Why is the antagonist so important? No antagonist and no story. I think most craft books make a critical error. They assume us noobs know more than we do. Most new writers don’t understand the antagonist the way they need to. We have some hazy basics from high school or college English and then we try to go pro. Then it takes years of trial, error, rejection and therapy to see any success. Um, yeah. Bad plan. The antagonist is critical, and is often one of the most troublesome concepts to master.