One common theme is jealousy. Draco is often shown as a jealous character when it comes to the OC. For example, if another male character gets too close to the OC, Draco will act possessively. Another theme is protection. He feels the need to protect the OC from various threats in the wizarding world, which is a way of showing his possessiveness. And there's also the theme of exclusivity. Draco wants the OC all to himself and doesn't like sharing her attention with others.
One great 'possessive Draco Malfoy OC fanfiction' is 'The Malfoy Heir's Obsession'. In this story, the OC character is a strong - willed witch who catches Draco's eye. Draco's possessiveness is shown through his actions of always wanting to be near her and getting jealous easily when other guys are around. Another one is 'Bound to Malfoy' where the OC has a special power that Draco wants to keep to himself.
One common trait is jealousy. Since he's possessive, he'll likely be jealous when the OC interacts with other people. Another trait is over - protectiveness. He may see himself as the OC's protector because of his Veela instincts. Also, he might be controlling, trying to dictate what the OC can and can't do.
Common themes in Draco Malfoy fanfictions include family dynamics. His relationship with his parents, especially Lucius and Narcissa, is often explored. Another theme is the struggle between good and evil. Draco was on the 'evil' side initially, so many fanfictions show his internal battle between following the dark path or choosing a different, more positive way. Also, there are fanfictions that focus on his academic life at Hogwarts, such as his performance in classes and his relationships with professors.
Well, the theme of redemption often comes up. Since Draco has had a somewhat dark past in the original series, the pregnancy can be a catalyst for him to seek a better path. Also, the theme of love and support is common, whether it's from a romantic partner or his friends.
In many OC (Original Character) fanfictions, a possessive Veela Draco Malfoy can be a really interesting concept. A Veela Draco might be possessive because of his Veela heritage which often comes with strong emotions and a sense of territoriality. The OC in the story would have to navigate this possessiveness. It could lead to a lot of tension and drama in the plot, like when the OC wants to have her own life and friends but Draco's possessiveness gets in the way.
Love against all odds is also a popular theme. Given Draco's family background and his initial allegiance in the 'Harry Potter' story, a relationship with an OC would face many difficulties. Fanfics often explore how they overcome these obstacles, like dealing with the disapproval of his family or the differences in their social status within the wizarding world. Additionally, friendship is a key theme. Before any romantic feelings develop, they might start as friends or at least form an unusual alliance, which then paves the way for a deeper relationship.
There are several common themes. The power of forgiveness is one. Given their differences, fanfictions might show how Sirius could forgive Draco for his past actions or how Draco could forgive Sirius for any preconceived notions. Another theme is the exploration of the wizarding society from their different perspectives. Draco, as a Slytherin, and Sirius, as a Gryffindor, have different views on the social hierarchy and magical traditions, and fanfictions often explore these differences.
Friendship or romance is also a very common theme. Despite their animosity in the original books, many fanfictions explore the idea of them becoming friends or falling in love. This could involve a slow - burn relationship where they gradually overcome their prejudices and start to care for each other deeply.
Redemption is another big theme. Draco's family was involved with the Death Eaters, and fanfictions like to show his journey to be a better person with Ginny's influence. She can be the catalyst for his change. There are also stories about them defying the expectations of their respective houses, Gryffindor and Slytherin.
One common theme is the struggle against tradition. Draco, coming from a pure - blood family, has certain expectations placed on him. The OC often challenges these traditional pure - blood values. For example, they might have different views on Muggle - born wizards, which causes friction at first but also leads to character growth.