Well, King Uther Pendragon's story is an important part of the Arthurian cycle. He was a powerful king. His reign was filled with battles and political intrigue. He was known for his great strength and leadership. His relationship with Merlin was also crucial as Merlin often guided him. And as I said before, his encounter with Igraine was a key event that ultimately led to Arthur's birth and the whole Arthurian saga.
One great aspect of Uther Pendragon and Merlin fanfiction is the exploration of their complex relationship. In the original series, Uther is often at odds with Merlin's magic, but in fanfiction, authors can reimagine their dynamic. For example, some stories might have Uther discover Merlin's magic earlier and instead of persecuting him, learn to accept it due to Merlin's selfless use of magic for the good of Camelot.
Some fanfictions also explore the idea of Merlin as a mentor to Uther in a way. Since Merlin has a broader understanding of the world and magic, he could potentially guide Uther towards a more inclusive rule. This flips the traditional dynamic and creates a fresh take on the Camelot story, with Merlin being the one to influence Uther's decisions for the better.
One common theme is redemption. Uther has been so against magic, but in these fanfics, he often has to face his prejudices when it comes to Merlin. For example, he might realize that not all magic is evil through Merlin's actions.
One possible plot could be that Harry discovers his true heritage as the son of Uther Pendragon. He then has to navigate between the wizarding world he knows and the newfound Arthurian legend - related powers and responsibilities. He might face challenges from both sides, like dark wizards in the Harry Potter world who fear his new power, and enemies from the Arthurian realm who see him as a threat or an opportunity.
One popular 'Uther Pendragon x Merlin' fanfic is 'The King's Mage'. It delves into an alternate universe where Uther discovers Merlin's magic earlier and their relationship takes a very different turn. It has a great plot that shows the growth of their bond in a complex political and magical setting.
He'd probably be more confident. Knowing he's the son of Uther Pendragon would give him a sense of noble lineage. He might be more assertive in his actions and decisions, and less likely to tolerate injustice.