Aspects- The writer should make the hero with character vulnerability and we should feel empathy/sympathy for them. We need to connect on an emotional level so when the villain shows up we feel for the hero. This draws interest to the protagonist.
By giving the protagonist danger and situations it helps us relate to them. Give them barriers, detours, step backs- just don’t make it easy for them. The story does not have to have a happy resolution but it needs to be solved.
Do the following exercise for the villain you have in your story.
Writing Exercises for Part Two: Building Villains
1-Create a character who is an Antagonist, and explain why he or she fulfills that function.
2-Create a character who is an Influence Character, and explain why he or she fulfills that function.
3-Create a character and describe how you would make him or her the Second Most Central Character.
4-Create a character who is a Bad Guy and describe why.
5-Create a classic Villain type, and describe ow he or she is possesses of all four essential qualities of a Villain.
6-Turn this Villain character you have created into a non-villainous person, while maintaining his dramatic function as a Villain.
How to Create a Credible Villain in Fiction
Make your villain three-dimensional. Give the villain a back story or tell a part of the storm from his POV. You want the readers to get a clear picture of the villain and his evil nature.
Consider his motive. Fiction readers are not going to believe a villain who has no clear motive for his actions. His motive can be something from his past or a conflict that arose between him and the hero.
Write the villain around his possible psychological profile. For example, if you want to make him a sociopath, give him characteristics that fit in with this depiction.
By doing this, your villain should be able to help your hero move the story along.