Well, Goku is a Saiyan, and Saiyans have a strong sense of family deep down, even if they don't always show it. When he meets his parents in this fanfiction, he could initially be in disbelief. But once he realizes it's real, he would embrace them wholeheartedly. He may even start to show off his strength and skills a bit, like a child showing off to his parents. And he would be excited to hear stories about their Saiyan race and how they ended up in the situations they did.
If the Justice League meets Zod in fanfiction, it could lead to some interesting character dynamics. Zod's militaristic and often ruthless nature would clash with the League's more heroic and moral values. Green Lantern could use his power ring to create constructs to contain Zod. Superman might have an internal conflict as he deals with someone from his homeworld who has such different ideals. The League may also have to deal with any potential collateral damage in a populated area while trying to subdue Zod.
The plot could involve Sasuke accidentally stumbling upon a hidden dimension where his parents are alive. His father, being a powerful shinobi, would test Sasuke's skills at first. His mother would be the one to break the ice and bring them all together. They could share family stories and Sasuke could see how his parents' love for each other and for him was real. This encounter might lead Sasuke to think about restoring his clan in a more positive and peaceful way rather than through revenge.
The reunion could be a bit tense at first. Superman has changed a great deal since they last saw him as a baby. His parents might not immediately recognize the powerful hero he has become. But as they start to talk and Superman shares his story, they would become more comfortable and the reunion would turn into a warm and loving moment. They would start to catch up on all the years they missed.
Maybe in the fanfiction, Superman meets his parents through some time - traveling or interdimensional portal. His parents are brought to Earth. They are amazed by how their son has adapted to this new planet. They might help him understand more about his Kryptonian heritage and powers. For example, they could teach him some long - forgotten Kryptonian techniques that make him even more powerful in his fight for justice.
Well, it could be that Harry meets his parents in a special magical realm created just for them to reunite. His parents could show him some long - lost family magic that only their bloodline can use. And they might introduce Harry to relatives he never knew existed, which could change his perspective on his family history.
Obviously, Natsu himself would be one of the main characters. His parents, whose identities are likely to be revealed in the fanfiction. There could also be his friends, like Lucy, Gray and Erza. They might be there to support Natsu during this emotional encounter or play a role in helping him find his parents.
Well, it might be that in the fanfiction, there's a parallel universe where Batman's parents didn't die. So he meets them in this alternate reality. He has to adjust to a world where he doesn't need to be the brooding vigilante. Instead, he gets to experience a normal family life, but he also realizes the importance of his role in his own universe and takes some valuable lessons back with him.
In the 'natsu meets his parents fanfiction', Natsu may initially be in shock when he meets them. His parents could look exactly like him or have some unique features. They might take him on a journey to a place that was important to their family. Along the way, Natsu could learn valuable lessons about family, love and self - discovery.