The antagonist in the story "Wiley, His Mother, and the Hairy Man" is:
“Mama is the antagonist because she finally wins the fight against the Hairy Man”.
Step-by-step explanation:
An antagonist is a person who goes against the main force and changes it over a course of time.
In the mentioned story, it is Wiley’s Mama who keeps telling him how to keep changing the hairy man into various forms and then finally wins at her own game.