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.
Monster Bobby
In 2001, when Monster Bobby was just Bobby Barry, he starred in "Weirdsister College", the spin-off series of "The Worst Witch", in which he played the mysterious Nick Hobbes. Prior to that he featured in the film "New Years Day" as Stephen, directed by Suri Krushnamma and released in 2000.