The Worst Witch
Mildred "Millie" Hubble is the protagonist of the series. She is a good-hearted, but bungling young witch-in-training, who never seems to get anything right. She is friends with Maud Spellbody and Enid Nightshade and has a strong rivalry with Ethel Hallow. It is Miss Hardbroom, her potions teacher, who calls her "The Worst Witch".
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.