Sadie Hawkins was first introduced as the helpless waif featured in Shooting Stars. After Apollo rescues her and a variety of mishaps, Sadie is fostered to a celebrity hero and tutored by that hero's sorceress sister. Eventually, she goes to school at East Lake High School (featured in Kittyelfie's stories about superstrong high school girls) and attends classes part time at the School for the Investigation of the Arcane Arts.
Sadie, naturally, goes through a number changes through the years, including adventures with kitty's characters, coping with the stress of losing her parents, and being made a Little Sister of Alessia Troisi (the heroine known as Tyche).