One common theme is redemption. Castiel's angel wings can be seen as a symbol of his past as an angel and his journey towards redemption in the stories. His wings might be damaged or lost and then regained as he becomes a better version of himself.
Identity is also a big theme. His wings are part of what makes him an angel, and in these fanfics, he often struggles with whether he wants to embrace his angelic nature with his wings or distance himself from it. This exploration of identity through his wings is quite common.
One popular 'angel wings castiel fanfic' is 'Wings of Redemption'. It delves into Castiel's journey with his angel wings and how they symbolize his connection to the divine and his struggle with his identity in the human world.
Another theme is the symbolism of his wings. Some fanfictions explore how his wings represent his angelic nature and his connection to Heaven. They might also delve into how the state of his wings reflects his emotional and spiritual state, like broken wings when he's feeling lost or damaged.
One common theme is Castiel's struggle with his angelic nature. He often has to balance his loyalty to heaven and his newfound connections with humans.
In many 'harry x castiel angel of death fanfiction', the theme of identity also comes up. Both characters have very distinct identities. Harry is known as a wizard, a hero in his own right. Castiel is an angel with a specific role. When they come together, they often question and redefine their identities. They might start to see themselves in a new light because of their relationship with each other. This exploration of self - identity in the context of their relationship is quite common.
Another theme is self - loathing. In 'castiel depressed fanfic', he frequently blames himself for things that have happened, whether it's his actions in battles or his perceived failures in protecting others. This self - loathing is a big part of his depressive state.
The theme of self - discovery is also prevalent. As a female Castiel, she has to figure out her place in the world, both as an angel and as a female entity. This often involves her coming to terms with her new identity, learning about her powers in a different context, and finding her role in the fight against evil in a more female - centric way.
Reflection is also a big theme. Castiel has a long history, and on his birthday, he may look back on all the things he has been through, the people he has met, and the choices he has made. This can add a lot of depth to the fanfic and make readers understand his character better.
The theme of sacrifice also pops up a lot. Castiel may have to sacrifice his angelic duties or powers for his wife, or the wife might sacrifice her own safety or desires for Castiel. This creates a sense of drama and emotional depth in the stories. For instance, in one fanfic, the wife gives up her chance at a normal life to stay with Castiel in the dangerous world of angels and demons.
There can be a theme of spiritual discovery as well. In some fanfics, his blindness is seen as a way to connect more deeply with the spiritual realm. It can be a way to show that there are other ways to 'see' beyond physical sight, and it adds a really interesting layer to his character.
A common theme is the power struggle. Castiel is often seen as a more 'pure' angel, while Lucifer is the rebellious one. Their interactions are filled with this underlying battle for dominance or influence. Another theme is redemption. Sometimes Lucifer is portrayed as having a chance at redemption, with Castiel being a key factor in that.