Garwin Chang is a human boy that was in Sophie's high school senior class. He is only mentioned once, in an early scene of Keeper of the Lost Cities wearing a T-shirt stating, "BACK OFF— I'M GONNA FART!"
He was one of the many kids that teased Sophie, noted to be a bully who teased multiple people. After Sophie correctly answered a question from Mr. Sweeney, he whispered to her, "Nice job, Superfreak." He was bitter, having been rejected by Yale, whilst Sophie, much younger, had received a full scholarship. Sophie's parents, however had turned down the offer, not wanting to attract attention.
Quotes
“Nice job, Superfreak.”
—Garwin Chang, in Keeper of the Lost Cities