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.
Wyrd Sisters
"Wyrd Sisters" features three witches: Granny Weatherwax; Nanny Ogg, matriarch of a large tribe of Oggs and owner of the most evil cat in the world; and Magrat Garlick, the junior witch, who firmly believes in occult jewelry, covens, and bubbling cauldrons, much to the annoyance of the other two.