In Aesop's fable "The Ant and the Grasshopper," the
main character is the
Ant. The story focuses on the ant's industry and preparedness, and the consequences of the grasshopper's actions are judged in relation to the ant's virtuous behavior.
The secondary character is the Grasshopper. While the story isn't *about* the grasshopper in the same way it's about the ant, the grasshopper's actions drive the plot and provide a contrast to the ant's behavior.