Another theme is Gabriel's relationship with his family, the other archangels. Fanfictions might explore the dynamics between him and Michael, Lucifer, or Raphael. Some fics could focus on their past, how they were before the fall, or how Gabriel tries to deal with the family drama that has ensued over the years. These family - centered fics can add a lot of depth to the character of Gabriel and the overall Supernatural lore.
Redemption is also a common theme. Given his complex backstory in the show, fanfictions often delve into Gabriel's journey towards redemption. This could involve him making amends for past actions or finding a way to atone for his mistakes. Writers might explore his relationships with other characters like Castiel or the Winchesters in the context of this redemption arc. It can be really interesting to see how different authors interpret his path to redemption.
Another theme is the exploration of different realms. As Gabriel has the ability to travel between realms, fanfictions often take the soulmate on adventures through different planes of existence. This allows for some really creative and exciting storylines, with the couple facing various challenges in different supernatural settings.
One popular theme is the sister's relationship with her archangel brothers. It could be about her trying to fit into their world or dealing with their overprotectiveness. Another theme is her own powers and how she discovers and controls them in the context of the Supernatural universe.
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.
It really depends on the author's creativity. Sometimes, they discover Gabriel as an archangel when a critical event unfolds, and in other cases, it could be through a series of clues and revelations.
One popular theme is the forbidden love aspect. Since archangels are often depicted as powerful and otherworldly beings, a relationship with a human soulmate can be seen as forbidden. Another theme is the idea of the soulmate bond being able to overcome great obstacles, like the battles and power struggles in the Supernatural universe.
One common theme is the origin story of the 5th Archangel. Writers often explore how this archangel came to be in the Supernatural universe. Another theme is its relationship with the other well - known archangels like Michael and Lucifer.
You can start by looking on fanfiction platforms like Archive of Our Own (AO3). It has a vast collection of Supernatural fanfictions, including those centered around Archangel Gabriel. Just use the search function and type in 'Archangel Gabriel' to filter the relevant stories.
One popular story could be about their adventures together against a powerful new enemy. In the fanfiction, they might have to rely on each other's unique skills. Gabriel with his trickster abilities and Dean with his hunting expertise.
One common theme is power and its consequences. Female archangels often have great power, and the fanfictions usually explore how they handle it, whether they use it for good or are tempted by the dark side of that power.
Family and relationship dynamics are also big themes. How the other characters in Supernatural, such as Sam and Dean, react to Gabriel's situation. It could be a mix of shock, support, or even some initial disbelief. And of course, there could be the relationship with the other parent (if there is one in the fanfic) which can range from a loving partner to a more complicated situation.