Ethel Hallow is a fictional character from the children's book series The Worst Witch, created by Jill Murphy. She is a student at Miss Cackle's Academy for Witches and is known for her ambitious and competitive nature. Ethel often tries to outshine her classmates, particularly the protagonist, Mildred Hubble. In the series, Ethel's character serves as an antagonist, frequently causing trouble for Mildred and her friends. Despite her cunning ways, Ethel's character also experiences moments of vulnerability, showcasing the complexities of friendship and rivalry in a magical school setting.