At the moment of meeting, Hiccup may be stunned into silence for a short while. Then, his natural curiosity would take over. He would start by asking simple things like how the future self got there. As he gets more comfortable, he'd ask deeper questions about his own growth and development. He might also be excited to learn about any new dragon species or technologies that exist in the future. However, he would also be cautious, because he knows that any information from the future self could change his present actions and the future itself.
He would probably be shocked at first. Just imagine seeing an older version of yourself. He might be a bit skeptical too, thinking it could be some kind of trick.
Harry might be a bit skeptical at first. He would question whether this is really his future self or some kind of trick. But as the future self starts to share some personal details or knowledge only Harry would know, he would start to believe. Then, he could become eager to learn from his future self, asking all kinds of questions about his future, his friends, and his role in the wizarding world.
At first, Naruto could be a bit skeptical. He might think it's some kind of trick or illusion. But once he realizes it's really his future self, he would be excited. He would want to know about his future family, if he has one. He'd also be interested in the state of the ninja world in the future. His reaction would be a mix of excitement, curiosity, and a determination to make sure his future turns out as good as his future self's seems to be.
Well, it might be that Hiccup's future self shows up at a crucial moment in the present. He could warn Hiccup about a big mistake he's about to make, like trusting the wrong person. This would then lead to Hiccup re - evaluating his decisions and taking a different path. Maybe it also involves some revelations about his future family and how his actions in the present will affect them.
He would be extremely excited. Goku has always been curious about his parents, so he'd probably have a big smile on his face and lots of questions to ask them right away.
He would probably be overjoyed. James Potter was a loving person, and the chance to meet his son would be a wonderful moment for him. He might immediately pull his son into a big hug and start asking all sorts of questions about his life.
At first, Goku might be a bit shocked. But then, his natural friendly and curious nature would take over. He'd be eager to learn about her, about his family. He could show her all his cool moves and tell her about his friends on Earth. And he'd be really happy to have a family connection that he's been missing all this time.
He would probably be very surprised. Percy might start by trying to convince his younger self that he is indeed from the future. He could also be a bit embarrassed by some of the things he did when he was younger.
At first, it might be a bit tense. Natsu would be full of questions and his future self might be a bit reluctant to share everything. But as they start to talk, they could become more understanding of each other.
Naruto would probably be very surprised. He has heard about Rin from Obito and Kakashi. So when he actually meets her, he might be at a loss for words at first.
Anakin might be shocked at first. After all, he may not have expected to ever meet his father. He could be hesitant and full of questions.