Mildred Hubble (Georgina Sherrington/Bella Ramsey)
The leading character, the "worst witch in the entire school". She's known for being clumsy, unlucky and not very good at spells. Despite this, she has plenty of friends and shows some brilliance with magic when the occasion calls for it. The 1998 TV series implies that Mildred is actually from a non-witch family, explaining some of her ineptitude, while the 2017 series makes this explicit, with Mildred completely inexperienced at anything relating to magic and characters unable to account for her possessing powers in the first place. Season 3 of the 1998 show, however, reveals that she has a rare gift of making drawings come to life. Some modern interpretations have suggested that she has dyspraxia.
- Acrophobic Bird: She's a witch that's afraid of heights and the dark. But amusingly loves spiders.
- Beauty, Brains and Brawn: Is the Beauty in her trio with Maud and Enid. She's the one that gets the most love interests.
- Beware the Nice Ones: Threaten Millie's friends or the school and you will be sorry.
- Butt-Monkey: She is rather unlucky.
- Cool Loser: Unusually for this trope, she's pretty popular and has loads of friends. Her rival is a straight-A student with no friends.
- Corpsing: In-universe, she's prone to bursting into fits of giggles when she really shouldn't be laughing. This gets her into trouble on several occasions.
- Crouching Moron, Hidden Badass: Especially in the first book, where she goes from being humiliated in front of hundreds of people to turning an entire army of wicked witches into snails.
- Cute Clumsy Girl: She's endearingly accident-prone. Part of it comes from never remembering to tie her shoelaces properly.
- Disappeared Dad: In the 2017 series, it's revealed that Mildred's father is not around. Her mom tells Mildred the two lost touch before she found out they'd be having a baby. As a result, he isn't aware of her. It's left open that they might get into contact in the future though-her mom says they can try to find him when Mildred wants.
- Dude Magnet: Gets the most love interests or admirers of any girl in the series.
- Establishing Character Moment:
- In the 1998 series, her Butt-Monkey status is established straight away; she's introduced as the only witch who's walking to Cackles and carrying her broomstick, as opposed to all the other young witches who are flying theirs. She's clearly lost in the forest and struggling to find her way... and as she climbs over a fence we get a close-up of her undone shoelaces before she loses her balance and falls on her butt.
- In the 2017 series, we get a clear grasp on her artistic nature, her kindness and her clumsiness from the start: We see her in her apartment, where she is splitting her attention painting a watercolor of her view of Cackle's in the distance, and preparing to surprise her mother with breakfast in bed. And then when she sees witches fly by on broomsticks, she gets so startled she drops the breakfast tray on the kitchen floor, making a mess and waking her mother.
- Freudian Trio: The Ego to Enid's Id and Maud's Superego.
- Friend to All Living Things: She's known for loving animals in general - including spiders. This is mainly in the books but does come up a couple of times in the TV shows as well.
- In the 1998 show, she "adopts" the three bats who roost in her bedroom, naming them "Winky, Blinky and Nod."
- In the 2017 show, she is shown to be good with animals several times; Maud even comments on it.
- When answering fan questions, Jill Murphy even predicted that as an adult, Mildred would be working at an animal shelter.
- Genius Ditz: Despite being a clumsy girl who fails a lot of her classes, she does know her stuff.
- Girlish Pigtails: Her signature look. In the spin-off, she cuts them off as part of an Important Haircut.
- Good Is Dumb: She's frequently too trusting of Ethel, especially in early episodes.
- Heroes Love Dogs: In the books, and in the 2017 series, she ends up adopting a dog which she names Star, and which she ends up allowed to keep in addition to Tabby.
- Honor Before Reason: Small mischief-making aside, Mildred will do what she thinks is right, no matter how many people point out to her how illegal and/or what a plain bad idea it is.
- Horrible Judge of Character: She's rather easily manipulated by the likes of Ethel, Drucilla and later Hobbes by being too quick to trust them.
- Inept Mage: Played with. She's horrible at classes and is always getting into trouble. But she's shown to have no problems casting spells in the 'field'.
- Kind Hearted Cat Lover: To the degree that having her poor Tabby taken off her is heartbreaking.
- Muggle Born of Mages: Inverted. She's said to be from a non-witch family but has definite magical talent herself. In the 2017 show, she is revealed to be descended from the witch Melissa Hubble, who in order to save Cackle's, had to give up her magic, as well as the magic of her descendants for twelve generations. Mildred is generation thirteen, and as such was born with magic powers, long after her family had forgotten that they used to be magical.
- New Powers as the Plot Demands: The Season 3 finale reveals that she has the rare gift of being able to make drawings come to life.
- Nice Girl: Mildred is kind, sympathetic and trusting (not always to her own advantage) and will readily come to the aid of others in need.
- Plucky Girl: Despite being not good at schoolwork, she'll readily help her friends out if they need her - and she'll challenge any wicked witches that threaten the school.
- Romantic Two-Girl Friendship: With Maud, who she is easily closest to during her time at Cackle's. Especially clear in the 2017 TV show, where a huge reason why she wants to go to Cackle's in the first place is because Maud is there.
- She Cleans Up Nicely: When she plays Cinderella in the school play.
- Single Woman Seeks Good Man: Her two love interests in college are Ben and Hobbes. The latter is a rather dark character and Millie is actually turned off by his bad boy tendencies - and ultimately chooses Ben.
- Technician vs. Performer: The Performer to Ethel's Technician. She has a big imagination and that's her biggest strength in spell casting.
- Trademark Favourite Food: Pizza, so naturally she's overjoyed when Cackle's allows it to be served on Saturdays.
Maud Moonshine/Spellbody (Emma Brown/Meibh Campbell, Megan Hughes)
Mildred's best friend and partner in crime. Known for standing up for Mildred against both Ethel and even the teachers at times. It's established several times that Maud is one of the better students at Cackle's, and she frequently comes in second to Ethel. Note: her last name was not given in the books until the fourth, where she's called Maud Spellbody. But 'Moonshine', which the 1998 TV series gave her, is accepted as her Canon Name.
- Adaptation Personality Change: Downplayed. She's got pretty much the same character traits throughout the various adaptations, though different parts of her character is emphasised in the different adaptations. She's a little brattier in the books, in the 1998 TV show, she's more soft-spoken (though she does have her moments), and in the 2017 series she's an Adorkable, nerdy girl with a bit of a temper.
- Adaptational Attractiveness: She's a plump girl in the books and 2017 series but played by a very cute and slender actress in the 1998 TV series.
- Adorkable: In the 2017 series. Her nerdiness and giddy awkwardness is played up slightly, and she has a lot of adorably awkward moments, particularly when she's nervous about something.
- Alliterative Name: 1998 TV series only, as her last name in the books and the 2017 series is Spellbody.
- Beautiful All Along: A small case between Books 2 and 3. She was made to go on a diet by her parents and shows up at Cackle's notably slimmer - also with longer hair in a different style. This isn't in the TV series, as her actress is already quite cute.
- Beauty, Brains and Brawn: Is the Brains in her trio with Mildred and Enid. She usually gets better marks than them.
- Blind Without 'Em: An occasional plot point in the 2017 series.
- In the first episode it's Maud losing her glasses while broomstick flying that causes her to crash into an unsuspecting Mildred because she can't see where she's going.
- In the third episode, when Maud and Mildred end up swapping appearances, Maud has some problems because while she has Mildred's appearance and clothes, she still has her own poor eyesight — and since Mildred doesn't wear glasses, this means Maud can hardly see.
- Cute Witch: Particularly in the 1998 series, where she's the smallest of her friends and thus the one most likely to provoke a Moe reaction.
- FaceHeel Turn: Briefly. When Mildred has to show Enid around, she gets jealous and cuts their friendship off. She regrets it immediately and hates hanging around with Ethel. But she doesn't make things up with Millie until the end of term, when she saves her and Enid from getting into trouble.
- Friendship Moment:
- In the pilot of the 1998 series, she is the first to run over to help Mildred when she crashes into the bins. Even when Miss Hardbroom orders the other girls back into line, Maud continues helping Mildred. She also checks in on her later. At the end of the episode, she stands up to the teachers when they try to fail Mildred for being nervous.
- In the pilot of the 2017 series, she has a platonic Meet Cute with Mildred while trying to get to Cackle's, and afterwards she stands firmly by her, doing her utmost to get Mildred to be allowed to attend Cackle's too, defending her against Ethel and standing up for her in front of Miss Hardbroom. She passes it off as a Because You Were Nice to Me thing, but she really goes above and beyond everything to help Mildred throughout.
- Freudian Trio: The Superego to Mildred's Ego and Enid's Id.
- Girlish Pigtails: A variation to Mildred's. In Book 3 she has them like Millie's as part of a Beautiful All Along moment.
- Green-Eyed Monster: She does seem to get a bit jealous whenever Mildred shows interest in a boy or spends too much time with someone else. She also gets very jealous when Mildred's art project turns out to be better than hers.
- Meganekko: More so in either TV series, as her cuteness is played up more.
- The Other Darrin: In the 2017 series, she is played by Meibh Campbell in the first season and Megan Hughes in the second season. This is explained as the result of a game of magical hide-and-seek with her cousin. "I thought he'd never find me with a different face."
