Leah Burke is a fictional character from the young adult novel series titled Simon vs. the Homo Sapiens Agenda by Becky Albertalli. She is known for her strong personality, artistic talent, and her close friendship with the main character, Simon Spier. Leah is a bisexual character who navigates her identity and relationships throughout the series. In addition to her role in the original novel, Leah is the protagonist of the spin-off book, Leah on the Offbeat. This story explores her experiences in high school, her friendships, and her romantic interests, providing a deeper understanding of her character and challenges.