Definitely consider including Batman from the DC universe. His detective skills and strategic mind would be a great addition. He would be intrigued by the mystery and power of the Gate of Babylon and would try to analyze it from every angle. His interactions with Gilgamesh would be full of tension as they both are used to being in control.
One possible plot could be a crossover with the 'Fate/stay night' universe. The protagonist from another series could be summoned into the world of 'Gate of Babylon' and has to navigate through its complex rules and power dynamics. They might form an unexpected alliance with Gilgamesh and together face a common enemy that threatens both their worlds.
Hermione might also be a main character. Given her thirst for knowledge and her ability to research, she could be the one to dig deeper into the mysteries of the Gate of Babylon and how it relates to their magic. Maybe she finds ancient texts in the Hogwarts library that hint at the existence of the Gate of Babylon and its significance in their world.
The main characters typically include the OC, who is designed to fit into the world of the Gate of Babylon. They might be a hero trying to master the powers of the Gate or a villain seeking to misuse it. Then, there are the characters from the original story that are relevant to the Gate. For example, the servants who might interact with the OC in various ways, either as allies or opponents. And sometimes, there are other original characters created by the writer that are related to the OC, such as a mentor or a sidekick.
In 'naruto gate of babylon fanfiction', Hinata could be quite popular. Her gentle nature combined with the potential of having access to the Gate of Babylon's powers can create interesting storylines. Also, Kakashi might be a favorite. His experience and cool-headedness can make for great interactions when dealing with the new and strange elements from the Gate of Babylon.
One interesting crossover could be Naruto learning about the Gate of Babylon's treasures and trying to incorporate them into his jutsu. For example, he might use some of the powerful weapons from the Gate of Babylon as a way to enhance his Rasengan, creating a more powerful and unique attack. Another aspect could be a battle between Naruto and an enemy where the Gate of Babylon's abilities are pitted against Naruto's ninja skills. It would be a clash of two very different power systems, making for an exciting read.
One interesting concept could be the unique character creations. In OC (Original Character) fanfictions, the new characters often bring fresh perspectives. They might have distinct abilities related to the Gate of Babylon, like perhaps a new way of summoning or using the treasures within. Another concept could be alternative storylines. Instead of following the main plot strictly, it could explore what would happen if certain events in the Gate of Babylon's lore occurred differently. For example, different power dynamics among the characters due to the use of the Gate of Babylon.
One interesting concept could be the combination of Naruto's world with the Gate of Babylon's abilities. For example, how Naruto characters might interact with the treasures from the Gate of Babylon. It could lead to unique battle scenarios where Naruto's jutsu and the powerful artifacts from the Gate collide.
In a dracule mihawk crossover fanfiction, characters like Naruto from Naruto could be interesting. Naruto's positive attitude and determination could contrast with Mihawk's more stoic nature. Also, Zoro from One Piece. Since Zoro aspires to be the greatest swordsman like Mihawk, their interactions would be full of tension and learning opportunities. Another good character could be Ichigo from Bleach. His dual - nature as a human and a Soul Reaper, along with his own sword skills, would make for an exciting encounter with Mihawk.
Phos from 'land of the lustrous' is an interesting character to include. Their complex character development throughout the original series can bring a lot to a crossover. Another could be Kongou, as their role as a sort of authority figure can create interesting dynamics in a crossover. And characters from other universes with strong personalities, like Naruto from the 'Naruto' universe, can also be great as they can contrast or complement the 'land of the lustrous' characters.
Well, the main characters are bound to be at least some of the RWBY crew. Ruby, being the protagonist of RWBY, would probably be right in the middle of the action in the 'rwby gate of babylon fanfic'. She's curious and always ready for an adventure, so she'd be likely to explore the mysteries of the Gate of Babylon. Weiss, Blake, and Yang would also be important as they are Ruby's teammates and they all have their own unique skills and personalities. Additionally, there could be antagonists or side characters from either RWBY or the Gate of Babylon's lore that could become major players in the fanfic, but without reading it, it's hard to say for sure who else would be a main character.