- Romantic Two-Girl Friendship: With Mildred. It's present in every incarnation, but especially in the 2017 series. The business with Enid reads more like a Friend Versus Lover plot.
- Smart People Wear Glasses: Downplayed, as her intelligence usually isn't thrown out there. But she is a very bright young witch, frequently comes in second place to Ethel, and she is chosen for a masterclass with the Grand Wizard when Ethel isn't allowed to go. In the 2017 series she even becomes Head of her year due to coming in top at the entrance exam (or as Miss Hardbroom puts it, she was "the least worst").
- Trademark Favourite Food: Chocolate, and she wistfully describes a cafe where her father took her on weekends.
Enid Nightshade (Jessica Fox/Tamara Smart)
A new student who joins Cackle's in the summer term of Mildred's first year. She appears shy and withdrawn but when Mildred is tasked with showing her around - she sees how mischievous Enid actually is. As such, she frequently lands Mildred and friends in trouble. Makes one rather sad appearance in Weirdsister College.
- Adaptation Dye-Job: In the books she's described as having hair the colour of milky tea. In the 1998 series she's a brunette, and in the 2017 series her hair is black.
- Beauty, Brains and Brawn: Is the Brawn in her trio with Maud and Mildred, due to her prankster nature and disregard for the rules.
- Characterisation Marches On: Her mischievous ways disappear after the second book. But in the TV series they remain.
- Class Clown: She loves to joke around and make people laugh; she also knows a lot of spells that are used mostly for pranking others.
- Deadpan Snarker: She'll usually have a sarcastic comment or two.
- Embarrassing Middle Name: In the 2017 series, she insists that "Trouble" is her middle name... before confessing to Maud and Mildred that actually it's "Elvira."
- Fearless Fool: Enid has no fear or respect for anything, and will leap in where angels fear to tread without a single moments' hesitation. It does lead her (and Mildred) into a lot of trouble, but she also has a lot of fun.
- Freudian Trio: The Id to Mildred's Ego and Maud's Superego.
- The Friend Nobody Likes: Occasionally slips into this, as her desire to break the rules irritates the others.
- Growing Up Sucks: In Weirdsister College it's revealed she got thrown out of her last college for partying too much. She and Mildred realise that they've grown apart and Mildred has to give up her friendship with Enid as part of a spell — though they both take some comfort in the fact that there's nothing that stops them from starting a new friendship later on.
- Hard-Drinking Party Girl: Has become one in Weirdsister College, though the "hard drinking" part is hinted at more than stated.
- Hollywood Tone-Deaf: Done on purpose during Miss Bat's class. She deliberately sings out of tune, reducing Mildred to hysterical laughter.
- Huge Schoolgirl: The narration says that although Enid isn't fat, there seems to be rather a lot of her. This is just the books, as both the actresses who play her in the two TV series are quite petite.
- I Just Want to Have Friends: In the 2017 series, she's been expelled from seventeen witch schools for causing trouble, and is all set to cause so much trouble that she'll get thrown out of Cackle's as well. What makes her change her mind is the friendships that grows between her and Mildred, and eventually Maud; the prospect of actually having friends at school is enough to make her tone down her behavior so she'll get to stay.
- Jerk with a Heart of Gold: She does actually apologise for getting Mildred in trouble - even if she continues to obliviously do so afterwards.
- Karma Houdini: Never actually gets caught for all the trouble she put Mildred through. Also in "Alarms and Diversions" she's not in trouble for casting the whirlwind - probably because it was Ethel who magnified it and put the school in danger.
- Like Parent, Like Child: In the 2017 series, she is revealed to have inherited her mischievous ways and talent for trouble from her father, who at one time made the Grand Wizard's trousers disappear for a bet.
- Lovable Alpha Bitch: Enid has some Alpha Bitch tendencies but is quite loyal to her friends.
- Perky Goth: She's given herself a Goth makeover by the time she appears in Weirdsister College.
- Race Lift: In the 2017 series, she's black.
- Sad Clown: It's very subtle, though there are the occasional hints that Enid might not be quite as carefree as she likes to pretend, and that at least part of her constantly getting into mischief is a cry for attention from a lonely girl who's afraid she doesn't have any friends. In the 2017 series, it's especially blatant in her debut episode when her worst acting out happens after her parents have left without saying goodbye, and again in the second season where she deliberately gets into trouble in the hope that her very busy mother will come and see her.
- Shrinking Violet: Appears to be this. When she first meets her, Mildred thinks that she'll get no fun out of her. Be Careful What You Wish For. This is completely averted in the 2017 series, where she belongs to a rich and famous family and her entrance to the school is quite spectacular, including fireworks, explosions and an almost rockstar-like attitude from her parents.
- Toxic Friend Influence: Due to misunderstandings there are times when the teachers think Mildred is this to her. Though in the 2017 series it's on one point turned around and she's accused of being this to Mildred. It's not completely unfair, but she really does love her friends and tries her best to help them out.
- Troll: Sometimes.
- Zany Scheme: She'll occasionally try to pull one off, though her success rate's rather abysmal.
Ethel Hallow (Felicity Jones, Katy Allen/Jenny Richardson)
The school's resident Rich Bitch and Alpha Bitch. Ethel comes from a prestigious family of witches, meaning she has a lot of standards to live up to. As a result, she's always top of the class - and lets everyone else know it. She hates Mildred and delights in tormenting her, often trying to get her thrown out of the school.
- Academic Alpha Bitch: Ethel is always top of the class and effortlessly performs spells and potions. However she's also rude, snobby and has no friends.
- Adaptational Villainy: In the 1998 TV series. While the Ethel of the books was absolutely not a nice person, the Ethel of the series is notably more cruel. One occasion is the adaptation of the fourth book. There Ethel only pushed the boat out to sea because she thought Mildred was going to look for the treasure. In the TV series she pushes the boat out because she knows Tabby is on board (she didn't know about the cat in the book).
- Always Someone Better: In the 2017 series she's constantly outperformed by her older sister Esmerelda, and is always trying to prove that she's the more talented one. It seldom works, because Esmerelda is always that much better than her.
- Annoying Younger Sibling:
- Sybil is this to her, to the degree that Ethel magically changes her appearance so no one will think they're related.
- In the 2017 series, Ethel herself is an Annoying Younger Sibling to her older sister Esmerelda.
- Attention Whore: Ethel does love to show off her knowledge.
- Baleful Polymorph: In Book 1 she's turned into a pig by Mildred. Even more so when it happens in the TV series, as she runs off and gets turned into a duck as well.
- Big Brother Bully: To Sybil in the TV series. To the point where Sybil looks to Millie for inspiration instead.
- Blondes Are Evil: In the 2017 series — though "evil" is stretching it a little, she's definitely haughty, snobbish, scheming and self-centered. Contrasted with her sisters, who are also blonde and a lot friendlier.
- Brainy Brunette: A rare villainous case in the 1998 series. But since Mildred, Maud and Enid are also brunette, it's not that notable.
- Child Prodigy: She gets every spell right and already knows how to fly by the time she starts at Cackle's. She's almost always top of the class.
- Daddy's Girl: As shown when her father visits the school.
- Deadpan Snarker: Especially in the 2017 series, where her remarks can be acidic.Maud: [The Hypnapillion] feeds off people's minds, fears, imaginations. Whatever you do, you mustn't look at one! It has sent Miss Mould into a semi-conscious, dreamlike state!
Ethel: She's an art teacher. How can you tell?
- Deceptive Legacy: In the 2017 series, Ethel is crushed to learn her ancestors are not the powerful witches as she was taught. The Hallows are actually a long line of malicious tricksters who lied to pass themselves off as talented.
- Disproportionate Retribution:
- Ethel enchants her broomstick to buck Mildred off and humiliate her in front of the entire school and Grand Wizard - all because Millie turned her into a pig briefly (at Ethel's own request). In the TV series there's also her being annoyed that Mildred was chosen to play the lead role in the Halloween tableau.
- In the 1998 TV series, her entire dislike of Mildred seems to stem from Millie knocking her off her broom by throwing a branch at her on the first day of school. This was after Ethel had refused to give Mildred a lift to the school, when she was lost and on the verge of being late, because Ethel didn't want to look bad in front of the teachers.
- And again, she turns Mildred into a frog because Millie said her sister was acting like a weed.
- Do Wrong, Right: When she's turned back from being a pig, she first yells at Mildred for not getting the frog spell right.
- Evil Cannot Comprehend Good: Calling Ethel 'evil' might be a stretch as she's mostly just arrogant and petty, but this becomes particularly relevant in the third season of the 2017 series, when she attempts to perform a 'good deed' by exposing a mistake made by Mildred and creating a threat against Cackle's simply so that she can stop it, failing to recognise the difference between her actions and Mildred's genuinely good deeds.
- Evil Is Petty: "Evil" is too strong a word, but pettiness is Ethel's worst trait. She'll maliciously antagonize anyone, especially Mildred, for the slightest offence — real or perceived.
- Freudian Excuse: In the 2017 series she's desperate to win the approval and affection of her mother, who often ignores her in favor of her older, more talented sister.
