Heather Hills is the main antagonist from the Diary Of A Wimpy Kid - Dog Days. In the movie, she is a female equivalent to Rodrick but even more spoiled. She has a Suite Sixteen party in the movie, she was origionally in love with Rodrick. She responds angrily to Rodrick and his band playing a metal version of "Baby" and her cake is ruined. She also bullies her sister Holly Hills, as Rodrick did to Greg.
In the book, however, she is shown to be going to college and is more mild - mannered. She was Rowleys babysitter and Greg eventually had a crush on her. In the Dog Days book, Greg ends his affection (possibly) when a kid throws up ice cream behind her seat. He makes her pick it up.