Mildred Hubble
Mildred Hubble is a major character in "The Worst Witch" children's book series by Jill Murphy. She is the protagonist in all the books. She is friends with Maud Spellbody and Enid Nightshade and has a strong rivalry with Ethel Hallow and Drusilla Paddock.
The Worst Witch
The "best friend" of Ethel Hallow, with whom she is often paired up. Drusilla appears only briefly in "The Worst Witch All at Sea", but her role in the TV series and in the later books increases greatly. Drusilla is a horrible, vindictive bully, but lacks the acid-tongued spite of Ethel, and seems to be in great awe of her. Their "friendship" seems to be more of an alliance or a form of servitude: Ethel and Drusilla are not true friends, they have stuck beside each other because nobody else can bear to be around them. Drusilla seems to have no will of her own. Drusilla does everything Ethel orders her to, and in one book ("The Worst Witch to the Rescue") she steals Mildred's beloved pet tortoise and hides it in a tree. In the TV series, she and Ethel briefly end their friendship when Drusilla sides with Mildred and her friends. They make up at the end of the episode though.