- HeelFace Revolving Door: Despite being an antagonist, Ethel will sometimes help Mildred for the greater good. In Weirdsister College she's no longer an antagonist and mellows out a little, despite still being the same old Ethel, and in the 2017 series she resolves to become a better person a couple of times — only to fall back into her old ways when her new attitude doesn't get her the recognition she wants.
- Heel Realization: She gets a few in the 2017 series, particularly in the season finales... but since Status Quo Is God, they tend not to stick.
- Hypocrite: She casts a spell on Mildred for calling Sybil a weed, never mind she treats her sister far worse than anyone else does.
- Involuntary Shapeshifting: Turns Mildred into a frog in Book 3. In the 1998 TV series she also turns Charlie into a donkey.
- Karma Houdini: Zig-zagged. She never gets a comeuppance for three of her worst deeds in the TV show that would normally get someone expelled - pushing the boat out to sea with Tabby and Ms Hardbroom in it, turning Mildred to stone for the sake of an art competition and stealing Mildred's holiday project of talking animals solely because she forgot her project at home.
- Lethal Chef: She tries to cook breakfast for Mildred and Cass in the spin-off. Emphasis on tries.
- Never My Fault: Ethel always finds a way to blame Mildred for everything:
- Ethel blames Mildred for being banned from Hellibore's master class - ignoring the fact that she's being punished for turning Millie into a frog.
- Taken up to eleven in the revival when Ethel blames the destruction of the founding stone on Mildred. Ultimately subverted as Ethel does admit to be responsible by the end of the episode.
- Rich Bitch: The TV series says she's from a long line of witches and her father is one of the school governors. She's rich enough to have had private flying lessons prior to starting school.
- Smug Snake: She's always top of the class - and will never shut up about it.
- Teacher's Pet: To some extent. Although the teachers don't notice some of her antics, she'll still get punished whenever she's caught misbehaving.
- Teens Are Monsters: Ethel really isn't a nice person. There are several instances where her meddling could have gotten people killed or seriously hurt. She bewitches the broomstick she lends Mildred to buck her off during the display. She shoves a boat out to sea when she finds out Mildred's cat is on board - and doesn't seem to care that Tabby could have drowned. All just to get Mildred into trouble.
- Teeth-Clenched Teamwork: Subverted. Whenever Ethel and Mildred have to work together, they rarely seem to have problems. Like saving Drucilla from a blizzard or else coming up with a plan to stop Miss Hardbroom from leaving.
- Took a Level in Jerkass:
- In the 2017 series, she's retrospectively revealed to have done this since her younger days. According to Sybil, Ethel was a Cool Big Sis to her when they were younger, always looking out for her and comforting her when she was upset, but she grew meaner as they grew older.
- She takes an additional level in jerkass in the beginning of the third season, after having vowed to do just that at the end of the second season. It gets so bad that she accidentally turns herself into a swamp troll for casting too many spells in anger, and deliberately creates a threat to Cackle's just so that she can stop it (and she can't even do that right).
- In the 2017 series, she's retrospectively revealed to have done this since her younger days. According to Sybil, Ethel was a Cool Big Sis to her when they were younger, always looking out for her and comforting her when she was upset, but she grew meaner as they grew older.
- The Unfavorite: Ethel is sure her parents prefer the successful Esmerelda over her and can't stand it. The worst part is that her belief may be right.
Drucilla Paddock (Holly Rivers), Drusilla Paddock (Tallulah Milligan)
- Ascended Extra: Becomes one in the books thanks to her role in the TV series.
- Awesome, Dear Boy: In-universe. She's ecstatic when she gets cast as the evil Baron Overblow in the Halloween tableau.
- Beta Bitch: To Ethel.
- Bound and Gagged: In contrast to the books, where this happens to Griselda, Mildred does this to her to take her place and get the chance to see the Grand Wizard.
- Butt-Monkey: Gets rather a lot of slapstick thrown her way.
- Cross-Cast Role: In-universe. Both times the school puts on a production, she plays a male part. She plays Baron Overblow in the Halloween tableau and is set to play Prince Charming in the Christmas pantomime.
- Deadpan Snarker: Compared to Ethel's Smug Snake, Drucilla is a lot more sarcastic.
- Demoted to Extra: While a major character in the 1998 series, she has a much smaller role in the 2017 series, only appearing in the first season before getting Put on a Bus.
- Eek, a Mouse!!: Subverted. When the other girls freak out about a beetle in Ruby's bed, Drucilla has no problem picking it up and helping it outside.
- Enemy Mine: She and Enid end up collaborating on a school project for one episode.
- Establishing Character Moment: Cruelly laughing at Mildred's broken broom in the pilot.
- Even Evil Has Standards: Drucilla doesn't approve of Ethel cheating in "The Heat Is On" (though she still goes along with it). And she ultimately ends her friendship with Ethel when the latter tries to get Mildred thrown out in the penultimate episode.
- Evil Redhead: Borderline example in the 1998 series. While she's an antagonist, she gets more Pet the Dog moments than Ethel.
- FaceHeel Turn: Subtle. In the pilot, she's shown among the girls running to see if Mildred is okay. A few scenes later she's shown with Ethel, laughing at Mildred's broken broom - implying they hit it off and she now hates Millie by association.
- Friendship Moment: She's seen consoling Ethel in the last scene of the finale.
- HeelFace Turn: At the end of the series she gets fed up with Ethel's antics, and ends their friendship.
- Huge Schoolgirl: Definitely in the 2017 series, where she's the tallest girl in her year and towers over Ethel.
- Minion with an F in Evil: Depending on the Writer she'll sometimes be this.
- Named by the Adaptation: Her last name wasn't revealed in the book.
- Put on a Bus: In the 2017 series, she doesn't return for the second season, having transferred to Pentangle's.
- Race Lift: Like Enid, she's black in the 2017 series.
- Spell My Name with an "S": Or rather spell her name without an S. It's Drucilla. It's frequently misspelled by fans - possibly due to influence of another Drusilla. The 2017 series just adds to the confusion by changing the spelling of her name so that it is "Drusilla."
- Why Did It Have to Be Snakes?: Despite her feelings towards bugs (see above), she absolutely can't stand lizards.
Ruby Cherrytree (Joanna Dyce)
An original character created for the 1998 TV series. A token black girl, Ruby is a member of Mildred's gang. She's known for being a bit of a technofile, owning various modern conveniences - and greatly annoying Miss Hardbroom.
- A Day in the Limelight: "Sorcery and Chips" and "Which Witch Is Witch" give her a prominent role.
- Black Best Friend: Well she's not Millie's best friend but she still counts.
- Brainy Brunette: She's shown reading a book about physics, and does successfully invent a couple of things.
- Brilliant, but Lazy: She could probably do a lot better in her classes if she applied herself a little more, given how well she invents things in Season 3.
- Bungling Inventor: Well she is only a teen and she has to work in a school with no electricity.
- The Cast Show Off: In-universe. The school pantomime puts in some Padding for Ruby to show off a tap dancing routine. Her actress Joanna Dyce is a trained tap dancer herself.
- Canon Foreigner: Not mentioned anywhere in the books, besides a line saying Mildred has "loads of friends".
- Eek, a Mouse!!: Is left a screaming mess when she finds a beetle in her bed.
- Gadgeteer Genius: Seems to have various gadgets and gizmos stashed in her room.
- Gamer Chick: Implied in the first episode. She compares riding a broomstick to playing a game. "These things need joysticks".
- Meaningful Name: Inverted. 'Ruby Cherrytree' sounds more like the name for a Granola Girl.
- Sailor Earth: Since Mildred in the books is said to have "loads of friends", Ruby's existence has a justification.
- The Smart Guy: She's the most tech savvy of the girls.
- Those Two Guys: With Jadu.
- Token Minority: She's one of the only black girls in the whole school.
Jadu Wali (Harshna Brahmbhatt)
Another original 1998 series character. A token Indian, she doesn't have much character. According to her actress, she gets excited a lot but not much of it is shown.
- A Day in the Limelight: "The Unfairground" is the only episode to give her a lead role. And that's the second-last. In "Sweet Talking Guys" she's chosen as one of the debate speakers.
- Canon Foreigner: Doesn't appear in the book.
- Characterisation Marches On: In the first couple of episodes, she seemed to be the wet blanket of the group. This trait is gone by episode 3.
- Dull Surprise: Known for her monotonous delivery.
- The Generic Guy: Doesn't seem to have much of a personality. She gets no real episodes to herself. Whether it's because of Tokenism or simply because her actress wasn't very good is up to you.
- Its Pronounced Tro Pay: Realises that Charlie's spell backfired because he pronounced the last word - duccio - wrong. He said 'duck-ee-oh' when it's 'doo-chee-oh'.
- Only Sane Man: Comes across as this sometimes.
- Oop North: She speaks with a Northern accent.
- Rapunzel Hair: Although it's tied back in a braid all the time, her hair goes down to her waist.
- Sailor Earth: For the same reasons as Ruby.
- Slapstick Knows No Gender: In the pantomime she gets gunged along with Ted Blossom.
- Token Minority: Of the Indian variety.
Sybil Hallow (Charlotte Knowles/Trixie Hyde)
Ethel's younger sister. Rather than being a snob like Ethel, Sybil is a nice girl at heart who is overwhelmed by the Cackle's experience.
