his way of thinking and they could form a bond. For example, during a long and tough battle against a strong foe, Goku's positive attitude might inspire Female Vegeta to fight harder, and that could be the start of a deeper connection.
At first, they might still be competitive. But as they face the challenges of the different time periods together, they could start to respect each other more deeply. For example, if they are in a time when they are much weaker, they would have to rely on each other's skills more.
It often starts with a shock or surprise at the mpreg situation. Then, they gradually learn to rely on each other more. For example, Vegeta might start to show a more caring side that he usually hides, and Goku might become more responsible. They'll have to communicate more, sharing their fears and hopes about the future with the baby.
If raised by Vegeta, Harry Potter's character would undergo a significant transformation. He would grow up with a strict training regime, which would make him physically and mentally tough. His sense of justice would be more like Vegeta's, where he believes in power as a means to protect the weak. He would also have a different view of friendship. Instead of relying solely on emotional support from friends, he would expect them to be strong allies in battle. His development would be shaped by Vegeta's no - nonsense attitude and his determination to be the best.
Vegeta would likely be arrogant towards Chibi Goku at first. He'd see him as just a puny Saiyan child. But Chibi Goku, with his innocent charm, might start to break down Vegeta's tough exterior. For example, Chibi Goku could offer Vegeta some of his food, which is a very Goku - like gesture. Vegeta would be taken aback but might slowly accept it. Then they could start to have simple conversations about their Saiyan heritage.
In some fanfictions, Vegeta could be under the influence of some external force. Maybe an evil entity has convinced Vegeta that kidnapping Goku is the key to achieving ultimate power. Vegeta, being power - hungry as he is, falls for it and kidnaps Goku. But later, he realizes his mistake and has to make amends, which can lead to an interesting story arc of redemption and friendship building between the two Saiyans.