Since I haven't read this particular novel, it's hard to say for sure. But I would assume that the villainous woman herself is a main character. There might also be characters who oppose her, like a hero figure or a group of people who uphold the status quo that she is challenging.
Since I haven't read it, I'm not sure. But it might have a villainous husband as one of the main characters, and probably a female lead who is somehow connected to him, maybe his wife.
She could be very cunning. In many'read villainous princess novel', the princess uses her intelligence in a devious way. She might be good at hiding her true intentions and presenting a false image to the public while secretly plotting against her enemies. Also, she may have a sense of entitlement, believing that she is above the rules and norms of society because of her royal status.
Given the title, the main focus would be on the level 99 villainous daughter. But in a web novel, there are usually multiple characters to support the story. There may be her family members who play a role in her becoming a villain or trying to stop her. There could be friends or followers she has, who either support her villainous deeds wholeheartedly or are just using her for their own gain. Additionally, there may be characters from the 'good side' who are constantly trying to thwart her plans and bring her to justice.
The main character is obviously the one who adopts the villainous dad. This character is often portrayed as kind - hearted and brave, willing to take on the challenge of having a villainous figure as a family member.
Sure is. Mysterio in the comics is known for being villainous. His powers of illusion are often employed for nefarious purposes and to oppose the forces of good.
Some cool 'villainous fanfic' ideas include a fanfic where the villain is the main character and we follow their daily life. It could be full of their devious plans and interactions with other characters. There could also be a 'villainous fanfic' that takes place in a parallel universe where the roles are reversed, and the villains are the ones in power and the heroes are the outcasts. Additionally, a fanfic about a group of villains forming an alliance and their power struggles within the group would be quite interesting.
I'm not sure specifically as I haven't read it in detail. But generally, it might be about a female character who is considered a 'villain' at a very high level, like level 99, in the context of a web novel. Maybe it follows her story, her actions, and how she interacts with other characters in the fictional world of the novel.