- A Day in the Limelight: "The Genius of the Lamp" is from her POV.
- Annoying Younger Sibling: From Ethel's perspective anyway.
- Ascended Extra: Her only book appearance is Mildred telling her the frog story. She's a regular character in both TV series from Season 2 onwards.
- Big Brother Bully: Ethel is this to her. Sybil looks to Mildred as inspiration instead."All I want is a sister. A real sister, not a bossy boots like Ethel"
- Big Sister Worship: Towards Esmeralda. To the point that when Clarice makes a negative comment about Esmeralda, Sybil almost ends their friendship.
- She develops a variation of this towards Mildred in the two TV series, as she recognises Mildred as a genuinely good and heroic person who does the right thing even if she screws up.
- Crouching Moron, Hidden Badass: Sybil may be nervous but she is capable of getting things done, like trying to rescue Mildred's bats or turning Mistress Broomhead back into a child.
- Drunk on the Dark Side: Sort of when she has control of a magic lamp. She uses it to get whatever she wants and briefly rejects anyone who challenges her.
- Flanderization: Her one appearance in the books was crying on her first day of school. The TV series ran with this and made sobbing uncontrollably part of Sybil's character. She does get better in Season 3 where she's better adjusted to Cackle's.
- Generation Xerox: Like her older sister, her best friend is a redhead. The similarities end there though.
- Hero Worship: Towards Mildred in both series. After Mildred saves her from the tornado (1998)/saves the school by helping to restore the Founding Stone (2017), Sybil looks up to her as a role model.
- Lovable Coward: In the 2017 series, with traces of Cowardly Lion. It's summed up with an Establishing Character Moment in her first scene in the second season, where she and Ethel are flying to school on their broomsticks:Sybil: (shrieks in terror, startling Ethel, and then looks ashamed) Sorry. Ethel. Think I'm just a bit nervous.
Ethel: (annoyed) Of what?
Sybil. Flying. Falling off. Miss Hardbroom yelling at me. Losing my powers like poor Esmerelda...
- Let's Get Dangerous!: It's Sybil who stops Hecate Broomhead - using the forbidden Almanac to turn her into a child again.
- Nice Girl: In the 2017 series, she's quickly established as this when, despite her timid and scared nature, and despite Ethel just scoffing, she does her best to help out Mildred.
- Rich Bitch: Averted. Although she's Ethel's sister, she's not bitchy at all.
- Sibling Yin-Yang: With all her sisters. It's easy to see just how she contrasts against all three of them:
- Spoiled Sweet: Downplayed but she is much nicer than her Spoiled Brat of a sister.
- Uptight Loves Wild: The uptight to the wild Clarice
- In the revival she the uptight to wild Beatrice and is slightly less uptight then Clarice.
- The Unseen: In the first season of the 2017 series, she is mentioned (and at one point addressed off-screen) but doesn't appear. She makes her actual on-screen debut in the second season, when she starts her first year at Cackle's.
Esmerelda Hallow (Miriam Petche)
- The Ace: Esmerelda is not only good at everything, but exceptionally good at everything. All the teachers, and even the Grand Wizard, are constantly praising her remarkable talents... usually in front of Ethel.
- Always Someone Better: To Ethel. While Ethel is skilled in her own right, she's outclassed by Esmerelda in everything... including getting more attention from their mother.
- Broken Ace: At the end of the first season, when she loses all her magic thanks to Agatha.
- Canon Foreigner: Was created for the remake.
- Cool Big Sis: She tries to be this to Ethel, even if Ethel doesn't always appreciate it. Sybil, however, is a lot more appreciative.
- Expy: If Ethel is like an amalgamation of Hermione Granger and Draco Malfoy, Esmerelda is more like a female Cedric Diggory.
- Hair of Gold, Heart of Gold: Just as blonde as Ethel, and very sweet-natured. She often helps younger students who need it and always tries to look out for her sister.
- Honor Before Reason: She'll always do her best to aid anyone who needs it... even when it puts her at a disadvantage, and even should be blatantly obvious that helping out would be a bad idea.
- Humble Hero: She usually tries to downplay her own successes, partly because she sees how bad Ethel feels when being compared to her.
- Nice Girl: Always polite and friendly, always trying to do the right thing.
- No Good Deed Goes Unpunished: Her desire to help out and do the right thing does occasionally misfire spectacularly, when she's tricked into helping out the wrong people.
- Sibling Yin-Yang: With both Ethel and Sybil, though in different ways:
Clarice Crow/Twig (Georgia Isla Graham/Kitty Slack)
- A Day in the Limelight: "The Lost Chord" and "The Genius of The Lamp".
- Adaptation Dye-Job: In the books and the 1998 series she's a redhead, but the 2017 series turns her into a brunette.
- Ascended Extra: Only gets one scene in the books, but is a regular supporting character in the 1998 series, and has an even larger role in the 2017 series.
- Alliterative Name: In the 1998 series. Averted in the 2017 series, where her last name is "Twig."
- Be Careful What You Wish For: Rather literally, when her idea to create a magic lamp goes horribly wrong.
- Brainy Brunette: In the 2017 series, she's got dark brown hair and depicted as extremely intelligent. She even wears glasses.
- Class Clown: In the 1998 series only. She puts a dancing potion in food the students make in cooking class. The fun starts when the teachers want the food.
- The Comically Serious: Her 2017 incarnation, in direct contrast with her 1998 self, doesn't have much of a sense of humor, but tries her best to convince the others that she does have one. With mixed results.
- Fiery Redhead: In the books and the 1988 series, she has "brilliant orange frizzy hair" and is a bit more spirited than her best friend Sybil.
- Innocently Insensitive: She's very blunt and doesn't always think of the implications of what she says, which does cause some friction between her and Sybil in the 2017 series.
- Insufferable Genius: Played sympathetically in the 2017 series; Clarice needs to always be the smartest person in the room, but only because she believes she has nothing to offer besides her mind.
- Plucky Girl: Definitely in a dangerous situation.
- Romantic Two-Girl Friendship: With Sybil.
- Satellite Character: If she's ever involved in the plot, it's due to her friendship with Sybil. She does get the occasional Day in the Limelight in the third season of the 2017 series, though.
- Smart People Wear Glasses: 2017 only.
- Uptight Loves Wild: She's the wild one to uptight Sybil.
- In the revival she the uptight to wild Beatrice.
Beatrice Bunch (Ynez Willams)
- Black Best Friend: To Sybil and Clarice in season 2. In season 3 she begins getting a lot more individual attention and her own ongoing subplot.
- Blessed with Suck: Has asthma that causes her to disappear when she sneezes. It later reveal that her sneezes are caused by an allergy to cats.
- Didn't Think This Through: When casting a spell to get rid of her allergies, she accidentally makes all the cats in Cackle's disappear.
- Feminine Women Can Cook: Subverted. She's more of a tomboy than Sybil or Clarice, but is a talented cook.
- Intergenerational Friendship: Develops one with Mrs Tapioca, despite a rocky start.
- Missing Mom: It's revealed in season 3 that her mother is dead.
- Morality Pet: Ends up becoming one to Mrs Tapioca in the third season.
- Satellite Character: In season 2, where most of her plots revolve around Sybil. In season 3, she gets an ongoing plot of her own when her interest in and talent for cooking sees her taking on an assistant role to Mrs Tapioca.
- Uptight Loves Wild: The wild to the uptight Sybil and Clarice.
Felicity Foxglove (Dagny Rollins)
- Ascended Extra: In the first season of the 2017 series she's one of Mildred's classmates and doesn't get a lot of attention. In the second season she has a much larger role; not only does her blog, the Daily Bubble, come into play, but she also essentially replaces the now-absent Drusilla as Ethel's companion and partner-in-crime.
- Beta Bitch: Plays this to Ethel sometimes; she seldom starts anything herself, but doesn't have many scruples and is all too willing to join Ethel in a bit of Disproportionate Retribution.Felicity: If you can't stir with the big girls, stay away from the cauldron.
- Canon Foreigner: She never appears in the original books or the 1998 series.
- Fangirl: A bit to Miss Pentangle, whom she thinks is "very glamorous." She'd originally wanted to go to Pentangle's, but her mother wouldn't let her because it's co-ed. She still occasionally complains about Cackle's and compares it negatively to Pentangle's.
- Intrepid Reporter: She has shades of one, always after news to post on her blog. On a couple of occasions she gets herself into dangerous situation simply because she sensed that there was a story to be had.
- Knowledge Broker: According to Ethel, Felicity "has eyes and ears everywhere" and always manages to find out everything before anyone else. School announcements and news tend to appear on her blog before they have been officially made.
- Pet the Dog: While often mean-spirited, Felicity nevertheless has moments of kindness. Most notably in the third season when she starts an I Am Spartacus moment to stick up for Julie Hubble.
- Suspiciously Similar Substitute: Played with. She replaces Drusilla as Ethel's companion in the second season, and Ethel certainly seems to expect her to take on the same role to her as Drusilla did. ("We all have roles, Felicity. I'm a thinker, a problem-solver, a leader. You're a... doer.") However, Felicity is quite unlike Drusilla when it comes to personality, and doesn't always go along with the role Ethel tries to shove her into. She's also a lot more openly critical of Ethel, going against her on several occasions.
