A common trait is also being manipulative. The villainess will try to manipulate the situations and the people around her to get what she wants. She might manipulate the male leads by lying about the protagonist or creating misunderstandings between them to drive a wedge in their relationship.
Well, it's not a straightforward yes or no. 'Blonde' might incorporate some factual aspects, but it's likely a blend of truth and creative interpretation to make it more engaging for the audience.
It's hard to say for sure. 'Blonde' could potentially be a mix of real-life elements and creative imagination. You'd have to look into the background and details to determine how much of it is truly based on reality.
It really depends on the specific plot and character development in the manhwa. Sometimes it happens early on, and in other cases, it might take a while.
First, you need to come up with a unique and interesting character design for the villainess. Make her have complex motivations and personality traits. Also, think of a captivating plot that keeps readers engaged.