He was portrayed by Jeffrey Tambor.
He was once a school bully to The Grinch as a child, over his shaved chin, which is why The Grinch hated Christmas in the first place.
When The Grinch was invited to the festivities of the Whobilation, Augustus proposes to The Grinch's love interest Martha May Whovier and gives The Grinch a shaver, reminding The Grinch about his childhood, which prompts him to go on a rampage and ruin the Christmas celebrations.
During his burglary that night, The Grinch comes across the sleeping mayor dreaming about Martha. Seeking his revenge, The Grinch makes Augustus kiss the rear end of his dog, Max.
After The Grinch steals the presents for Christmas, Augustus blames Cindy for the incident, but her father, Lou Who, reminds everyone that they have the Christmas spirit in them and that Christmas isn't about presents, so the Whos all sing.
After The Grinch returns the presents, Martha turns down Mayor Augustus's proposal and stays with The Grinch.
Mayor Maywho appears as an antagonist in The Grinch and Dr. Seuss: How the Grinch Stole Christmas, the 2 videogame adaptions of the popular 2000 feature film.