Fenella 'Fenny' Feverfew (Emily Stride; Julia Malewski) and Griselda 'Griz' Blackwood (Poppy Gaye)
- Age Lift: Fenella is implied to be in Mildred's year when she transfers in the book. In the TV series, she's a year ahead. Averted with Griselda, who is said to be a year ahead of Mildred in the book.
- Alliterative Name: Fenella Feverfew.
- Ascended Extra: Both of them. Fenella's case is quite impressive; she's simply the girl who transfers to Pentangle's Academy in Book 4 and gives Mildred her pet cat. Griselda meanwhile is the girl that Mildred ties up in Book 3.
- Bound and Gagged: Griselda in her book appearance. This role is given to Drucilla in the TV series.
- Cool Big Sis: To Mildred's class and later Sybil's.
- Divergent Character Evolution: Inverted. In the first couple of episodes, Griselda seemed to be a bit more of a jokester and Fenella more caring. This is dropped later.
- Everyone Has Standards: Even they won't go near the Tome of Eldritch Lore Miss Cackle has in her office.
- Good Bad Girl: Both are rebellious and sneaky, but unambiguously good.
- Only Known by Their Nickname: Mostly known as 'Fenny' and 'Griz'.
- Those Two Guys: They're always together and it's only in "The Inspector Calls" that they get separated (Fenella going with Sybil to rescue Mildred's bats).
- The Trickster: They slip into it a few times, especially when they're put against Baz and Gaz.
Mabel Tapioca (Annette Hannah)
- Antagonistic Offspring: Initially. She lives with her father and does not get along with her mother. As the episodes go on, they do come to a bit of an understanding.
- Aw, Look! They Really Do Love Each Other: Occasionally gets some moments like this with her mother.
- Jerk with a Heart of Gold: She can be surly, bad-tempered and rude, and not always the most ethical when it comes to business, but she's not a bad person.
- Like Parent, Like Child: Part of the reason why she has problems getting along with her mother is that they are Not So Different. Though Mabel is loath to admit it, the two share a lot of character traits: They're both haughty, proud, stubborn and with a tendency to lash out and keep other people at an arm's length.
- Little People Are Surreal: Completely averted. Her dwarfism is barely even commented on and she's treated like any other student.
- Young Entrepreneur: She has traces of this with her sweet-selling business. Always looking to earn some quick cash, she occasionally tempts others with sales and discounts that aren't really. At one point she tells the other students that in order to celebrate an event, sweets are complimentary — "and by that I mean you can buy them for a price, with my compliments." It's hinted she gets this trait from her father.
Indigo Moon (Kelsey Calladine-Smith)
- Did Not Think This Through: A recurring problem for her. She tends to go with the first idea she gets without stopping to think whether it's a good idea or not.
- Drunk with Power: Her original dilemma. Upon becoming a witch she got carried away with magic-use, becoming a danger to herself and others. Post-revival she's constantly in danger of succumbing to the trope because magic just makes everything so easy, and Indigo is not good at thinking about consequences.
- Intergenerational Friendship: Played with, a little.
- She's technically much older than Mildred, but since she spent thirty years as a statue she is still physically and mentally the same age.
- Ultimately subverted when she reconciles with the grown-up Joy, who is now known as "Miss Hardbroom." At first, Miss Hardbroom refuses to deal with Indigo, calling her "a mistake from my past" and keeps her true identity from the girl. When Indigo finds out that the Sadist Teacher out to get her is the same person as her old friend Joy, she loses her temper, latches into a "The Reason You Suck" Speech and flies off from Cackle's. In the final episode of the third season, the two do reconcile, but admit that with all that has happened, they can't be friends the way they were before.
- Muggle: Started out as one, though she always believed in magic and even before she became a witch she could see through the Invisible to Normals spells the witches use to keep non-witches from seeing them.
- Orphan's Ordeal: It's not given a lot of focus, but after thirty years missing, Indigo has no family left and doesn't really have anywhere to go other than Cackle's. Even before her stint as a statue, she apparently had no parents."I had an aunt and an uncle, but I can't find them. I went back to the old house, I asked everyone I could, but no one even remembers them."
- "The Reason You Suck" Speech: Gives one to the entirety of Cackle's Academy when she finds out that her friend Joy's identity has been kept from her.
- Unskilled, but Strong: Sums up her magic ability very nicely. Indigo is a powerful witch but isn't so good at controlling that power.
Henrietta "Hettie" Hubble (Alice Connor)
- Brilliant, but Lazy: She's a quick learner and has lots of magic talent — and she's well aware of this, which is why she always tries to go for the quickest and easiest solutions; she tends to just assume she'll be an Instant Expert at anything she tries without putting in the work.
- Catchphrase: "Oops."
- Contrasting Sequel Main Character: While Hettie shares her cousin's tendency to get into trouble, the reason why is almost the opposite: Mildred is a well-meaning Klutz who tended to be in the wrong place at the wrong time, while Hettie is a Brilliant, but Lazy schemer who tends to bite off more than she can chew. She's also a lot more brash and cheeky than Friend to All Living Things Mildred.
- Didn't Think This Through: Her main character flaw, and the main reason why her Zany Schemes tend to backfire. How much trouble could she have saved herself if she'd just taken a few minutes to think before she acted?
- Establishing Character Moment: Just like her cousin Mildred got hers in the first episode of the 1998 series, Hettie gets hers in the first episode of The New Worst Witch. She's introduced flying her broomstick through the forest up to Cackle's, with the adult Mildred as a passenger, expertly dodging trees and ignoring Mildred's pleas of taking it easy. Then, when landing, she discovers she's been flying in the wrong direction and ends up being late to Cackle's anyway. This pretty neatly establishes her notable magical talent and expert broomstick flying, as well as her tendency not to think ahead and ignore well-meant advice.
- Mouthy Kid: She can be this at times, talking back to Miss Hardbroom in ways that Mildred never would.Miss Hardbroom: Girls must wear regulation uniform at all times.
Hettie: (indignantly) Even in the shower?
- Nice Girl: It seems to be as much of a Hubble trait as the talent for getting into scrapes. Hettie's brash and outspoken, has a bit of an ego, and can be Innocently Insensitive at times, but she's friendly and generous to a fault.
- Small Name, Big Ego: While she is a very talented witch, she's not quite as talented as she thinks she is.
- Unwanted Assistance: She always wants to help, whether her help is actually wanted or not. In fact, even if you repeatedly tell her not to do anything to help you, she'll still go out of her way to help you behind your back.
- Zany Scheme: Becomes her trademark after a while; she can seldom let an episode pass without trying to pull off one of these.
Mona Hallow (Annabel Barnston)
- Black Sheep: Certainly views herself as this for the Hallow family.
- Deadpan Snarker: She's got a very dry sense of humor.
- Fiery Redhead: She's the only Hallow with red hair, and while her temper isn't explosive, she is totally fearless and never backs down.
- Sibling Yin-Yang: While she never interacts with her sisters on-screen, she manages to be a contrast to all of them:
- Ethel is stuck-up, snobbish and can be a bit of a bully. Mona is friendly, helpful and will stand up for bully victims.
- Sybil is a timid pessimist. Mona is bold and optimistic.
- Though it's unclear whether or not the two even exist in the same timeline, since they are both Canon Foreigners created for two different adaptations, the competent and friendly Esmerelda is definitely the sister that Mona has the most in common with. And yet she manages to be a contrast to Esmerelda as well — while Esmerelda embraces witching traditions and is the darling of the teachers, Mona eschews traditions in favor of progress, and gets in trouble a lot more.
- The Smart Guy: Probably the smartest student in Mildred's year, and not at all shy about it — though she does manage to avoid becoming an Insufferable Genius.
Crescentmoon "Cressie" Winterchild (Paislie Reid)
- Beware the Nice Ones: "I'm sensitive, I'm artistic, I'm highly strung. Humor me — or else!"
- Cuckoo Snarker: She's often a little out of it and sometimes her logic only makes sense to her, but she can more than hold her own in a Snark-to-Snark Combat.
- Genius Ditz: Cressie is much slower on the uptake than Hettie or Mona, and she can be downright dense at times, but she's a skilled witch and pulls off some impressive displays of magic.
- Granola Girl: Hedge witches have a tendency to be this, and Cressie is no exception. She's a strict vegetarian and believes in the purity of nature. When carving pumpkins for Halloween, she insists on eating all the innards because "otherwise it's cruelty to vegetables."
- Lovable Coward: She's far less brave than Hettie and Mona, and usually the one to worry that things will go wrong.
- New-Age Retro Hippie: Downplayed, but definitely there. She enjoys meditating, she often talks about karma and negative vibrations, and she describes the hedge witch community as "filled with beauty, serenity, and harmony." At one point she tried to get out of taking a test because "hedge witches don't believe in tests, Miss Hardbroom! They create bad cosmic vibrations!" Needless to say, Miss Hardbroom did not accept this excuse.
- Time Travel: She discovers in the first season that she's a Time Witch, with a natural ability to alter time. She shares this ability with Miss Cackle.
