on Writers Helping Writers:

A common mistake I see in client manuscripts is a cast of secondary characters that simply exist to help or to outright block the protagonist. They’re either ready, willing, and able to drop everything to help that protagonist reach their own goal. Or they’re a character who is out to make the protagonist’s life hard for no logical reason.

Let’s face it. That’s not how real life works, as everyone has wants and needs of their own. Fictional secondary characters are no different. Their relationship with your protagonist should work like sandpaper, revealing internal growth your protagonist needs, or revealing their commitment to reaching their external goal. If we craft our secondary characters well, they should create a tug-of-war inside the reader. Readers should empathize with each secondary character’s inner motivation and struggle with who to primarily cheer for. This applies to antagonists every bit as much as it does to an ally. Conjuring empathy for each and every secondary character makes those characters more engaging, and it forces you as the writer to create the most compelling protagonist possible. Your protagonist’s desire to reach a particular goal fueled by unmet inner need will have to work that much harder to earn that top spot in reader’s hearts because you’ll have crafted compelling contenders, vying for that spot.

Let’s talk about three ways to achieve this…