Yes, there are many. You can start by looking on popular fanfiction websites like Archive of Our Own. There, you'll find various interpretations of Percy as an archangel. Some might focus on his newfound powers and how they interact with the existing story elements. Others could explore his relationships with other characters in this new, celestial context.
In fanfiction, Percy might discover a hidden connection between his powers and the archangel's. Maybe there's a prophecy that links them, and they have to figure out how to fulfill it together. The archangel could teach Percy some new skills or perspectives that are different from what he's learned in the demigod world.
In some Percy Jackson fanfiction, archangels are often portrayed as extremely powerful beings. They might be depicted as having abilities far beyond those of the regular demigods. For example, they could have the power to manipulate celestial energy in ways that are unique to them. Their appearance is usually described in a very majestic way, with glowing auras and large, magnificent wings.
Common themes include transformation. Percy goes from a regular character to an archangel, which is a huge transformation, both physically and mentally. Another theme is the exploration of the divine. What does it mean to be an archangel? How does Percy experience the divine realm? There's also the theme of love. It could be his love for his friends and family still on Earth, or a new kind of love that he discovers in the celestial world, perhaps with other angels or even with a new, otherworldly being.
One common theme is the clash of different mythologies. Since Percy Jackson is based on Greek mythology and archangels come from religious or angelic lore, seeing how these two different systems interact is often explored.
Well, perhaps the archangel and Percy would have a power struggle at first. Percy is used to being in charge in his own adventures, and the archangel has its own set of divine powers and authority. They'd need to learn to work together, like when they encounter a group of mythical creatures that are causing havoc in both their domains.
In some Percy Jackson fanfiction, Archangel Michael is often portrayed as a powerful and otherworldly being. He might be shown as having a strong sense of justice, much like the angels are typically depicted in religious and mythological texts. His powers could be exaggerated compared to his normal depictions, perhaps being able to control celestial forces to an even greater extent in the context of the Percy Jackson universe which is filled with magic and mythical creatures.
Another idea is that there is some sort of prophecy that links Percy and the Archangel Michael. This prophecy could force them to interact, and they initially might be at odds with each other due to their different natures. Percy is a half - blood, used to the chaos and grey areas of the demigod world, while Michael is a pure celestial being. But as the story unfolds, they learn to work together.
One common theme is the idea of power and its control. In Percy Jackson, the demigods have their own powers, in Supernatural the angels and hunters have powers, and Archangels are extremely powerful. Fanfics often explore how these different power sources interact. Another theme is the fight between good and evil. All three have clear concepts of good and bad forces, and fanfictions might bring them together in new battles. For example, the demigods and the Winchesters might join forces against a powerful demon or an ancient evil from Greek mythology.
One great Percy Jackson Archangel fanfiction is 'The Celestial Alliance'. It combines the elements of both universes really well. The characters are well - written and the plot is full of twists and turns.