- Unsportsmanlike Gloating: Winning tends to bring out the worst in her, which is one reason why she doesn't like participating in contests. The other reason is that she's also a bit of a Sore Loser.
Belladonna Bindweed (Francesca Isherwood)
- Bitch in Sheep's Clothing: She looks sweet and innocent, and she milks this for all it's worth, playing Teacher's Pet and pretending to be a model student and Nice Girl. In the first season of The New Worst Witch she tends to get away with it too, making her a bit of a Karma Houdini.
- Blondes Are Evil: Where Ethel couldn't really be called "evil," Belladonna definitely can.
- Contrasting Sequel Antagonist: Just like Hettie is a contrast to Mildred, Belladonna is a contrast to Ethel. While they are both petty and malicious bullies who tend to be unfairly favored by the teachers, Ethel was an excellent student who would occasionally get a My God, What Have I Done? moment when she realized she'd gone too far, and would even have the odd Enemy Mine with Mildred when they teamed up to save the school. Belladonna is a below-average student and has absolutely no scruples; she'll cheerfully watch the school burn and actively tries to help Agatha Cackle and her cronies take over.
- Dumb Blonde: Downplayed, but while Belladonna does have a fair bit of cunning, she is definitely Book Dumb, doing poorly in classes and generally not being as clever as she thinks she is.
- False Friend: She'll be all pleasant if she wants something, but she'll sell anyone out at a moment's notice if she thinks that's in her own best interest. It's especially clear in her relationship with Cynthia; she is usually perfectly friendly to her, but it's purely because she sees the value of having a partner-in-crime. If Cynthia's in a fix, Belladonna won't lift a finger to help her.
- Karma Houdini: In the first season. She even smugly Lampshades it to Cynthia, pointing out how she always gets away with everything. By the time the second season comes around, though, the teachers seem to have caught on, and she loses her Karma Houdini status.
- Manipulative Bitch: She loves to play this part, always trying to manipulate others to do what she wants.
- Smug Snake: She has absolutely no sympathy or respect for anyone, and she treats everyone with disdain unless she is trying to manipulate them.
- Teacher's Pet: Of the most insincere type. Belladonna has no real respect for the teachers, but knows how to suck up to them in order to make herself look good in their eyes. It works for the most part in the first season, though by the second season the teachers seem to have caught on — Miss Hardbroom in particular goes from treating Belladonna favorably in the first season to having absolutely no patience with her in the second.
Cynthia Horrocks (Daisy Hughes)
- Arch-Enemy: Sets herself up as this to Mona, because Mona's father was the one who drove her father out of business, thereby ruining him and forcing her to transfer from Pentangle's to the far less fancy Cackle's.
- Beta Bitch: Falls into this role with Belladonna quite easily.
- Bitch in Sheep's Clothing: Not quite as good at it as Belladonna, but she makes a good effort.
- Comically Missing the Point: Has a tendency to do this at the worst possible times.
- The Ditz: She does not have Belladonna's cunning, even though she tries to pretend.
- Even Evil Has Standards: A thoroughly unpleasant person, but unlike Belladonna she will occasionally display that she has a conscience.
- False Friend: Perhaps the one thing she does better than Belladonna is pretend that their friendship means something. At times she actually seems to care about Belladonna... but it's all an act. She's just as ready to ditch Belladonna if that's in her best interest. Illustrated perfectly in the episode where the girls accidentally take an "opposite potion" that takes their most prominent traits and makes them the opposite. As soon as Cynthia and Belladonna are affected, they share a joyful hug and proclaim themselves to be the bestest of best friends.
- Last-Name Basis: Most people call her "Horrocks."
Dyllis Mustardseed (Narisha Lawson)
- Adorkable: Not the most socially-adjusted of witches, but she has moments where she's absolutely adorable in her ignorance.
- Extreme Doormat: She's so desperate to be liked that she refuses to stand up for herself.
- Horrible Judge of Character: Combined with Easily Forgiven towards Belladonna. It couldn't be clearer that Belladonna hates her, and yet she keeps wanting to hang around her.
- I Just Want to Have Friends: Dyllis is very aware of her lack of popularity, and sometimes does foolish things in the hope that this will make the others like her.
- Stalker Without a Crush: Or possibly with a crush. She really, really. really wants to be Belladonna's friend, and is always following her around, to the point where it looks like she's nursing a pretty heavy crush on her. Belladonna can't stand Dyllis, but sometimes takes advantage of the girl by hinting that they could be friends if Dyllis will just do this one thing for her...
- Yes-Man: She'll enthusiastically go along with anything Belladonna says. Her eagerness to please in general often leads her to exaggerating, like when Miss Hardbroom sends her out to collect a spleenwart leaf, she returns with an entire plant bigger than herself.
Miss Constance Hardbroom (Kate Duchene/Caroline O'Neill), Miss Hecate Hardbroom (Raquel Cassidy)
The school potions teacher and strict disciplinarian. She's a stickler for tradition and will not hesitate to punish the girls for misbehaving. Known for appearing out of thin air at random. Despite her frosty demeanour she's shown to genuinely care for the welfare of the school and the girls deep down.
- Adaptational Badass: The TV series shows that Miss Hardbroom is quite formidable in combat. Agatha Cackle even refers to her as "the really dangerous one".
- Adaptational Heroism: The TV series greatly softens her character. While still very stern and strict, she's shown to only care about what's best for the school. This is Fridge Brilliance - as the books were from Mildred's perspective, of course she'd imagine HB being nastier than she actually is.
- Ambiguously Gay: Subtle in the 1998 adaptation (mainly fueled by her Does Not Like Men tendencies and the Belligerent Sexual Tension some viewers noted between her and Miss Drill), then much more obvious in the 2017 series where her relationship with Pippa Pentangle is played as a case of teenage Gayngst.
- ...And That Little Girl Was Me: In the 2017 series, Miss Hardbroom tells Mildred a story about a little girl named Joy who made a horrible mistake by giving her best friend magic. Mildred disbelieves her until she reveals that Hecate is her middle name and Joy is her first.
- Badass Teacher: Well in the TV series anyway. If the school is attacked by Wicked Witches, she's usually the one who saves the day.
- Compressed Hair: Mildred wonders how it's possible that HB can tie all her hair back into such a tight bun.
- Cool Teacher: Sometimes she can be this. She's certainly always pleased whenever Mildred does do well in her classes.
- Deadpan Snarker: In the 2017 series, she's more deadpan than ever and has gained a very notable sarcastic edge.
- Defrosting Ice Queen: In the 2017 series after she sees Miss Pentangle again.
- Do Wrong, Right: When (book only) she finds out Mildred has turned Ethel into a pig, she remarks that she's glad Mildred has learned something since starting.
- Does Not Like Men: Well boys. She's enraged at the idea of a boy wanting to attend Cackle's.
- Fantastic Racism: She holds a fair bit of disdain towards "normals." In the 1998 series, this is clearest in her attitude towards Miss Drill, as she's a non-witch. In the 2017 series this doesn't come up, as Miss Drill is a witch there — but Miss Hardbroom's Fantastic Racism still shows in the way she treats Midred's non-witch mother with barely-hidden contempt.
- Freudian Excuse: The 2017 series greatly expands on her backstory and shows just why she displays such hatred for the slightest deviation from rules and tradition, and even reveals the origin of her Fantastic Racism towards Muggles. When she was young and still went by the name "Joy," she made a Muggle friend named Indigo Moon. Wanting them to be together but knowing it was forbidden for witches to be friends with non-magical people, she used forbidden magics to turn Indigo into a witch. Unfortunately, Indigo was not used to magic, became Drunk with Power and wreaked a lot of havoc before eventually turning into a stone statue. Devastated, Joy decided never to break a rule or be friendly to a non-magical again, and started going only by her middle name, Hecate.
- Friendless Background: Strong implication in the 2017 series that this was the case when she was younger, with Pippa Pentangle the exception. Turns out that this was more or less by choice, after the pretty horrific fate of her first friend Indigo Moon.
- Heel Realization: For all the times where she crosses the line to Sadist Teacher, she always feels that she's completely justified in everything and never displays any regret for her behaviour... except for in the 2017 series where she gets hit pretty hard with the realization of how badly she's been handling the situation with Indigo Moon.
- Hypocrite: She is furious that Mildred and friends are apparently bullying Sybil and Clarice in the Season 2 premiere. This is ignoring her own frequent bullying of Mildred in class, not to mention her disdain of Miss Drill.
- I Am Very British: Kate Duchene really poshes HB up. She's like this in the audiobooks too, and in 2017.
- Ironic Name: In the 2017 series, Hecate is her middle name, but her first name is Joy.
- Lady of Black Magic: Everyone knows she's the strongest witch in the school, 1998 and 2017 - and she packs a punch in a fight.
- Letting Her Hair Down: The only time she does so is at the Halloween celebrations or at night. Mildred remarks that she doesn't look half as frightening when it's down.
- Maiden Aunt: Amusingly has to pose as Miss Drill's when they meet up with a group of Canadian Boy Scouts. She's not pleased about it.
- Middle Name Basis: Season Three reveals that Hecate is Miss Hardbroom's middle name.
