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.
List of minor The Worst Witch characters
Fenella Feverfew is an unseen character in the book series. She is mentioned several times in the fourth book "The Worst Witch All at Sea" where she transfers to Miss Pentangle's Academy and leaves behind her black cat Ebony (since they have owls at Miss Pentangle's Academy).