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 The Worst Witch characters
In "The Worst Witch All at Sea" she sneakily brings Tabby, her bumbling tabby cat along to Grim Cove with her, instead of her new, ordinary black cat Ebony.