- Mystical High Collar: Favours these, especially in 2017.
- Named by the Adaptation: The 1998 TV series gives her the first name "Constance," and the 2017 series names her "Hecate."
- Not So Above It All: She actually gets into the spirit of the Dance Party Ending in the season 2 finale.
- Pet the Dog: A lot more times in the TV series than the books. But rather a lot of heartwarming moments come between her and Mildred.
- Playing Against Type: In-universe example. She is cast as the Fairy Godmother in the school pantomime. And she seems to enjoy the cheers she gets.
- Prim and Proper Bun: So severe that her forehead sometimes appears "quite stretched."
- Purple Is Powerful: Her nightgowns are usually purple, and she does plenty of ass kicking in them.
- Rapunzel Hair: Whenever she wears it down, the hair goes well past her waist. The girls are very impressed by it.
- Robe and Wizard Hat: Favours her pointy black hat and long black dresses.
- Sadist Teacher: She often flirts with this trope, especially in the 2017 series where her sternness often slides into downright nastiness and even borderline bullying behaviour at times. What keeps her from embracing the trope fully, though, is that at the end of the day she does care about the well-being of her students and puts their safety first and foremost.
- Sarcastic Devotee: Possessed of Undying Loyalty to Ms. Cackle, but will also occasionally snark at her.
- Slapstick Knows No Gender: She gets the school dinners accidentally spilled on her, a bucket of water dropped on her head and gunge thrown at her face.
- Stern Teacher: Definitely the sternest and strictest teacher at Cackle's. Sometimes she slips into Sadist Teacher, especially if you ask Mildred.
- Sugar-and-Ice Personality: A strict disciplinarian most of the time, but does have a sweet side.
- That Woman Is Dead: The reason why she only goes by her middle name in the 2017 series.
- Tranquil Fury:
- Occasionally in the 1998 series. When Mildred drops a bucket on her during fire drill. She doesn't actually move until Mildred takes the bucket off her.
- Slightly more often in The New Worst Witch, probably thanks to Caroline O'Neill's portrayal of her being somewhat more subdued than Kate Duchene's.
- In the 2017 series, she's a master of this trope. The angrier she is, the quieter her voice. When she whispers, you know she's about ready to kill someone.
- Undying Loyalty: To Ms. Cackle, especially in the 2017 series. No matter what, she will support and defend Ms. Cackle, even if she doesn't always agree with her.
- Used to Be a Sweet Kid: In the 2017 series, it's revealed that as a child she was not totally unlike Mildred: sweet-natured, friendly and not the biggest stickler for rules. Her disposition soured thanks to a traumatic event in her childhood.
- Well-Intentioned Extremist: All she really cares about is preserving the traditions of the school.
Miss Amelia Cackle (Clare Coulter), Miss Ada Cackle (Clare Higgins)
Headmistress of the academy and - in the 1998 TV series - a spells teacher. In contrast to Miss Hardbroom, she's much nicer and more forgiving. She has an Evil Twin who's frequently trying to seize the school from her.
- Actually Pretty Funny: When Mrs Tapioca accidentally serves them food with a rat crawling on it in front of the Grand Wizard. Between apologising to Hellibore, she's clearly trying not to burst out laughing herself.
- Adaptational Badass: She certainly didn't immobilise Agatha without speaking in the books.
- Berserk Button: It's usually to do with her sister Agatha.
- Beware the Nice Ones: While she's friendly to the girls sent to her office, she can be very strict when she wants to be. In the penultimate episode, she worries that she's been too lenient with the girls.
- Big Eater: Episode 2 establishes this. One week on school dinners causes her to rethink what she's making the girls eat.
- Big Fun: She's quite plump but is described in loving tones.
- Big Good: As far as the academy is concerned.
- Bound and Gagged: In the season 1 finale. Complete with Banging for Help too.
- Cool Old Lady: Kind and friendly to all her students, and willing to wave some rather extreme traditions.
- Cool Teacher: In the TV series, as she's shown teaching classes. The Season 1 finale has her teaching the girls a spell through a game. She also wisely teaches Millie An Aesop that fear can't be magicked away - and that one just has to find a way to get used to it.
- Establishing Character Moment: Gets a really good one in the 2017 series. While it's not the first scene she's in, the viewer really gets a great display of what a Cool Old Lady she is (as well as her sweet tooth) when Maud and Mildred are late for being shown around the school, Maud has broken her glasses and Mildred gets travel sick. Miss Cackle calmly fixes Maud's glasses and comforts Mildred:Miss Cackle: You've never been through a transference spell before, have you, dear?
Mildred: *shakes her head*
Miss Cackle: I'll tell you a secret. I did the same my first time. *hands Mildred a sweet* Here. Take this.
Mildred: ...Is it magic?
Miss Cackle: Better. It's sugar. I never go anywhere without a bag of lemon drops. Suck on that, and you'll be fine next time.
- Generation Xerox: When we hear about Granny Cackle who founded the school, it turns out she was a Cool Old Lady too rather like Amelia.
- Hypocritical Humour: She scolds Miss Bat and Miss Drill for spying on Mr Hallow through the keyhole. As soon as they've left, she has a look herself.
- Identical Twin ID Tag: Not in the books, as she and Agatha wear the same glasses. In both the TV shows, the glasses are the visual cue to telling the sisters apart: in the 1998 series Miss Cackle is distinguished by wearing horn-rimmed glasses, and in the 2017 series she wears glasses while Agatha doesn't.
- Incoming Ham: When she thinks someone is trying to burgle her office in the series finale.
- The Mentor: As the headmistress, she is concerned with making sure the girls are motivated.
- Not So Above It All: Amusingly when Miss Hardbroom walks into Cosey's Tearoom, Miss Cackle dives under the table to hide - just as the girls have done in the other room.
- Out-of-Character Moment: In the season 1 finale, she's unusually stern and nasty in class. Mildred realises that it's Agatha impersonating her.
- Putting the "Pal" in Principal: During the 2017 series especially, she's very kind to her students, and always has time for their troubles.
- Reasonable Authority Figure: To the degree that in the penultimate episode, when Jadu and Mildred are to be expelled, she employs Loophole Abuse to have their parents withdraw them from school - so their permanent records won't be harmed with an expulsion.
- Sweet Tooth: She loves sweets, desserts and cakes.
- Trademark Favourite Food: Deserts in general. But it seems to be cheese. The password to her safe is Cauliflower Cheese.
- Tsundere: Type B. She's usually nice and kind to students - but won't hold back on the discipline if she's annoyed.
Miss Davina Bat (Una Stubbs), Miss Gwendolyn Bat (Wendy Craig)
A minor book character who becomes a main character in both TV series. She's the chanting teacher and the school's resident Cloud Cuckoo Lander. Known for eccentric things like eating cat food or locking herself in the staff room cupboard when she's offended. Leaves after 1998 season 2 to apparently live in "Inner Mongolia" (according to CITV).
- Adaptation Personality Change: She's implied to be strict in the books but becomes a lovable eccentric in the 1998 TV series. In the 2017 series, her personality is an amalgamation between the two; she is a lot less likely to tolerate nonsense from her students, but retains her affable nature and a good number of eccentric quirks.
- Arson, Murder, and Jaywalking: "You might have to eat snails one day. Or sheep's eyeballs. Or something really horrible like chocolate fudge cake with caramel sauce". She cringes as she says the last one.
- Brother Chuck: In the 1998 series, she disappears from Cackle's without a canon explanation. CITV said she went to live in Inner Mongolia.
- Bunny-Ears Lawyer: She's a bit of an eccentric, but she is genuinely good at her job.
- Call-Back: The 1998 season 2 premiere has Miss Cackle wondering where Miss Bat is, just as she did in the series premiere. Only instead of unexpectedly finding her in the cupboard like she did then, Miss Bat's gone away on holiday.
- Cloud Cuckoo Lander: She eats cat food, locks herself in the stationary cupboard for hours, and has several Berserk Buttons.
- Cool Teacher: Despite being nuts, she's kind and friendly to the girls.
- Drama Queen: Will often get offended over the most trivial things.
- Hypocritical Humour: She's seen eating a sweet she confiscated from a student.
- Meaningful Name: She's quite batty (as in eccentric). Likewise Davina means "beloved" or "friend". She's definitely the friendliest teacher at Cackle's.
- Messy Hair: Her wild grey hair is just about kept at bay in her bun.
- Misplaced Kindergarten Teacher: A few times. The notable one is trying to get the girls to eat their dinners with the 'here comes an aeroplane' trick.
- Named by the Adaptation: She's named Davina in the TV series.
- Not So Different: Alluded to a couple of times in terms of Mildred. "You stick to your banana; it has character. Talk to it. I talk to mine". Likewise Amanda Honeydew says that Miss Bat was the only teacher that ever understood her.
- Official Couple: With Algernon Rowan Webb in the 2017 series. They get married at the end of the third season.
- Out-of-Character Moment: Thanks to the personality change, her one canon book appearance becomes this in the series. Throwing Mildred out of class for laughing seems very at odds with her character.
- Slightly less out of character in the 2017 adaptation - she's friendly with the girls but is strict sometimes, and definitely less of a Cloud Cuckoo Lander than her '98 counterpart. She even looks more like the illustration.
