One of the main things is the exploration of his character. When Castiel is an archangel, it's not just about his powers. It's about how his identity changes. Does he still feel the same loyalty? How does he view his purpose now? Fanfics can dig deep into these aspects. They can also show how his new form affects his appearance and how other characters react to this change. This all combines to make the 'Castiel is an archangel' fanfics really interesting.
Definitely. The 'Castiel is an archangel' fanfics are popular among Supernatural fans. They usually offer unique interpretations of the story. For example, they might show how Castiel's new status as an archangel affects his friendship with Dean and Sam. They can also introduce new plotlines and conflicts based on his enhanced abilities.
One popular theme is Castiel's relationship with other characters, such as his loyalty to Dean and Sam. Another is his struggle with his angelic nature and his growing understanding of humanity.
A lot of fanfictions focus on the idea of Castiel being different from other angels because of his connection to the Winchesters. There are themes of forbidden love, like a romantic relationship between Castiel and an archangel which goes against the angelic rules. Also, the exploration of Castiel's true purpose and how it relates to the archangels' plans is a big theme.
One popular plot twist could be Castiel secretly being an archangel all along but having his memories wiped. It adds a whole new layer of mystery to his character. Another could be that he is an archangel in a parallel universe and gets switched with the Castiel in the main universe. This can lead to some really interesting character interactions.
You can try some popular fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfics related to various characters, including Archangel Castiel. Just use the search function on the site to look for specific stories.
The contrast between the reader's ordinary self and the extraordinary world Castiel is from often leads to embarrassing situations. For example, the reader might not understand certain angelic customs and accidentally do something that causes embarrassment. Also, the chemistry between the reader and Castiel can be explored in a unique way when embarrassment is involved. Their interactions can be both cute and awkward at the same time.
Castiel's wings are interesting in fanfic because they are a unique aspect of his character. They are a physical manifestation of his angelic nature. In fanfics, authors can play with the idea of their appearance, like whether they are white and pure or have some tinge of a different color due to his experiences. For example, in some fics, his wings might be a bit darker after he has fallen, which shows his internal turmoil.
One common theme is vulnerability. When Castiel is sleeping, he is in a state where he is unguarded, and fanfics often explore how this vulnerability affects him and those around him.
In the fanfiction world, Castiel being an archangel would bring a whole new dynamic to his relationship with Dean. Dean has always been a bit of a protector of Castiel in a way, but with Castiel as an archangel, the power balance shifts. Castiel might become more distant as he has to deal with archangel business, which could make Dean feel left out. On the other hand, they could also have a deeper understanding of each other. Dean could learn to respect Castiel's new role and Castiel could show Dean that even as an archangel, he still values their friendship and partnership.
You can start by looking on fanfiction platforms like Archive of Our Own (AO3). It has a vast collection of 'Supernatural' fanfics, including those focused on Castiel and the archangels. Another option is Fanfiction.net, though the tagging system might require some more in - depth searching. You could also check out Tumblr blogs dedicated to 'Supernatural' fandom. They often recommend great fanfictions.