One common theme is the exploration of their relationship. It could be about how they fall in love or how they support each other through difficult times. Another theme is the discovery of new powers or abilities. In many fanfictions, either Bella or Marcel or both gain new powers and they use them to protect each other or their world.
I'm not sure exactly. It depends on the series and how it's been published. You might have to check with the publisher or a dedicated comic database for an accurate count.
The unique relationships. In Marcel Gerard OC fanfiction, the interactions between Marcel and the original character (OC) can be very different from the canon. It can explore new emotional depths and character dynamics that we don't see in the original story.
The plot could involve Marcel having a crisis where he realizes that his biological family has let him down in some way, and Klaus, who has been there for him in many situations, becomes the person he looks to as a father. Maybe Marcel gets into trouble with other vampire factions, and Klaus is the one who steps in to save him, leading to this newfound father - son relationship.
One idea could be Marcel going on a grand adventure outside his usual habitat. Maybe he meets other unique shells or small creatures and they form an unlikely friendship. He could discover new places and have to overcome little challenges along the way, like crossing a big puddle or climbing over a pebble hill.
Yes, there are likely to be such fanfics. Fanfic writers often explore unique relationships in their works, and the idea of Marcel calling Klaus 'dad' can add an interesting dynamic to a story. You can try searching on fanfic platforms like Archive of Our Own or Fanfiction.net.
To find a mate in the novel Zoey and Marcel, one way could be through chance encounters that lead to deeper connections. Another possibility is through mutual friends introducing them to each other. Sometimes, shared hobbies or activities can also bring the characters together.
The number of volumes in Marcel Proust's novel can vary depending on the edition. But typically, it's a multi-volume work, usually around seven volumes.