Who could be the main antagonist in Albus Potter and the Cursed Child fanfiction?

One possible antagonist could be a dark wizard from the past who somehow catches wind of Albus Severus' time - traveling and decides to use his knowledge of the future for his own evil purposes. Maybe a forgotten Death Eater who was thought to be dead but actually survived in hiding and now sees this as an opportunity to rise again.

One idea could be Albus and Scorpius getting lost in an alternate magical dimension during one of their adventures. They have to rely on their wits and newfound magic to find their way back. Another could be Albus discovering a long - lost family secret that changes his perception of his family's legacy.

It could be a distant relative of Voldemort who has been biding their time in the shadows. They might have a vendetta against the Potter family for what happened to Voldemort. This relative could be secretly gathering followers and planning to strike at the second child when they least expect it.

The gods themselves could be the main antagonists. Since they cursed Percy, they might be trying to keep him in a state of misery or use him for their own purposes.

Another possibility is an ancient evil that has been awakened. This entity might see Hermione as a threat because of her potential power. So it curses her to stop her from growing stronger. In this case, the antagonist would be very powerful and mysterious, and Hermione and her friends would have to do a lot of research and exploration to find a way to defeat it.

It could be a Frost - Witch. She might be jealous of Harry's connection to magic from Hogwarts and wants to use his powers for her own evil plans in the frost - covered land.

The main antagonist could be one of the major gods who cursed Percy. For example, Zeus might be angry with Percy for some reason and decide to curse him. Zeus would then use his power to send all kinds of obstacles and enemies Percy's way. He could manipulate the weather to create storms that target Percy or send powerful monsters after him.

It could be a new dark wizard who is jealous of Harry Potter's fame and success. This dark wizard targets Harry's child, thinking that by causing trouble for the child, they can somehow diminish Harry's reputation in the wizarding world. He might try to frame the child for various dark magic incidents around Hogwarts.

A powerful sorcerer who wants to harness the power of the earth and sky for his own selfish gains could be a great antagonist. He might try to corrupt the natural balance to gain unlimited power.

Rose Granger - Weasley could also be a main character. Given her intelligence and her family's history, she could play a crucial role. She might be the one who discovers some important clues about the servant of Nagini through her research in the Hogwarts library. And she could use her magical skills, which she has inherited from her parents, to assist Albus and others in dealing with the servant.