Maybe it's a completely new character created for the fanfiction. This new character could be from a far - off land, with a different kind of magic that Voldemort is interested in. Their marriage could be a way for Voldemort to gain access to that new magic or territory.
As a girl in fanfiction, Voldemort would face challenges like having to adapt to a different body. Her magic might be affected by the transformation too. She'd also have to deal with the fact that her Death Eaters may have different reactions to her new form. Some might be less obedient or more overprotective. Plus, she would need to re - establish her reputation as a feared figure in a world that now sees her as a female, which could be quite difficult considering the gender biases in the wizarding community.
Yes, in the vast world of fanfiction, there are all sorts of wild and creative ideas. Some fans might create a story where Harry Potter is the son of Lord Voldemort for the sake of exploring an extremely different and dark take on the original story. It's a very unconventional concept that goes against the canon, but that's the beauty of fanfic, it allows for such radical re - interpretations.
Lord Voldemort was born Tom Marvolo Riddle. His mother, Merope Gaunt, used a love potion on his father, Tom Riddle Sr. Once she became pregnant and the potion's effect wore off, his father abandoned them. Merope died soon after giving birth, leaving Tom in an orphanage. At Hogwarts, he showed great magical talent but also began to explore the Dark Arts. His hatred for his Muggle father and his desire for power led him to split his soul into multiple Horcruxes, gradually transforming into the evil Lord Voldemort.
One idea could be exploring Voldemort's early years before Hogwarts. Maybe show how his muggle father's abandonment affected him deeply and led to his hatred. Another could be a fanfic where Voldemort tries to redeem himself in some way, which would be a huge twist on his character.
Focus on Voldemort's emotions. Most often he is portrayed as just evil, but showing his insecurities, his fears, and his desires in a more nuanced way can make your fanfic stand out. For example, his fear of death could be explored in greater depth.
Redemption is also a theme. Many of these fanfictions explore the idea of whether the son can break free from his father's evil and find a way to be good. For example, he might use his power for good instead of evil. This shows the power of choice and the potential for change. It's like a battle between nature and nurture. He has the blood of Voldemort, but can he rise above it? That's what makes these stories so interesting.
Lord Shadow's true appearance was Great Grandmaster Sigu Jian's younger brother, the son of the former Dongyi City Lord. He was saved by Chen Pingping and became Chen Pingping's chief guard. The Shadow had always worn a mask and had never shown his true face because he harbored hatred and hoped to take revenge on Sigu Jian, who had killed his loved ones. The true identity of the shadow had always been a mystery in the play.
In " Celebrating Years," the Shadow Lord's true appearance was the younger brother of the Great Grandmaster Sigu Jian. The Shadow always wore a mask in the play and never showed his true face because he harbored hatred and hoped to take revenge on Sigu Jian, who had killed his loved ones. The true identity of the shadow had always been a mystery in the play. No one had ever seen his true face.
In " Celebrating Years," the true appearance of the Shadow Lord was the younger brother of the Great Grandmaster Sigu Jian. He was the son of the Dongyi City Lord. He had been saved by Chen Pingping and became his chief guard. The shadow had always been wearing a mask and did not show his true face. He had a deep hatred for Sigu Jian and was determined to kill him with his own hands. The shadow had always maintained a mysterious identity in the show, and it was not until the second season's final photo that his true identity was revealed. Thus, in " Celebrating Years," the true appearance of the Shadow Lord was the younger brother of the Great Grandmaster Sigu Jian.