Andi is the main character of Andi Mack. She is portrayed by Peyton Elizabeth Lee. A girl who is about to realize that she can define who she is, when her older sister Bex returns home with a revelation, Andi is left with many questions that jump start her self-discovery. She has her sounding boards and best friends Cyrus and Buffy by her side, and each are simultaneously attempting to understand who they are and how they might fit in the world.