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.
The theme of forbidden love also appears. Given that Voldemort is the ultimate evil and Hermione is on the side of good, a relationship between them is highly taboo. Fanfictions often play with this idea, showing how they might be attracted to each other despite their opposing natures. This can lead to a lot of internal conflict for both characters as they struggle with their feelings in the context of their respective moral standings.
It could be Bellatrix Lestrange. She was one of Voldemort's most loyal followers and was quite obsessed with him. It's not hard to imagine in a fanfiction world that she might have had some sort of relationship with Voldemort that led to the birth of a baby.
One possibility could be that the baby is a result of some dark magic experiment. Maybe Voldemort created the baby as a new vessel for his soul, more powerful than his previous Horcruxes. The story could then revolve around the baby growing up under the influence of Voldemort's followers, who see it as the future of the Dark Lord's reign.
In 'Harry Potter Lord Voldemort fanfiction', the theme of manipulation is quite common. Voldemort is a master manipulator in the books, and fanfictions show how he manipulates others to do his bidding. The theme of prophecy also appears often. Since the prophecy about him and Harry was important in the original series, fanfictions may play around with different prophecies related to Voldemort. And the theme of fear is there too. Voldemort instills fear, and fanfictions might explore how that fear affects the wizarding world in different ways.
Well, in some Bella and Lord Voldemort fanfictions, the focus could be on their backstories and how they came to be so loyal to each other. Maybe it delves into Bella's early life and how she was drawn to Voldemort's ideology. It could also show Voldemort's perspective on Bella, perhaps seeing her as more than just a follower but as someone with unique abilities that could be useful in his grand plan. There might be a fanfiction where Voldemort decides to train Bella in some ancient and dark magic, which then changes their relationship in unexpected ways.
Fanfiction.net is a great place to start. It has a large collection of fanfictions, including those about Bella and Voldemort. You can use the search function to narrow down your options based on ratings, word count, and genre.
A 'Harry Potter writes to Lord Voldemort' fanfiction might show Harry at his most desperate. He could be trying to negotiate for the safety of his friends and the wizarding community. In the letter, Harry might remind Voldemort of their shared past, like how they are both orphans, in an attempt to create some sort of connection or empathy between them.
There's 'Shadows of the Dark Lord'. This fanfiction delves into the idea of Hermione being captured by Voldemort and instead of being immediately killed, he becomes intrigued by her knowledge and power. It's a very dark and intense read. Also, 'Redemption's Edge' is a story where Hermione attempts to redeem Voldemort, and it shows their relationship evolving in unexpected ways as she tries to reach the good in him.
His origin story made him a bitter and power - hungry character. Growing up without a father and with a mother who died early, he felt alone and rejected. This led to his hatred for Muggles and his drive to prove himself as a powerful wizard above all others.