Let’s get something straight right off the bat: Your story is about your protagonist. That is, the protagonist is the star. By definition. Even if you have a very engaging and sympathetic antagonist, the reader identifies more with your protagonist’s struggle and desire. If that’s not the case, you have the wrong protagonist.
That’s the first thing to keep in mind when dreaming up and/or depicting your antagonist: the protagonist is the star of the show. The antagonist’s purpose is to serve the author’s goals for the protagonist.
We’ve all heard about the importance of conflict in storytelling. One of my favorite quotes in this regard comes from Charles Baxter, who says, “Only Hell is interesting.” If there’s not trouble in the story, we don’t want to hear about it. That’s not to say we want trouble to win out. On the contrary, when a story has elements of conflict or trouble, they work to expose what’s good and right and true about the protagonists with whom we empathize and sympathize.
But I want to unpack conflict a touch more because it comes in a few different varieties.