This is a list of characters who have minor roles in the children's book series The Worst Witch, or its television adaptation.
Appearances in the books: A Bad Spell for the Worst Witch (briefly)
Griselda Blackwood makes her first (and only) appearance in the third book of the series where she is kidnapped by Mildred Hubble so Mildred can take her place at the Halloween celebrations.
Her role in the TV series is greatly increased, along with that of her friend, Fenella Feverfew. Griselda is played by Poppy Gaye.
1998 TV series only
Ruby, along with Jadu Wali, is a TV-only character who doesn't appear in the books. Ruby is depicted as a tall black girl with frizzy hair worn in pigtails and an inventive personality. Ruby is like the mad scientist of the group. She invents a number of whacky inventions that almost always go wrong. She is very loyal to her friends and keen to learn at Cackle's Academy. Like Jadu, she is often dragged along on whatever crazy crusade Mildred and co. are going on, though there are times when she and Jadu are absent (in the episode "The Inspector Calls" she and Jadu are completely absent when Mildred, Maud and Enid are trying to stop Mistress Hecketty Broomhead from closing the academy down and the two have only minor roles in the episode "Power Drill" when Mildred, Maud and Enid are trying to give Miss Drill magic powers). Ruby was portrayed by Joanna Dyce.
Appearances in the books: A Bad Spell for the Worst Witch (briefly)
Clarice Crow is Drusilla Paddock's half-sister and Sybil Hallow's best (and presumably only) friend. Clarice is described as having brilliant orange frizzy bunches. Clarice is very loyal to Sybil and is always there to comfort her when she is upset, like in the episode "The Millennium Bug" she comforts and manages to persuade Sybil to continue playing the clarinet after Griselda Blackwood and Fenella Feverfew mocked the way she played it. Clarice's surname is not revealed in the books, but the TV series gives her surname as "Crow". In the episode "The Lost Chord" Clarice is the one who saves the school from the fake musician who tries to rob the school of its valuables. Clarice was played by Georgia Isla Graham.