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.
Well, Comic Con is typically run by a combination of convention organizers, industry experts, and volunteers who have a passion for comics and pop culture. They handle everything from booking guests and managing the venue to coordinating activities and ensuring the smooth operation of the event.
Yes. The story was inspired by the author's own life and the events and relationships he encountered, making it a true account to a large extent. However, some artistic liberties might have been taken for literary purposes.