query: Who is the protagonist of Worst Witch?
passage: 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.
passage: List of The Worst Witch characters
Mildred is tall and thin and has long, waist-length, black hair which she wears in two messy pigtails, whereas in "The Worst Witch Saves the Day", Mildred has what Miss Hardbroom calls "a bad hair day", after borrowing Maud's styling brush and getting her hair tangled in it. Ethel chops off the styling brush but then cuts off all of Mildred's hair to hide it. In a false attempt at kindness, Ethel gave Mildred a hair-growth potion which, unfortunately, makes Mildred's hair grow so long and so fast that it practically engulfs the whole school.