He would become more brooding. As a vampire, he'd have to deal with new emotions like the constant thirst for blood. This would make him more withdrawn from his friends in Camelot at first.
Merlin might become more powerful in some ways. His vampiric abilities such as super strength and heightened senses could change his approach to protecting Camelot. He'd be more of a stealthy protector, using his new powers to silently take out threats. Also, his moral compass might be a bit shaken. The need to feed on blood could make him question his own goodness, but in the end, he'd still strive to do what's right for Camelot.
Merlin might become more confident as Harry Potter. In his past life, he was often hiding his magic, but as Harry, he can be more open in the wizarding world. So he could be more assertive in dealing with challenges.
He might become more confident in his magic. Among the druids, his magic would be accepted and even celebrated. So he could practice more freely and learn new spells and techniques, which would boost his self - assurance. Also, he could develop a stronger sense of community as the druids live in a more close - knit way compared to the hierarchical structure of Camelot.
It would be very complex. Initially, Uther would be in shock. He has been hunting magic - users, and now his son is one. But he might also feel a sense of protectiveness. Merlin, on the other hand, would be confused and angry at being lied to about his identity. Eventually, they might start to understand each other more. Uther could see the good in Merlin's magic and Merlin could see the reasons behind Uther's actions, even if he doesn't agree with them all.
Meeting his father could have made Merlin more confident. Knowing his family background and having his father's presence (even if it was just in the fanfiction) might have given him a sense of belonging. He could also become more powerful, as perhaps his father passed on some knowledge or power to him.
In Merlin elf fanfiction, Merlin's character can develop in many ways. He might become more in tune with his magical side as he interacts with the elves. Since elves are often depicted as having a deep connection to magic, Merlin could learn from them to control his powers better.
Their relationship would likely become more protective. Merlin would be constantly worried about Freya and the baby's safety. He'd use his magic more discreetly to safeguard them from any potential threats.
Their relationship would likely become more complex. They would have to rely on each other more, as they are now bound by the unborn child. There would be a new level of trust and vulnerability between them.
In Merlin fanfiction, fem Harry might become more in tune with the nature - based magic of Merlin's world. Since she comes from a world of more structured spells, she could start to embrace the fluid and often unpredictable magic of Camelot. This change could make her more adaptable and open - minded.
It would become much more complex. They might start off being confused and a bit awkward around each other. But then, as they start to explore their feelings, they could become closer in a more intimate way. Their friendship would be transformed into something deeper, with a new level of understanding and trust.
Their relationship might become more equal in the Hogwarts setting. In Camelot, Arthur was the king and Merlin his servant, but at Hogwarts, they'd both be students. So, they'd have to rely on each other more as equals.