Gilgamesh can be portrayed as a powerful and haughty figure. He could walk around the world of Danmachi with an air of superiority, looking down on the 'lesser' adventurers. His flamboyant style and his love for grandeur can be emphasized, like always wearing the most elaborate and expensive armor.
He would likely be portrayed as arrogant. Given his status as a powerful and ancient figure in his original lore, in DxD fanfiction he would probably look down on most of the characters. He would act as if he is above the petty squabbles of the DxD world.
He could be integrated as a powerful enemy at first. He might target the academies because he sees them as places that are trying to control and limit power, which goes against his own philosophy. However, as the story progresses, he could have a change of heart after seeing the selfless acts of the RWBY characters. He could then use his powers to help them against a common enemy like Salem.
Well, it could be. If Percy is in a Gilgamesh fanfiction, it means that the story is likely using the Gilgamesh mythology as a base. Percy could be a new character created within that framework, perhaps having adventures that are related to the themes and stories found in the Gilgamesh epic. It might also mean that Percy has some connection to the original Gilgamesh character, like being a descendant or a reincarnation in the fanfiction world.
In some fanfictions, Gilgamesh's powers are magnified to an extreme. He can control not just the Gate of Babylon but also manipulate time and space more freely. For example, he can create time - loops to his advantage in battles.
One possible story could be that Shiro, as a powerful female, becomes an equal to Gilgamesh. She might use her unique powers to challenge his authority in the fanfiction world. Maybe she has some sort of magic or combat skills that make her stand out. She could start as an unknown figure but gradually gain recognition and respect from Gilgamesh and other characters in the story.
Well, Kirei and Gilgamesh make for an interesting pairing in fanfiction. Their complex personalities can lead to some really intense and thought - provoking stories. Kirei's inner conflict and Gilgamesh's haughty nature can create a lot of drama and tension.
Yes, there are likely some fanfictions out there with this concept. Fanfiction writers often come up with unique crossovers, and the idea of Naruto being related to King Gilgamesh in a fan - created story is not unheard of. You can try searching on popular fanfiction websites like Archive of Our Own or FanFiction.net.
Since 'lemon' often implies sexual content, it's not really a positive or proper aspect to focus on in fanfiction. However, if we were to consider just the Gilgamesh part, it might involve taking the character's proud and powerful traits from the original story and perhaps distorting them in inappropriate ways in such fanfictions.
His personality would be a mix of pride and a sense of superiority. He'd walk around the school as if he owns the place. However, he might also have a sense of honor. For example, if he made a promise to a character in the DxD world, he would keep it, but in his own haughty way. He might also be somewhat dismissive of the school's rules, believing that he is above them.