- The Rival: With Miss Hardbroom in Season 1, Miss Drill in Season 2.
- Running Gag: Locking herself in the cupboard whenever she's offended.Miss Cackle: We'll be lucky to get her out of there before half-term.
- Slipknot Ponytail: We see her hair down when she's caught in a tornado in the hallway.
- Tsundere: Type B. Normally Adorkable and sweet, but will flip out if she's offended.
- Vitriolic Best Buds: With Miss Drill. The two are good friends but - from Season 2 onwards - they're in constant competition with each other and are always scoring points over who is the better class tutor.
- Voluntary Shape Shifting: It's said she once turned an entire class into swallows and migrated with them.
- Womanchild: She's called out for this behaviour by Miss Hardbroom.
Miss Imogen Drill (Claire Porter), Miss Dimity Drill (Shauna Shim)
The PE teacher at Cackle's. Although a little strict when it comes to exercise, she's still much nicer than Miss Hardbroom. In the 1998 TV series she's also the only non-witch member of staff, while in the 2017 series she has witch ancestry.
- Adaptational Attractiveness: The book's illustrations show her to be a hard-faced Brawn Hilda. The TV series has her played by a slender and kind-faced actress.
- Adaptational Badass: Inverted (but not to Adaptational Wimp). She was implied to be a witch in the books but is a Muggle in the '98 TV series.
- Adorkable: Her dancing in the '98 season 3 premiere.
- Age Lift: Inverted. The book illustrations show her as a stern middle-aged woman. The TV series have her as a woman in her twenties.
- Ascended Extra: Much like Drucilla, Miss Drill only made one brief appearance in the books written before the 1998 TV series. In the books written afterwards, she makes several further appearances in which her affable nature (when not playing Drill Sergeant Nasty) is a lot more prominent.
- Badass Normal: Although she doesn't have powers, she still saves the girls a few times.
- Boyish Short Hair: Used to contrast her with the rest of the teachers.
- Butt-Monkey: Occasionally, as she laments in the Halloween Episode.Miss Cackle: We all have our own roles to play in the running of the school.Miss Drill: Well mine seems to be gooseberry.note
- Cool Teacher: In Season 3. She volunteers to be the chaperone for Mildred's new club. She's also the one who usually argues in favour of the students.
- Drill Sergeant Nasty: She's this from the girls' perspective - since what teenage girl enjoys rigid exercise every day? More so in the books, where she threatens to punish the girls with extra PE.
- Dude, Where's My Respect?: Sometimes feels this way, especially when HB pulls rank on her and reminds her that she's not a witch.
- Evil Teacher: When she gains full witch powers. But even then she has a Heel Realisation.
- Generation Xerox: Her mother appears in the 2017 series, played by the same actress (and from what we see, a very similar personality).
- Hair of Gold, Heart of Gold: She's blonde-haired (in the '98 series) and very caring.
- Hooked Up Afterwards: In between Seasons 1 and 2 she started some kind of relationship with Serge Dubois.
- Meaningful Name: Since she's a PE teacher.
- Meaningful Rename: When she briefly gains witch powers, she renames herself Hilary Hemlock.
- Muggle: In the '98 TV series the only non-witch member of staff.
- Official Couple: The only character to be in a canon relationship - with Serge Dubois from the Rocky Mountain Rangers.
- Race Lift: Played by a black actress in the 2017 series. Her mother is too.
- Tomboy with a Girly Streak: Although she's often seen in workout clothes, she has a love for drama and plays too.
Frank Blossom (Berwick Kaler)
The school caretaker and gardener in 1998. The only male member of staff at Cackles.
- A Day in the Limelight: "Green Fingers and Thumbs", which centres around his participation in a gardening competition.
- Bumbling Dad: Bumbling Uncle to Charlie.
- Bungling Inventor: When it comes to creating an alarm system in a school with no electricity.
- First-Name Basis: He's called by his first name by most members of staff.
- Meaningful Name: In this case it refers to him being a gardener.
- Muggle: Along with Miss Drill, the only non-witch members of staff.
- The One Guy: As far as the school itself goes. There are other male recurring characters.
- Oop North: He has a distinct northern English accent.
- Put on a Bus: To Horticultural College in season 3.
Ms Lavinia Crotchet (Polly James)
After Miss Bat leaves between Mildred's second and third years in the 1998 series, Ms Crotchet replaces her as chanting teacher.
- Actually Pretty Funny: She has this reaction to the jokes written in The Fairground. Even the ones about her.
- Cool Teacher: She gets on very well with the girls.
- Granola Girl: By witch standards anyway. In her first episode, she's trying to tune up a mood synthethiser and she believes in cleansing rituals and the like.
- The Makeover: In "The Hair Witch Project", she has Enid and Drucilla give her a rather radical one by magic.
- Meaningful Name: Hers references that she's a music teacher.
- Only Sane Man: She slips into this on occasion, as the newcomer to the arguing between the other three teachers.
- Suspiciously Similar Substitute: A Cloud Cuckoo Lander chanting teacher just like Miss Bat. She's a little less wacky than her though.
- Tarot Troubles: She reads a deck of tarot cards in "The Unfairground" that foreshadow revolt and revolution.
Mrs Maria Tapioca (Annette Badland/Zita Sattar)
The school's dinner lady.
- Adaptational Jerkass: In the 2017 series, she's a haughty and sour-faced woman who doesn't much like children — a far step from her jovial Big Fun characterization from the 1998 series.
- Turns out she has a Freudian Excuse; stuck in a job she doesn't like and never getting anything other than complaints and insults from the students. She also has a strained relationship with her daughter.
- All There in the Manual: Her first name Maria is never said by any of the characters.
- Ascended Extra: She appears only in the fourth book, but makes more appearances in the TV series.
- Big Fun: She's chubby and portrayed as a fun person. She's especially enthusiastic about the food she would love to prepare.
- Brother Chuck: She disappears without explanation during Season 2.
- A Day in the Limelight: Sort of, in both TV series.
- "When We Feast At The Midnight Hour" in the 1999 series gives her a sizeable supporting role.
- "Magical Mum" from the 2017 series gives her a good deal of attention, going more into her background and introduces her estranged daughter Mabel.
- Eek, a Mouse!!: Subverted. She's not scared of mice in her kitchen, but she does want them gone in case they eat all the food.
- Lethal Chef: Inverted. She's a good cook but is forced to make everything out of a book of traditional school dinners. As the food takes half an hour to carry upstairs, it always arrives cold.
- Meaningful Name: The cook is named after a desert.
- Muggle: She appears to be this, as she's not shown doing any magic.
- Race Lift: Her nationality isn't said in the books, but she becomes Italian in the TV show.
Miss Deirdre Swoop (Stephanie Lane)
- Academic Athlete: She was the top student at Pentangle's, and she's also very athletic, usually dominating the scene in anything sports-related. At Weirdsister College she's the secretary of sports and hobbies, and of course at Cackle's the teaches PE.
- Adorkable: She can be a little awkward at times, but post-Character Development she's very sweet, even if she retains some Upper-Class Twit tendencies. Especially in The New Worst Witch, where she's overeager to prove herself as Cackle's new PE teacher.
- Ascended Extra: Only appeared in one episode of the original 1998 series, but became part of the regular cast in Weirdsister College and The New Worst Witch.
- Competition Freak: A staple of her character. She's very competitive and loves to show off — though she becomes a lot more mature about it as she gets older.
- I Am Very British: She speaks in a very posh voice, though she's toned it down slightly by the time she's become a teacher.
- Open Mouth, Insert Foot: She has a tendency towards unthinkingly insulting people, though she gets somewhat better at catching herself in this.
- Took a Level in Kindness: As a Pentangle's student she's very haughty and full of herself. In Weirdsister College she's grown up a lot and becomes good friends with Mildred, even if she's still very competitive. In The New Worst Witch she's the Adorkable, friendly and encouraging (if slightly awkward) new teacher.
- Upper-Class Twit: Definitely comes across as this at times.
Miss Nightingale (Indra Ove)
- Cool Teacher: The students adore her. Miss Hardbroom does not.
- Chuck Cunningham Syndrome: She vanishes inexplicably between season and is replaced by her Suspiciously Similar Substitute, Miss Widget.
- Last-Name Basis: Well, most of the teachers are generally called by their last names in general, but Miss Nightinggale is a somwhat unique case in that she's the only teacher in the entire series who is never called by her first name by anyone.
- Manic Pixie Dream Girl: An older version, and obviously not in any romantic sense, but her behaviour definitely fits this. She encourages creativity and passion, and is always trying to liven up the school.
Miss Myrtle Widget (Elizabeth Bower)
- Cloudcuckoolander: She has some strange ideas sometimes, she dresses like a hippie and she has a definite fondness for True Art Is Incomprehensible.
- Genki Girl: An older version, but her lessons are energetic. Her "self-expression workshop" is a study in organized chaos, with students running around while Miss Widget plays the drums and shouts "Wonderful! LET IT ALL OOOOUT!"
- Suspiciously Similar Substitute: She fulfills roughly the same role as Miss Nightinggale did.
Caspian Bloom (Ian Lindsay)
- Cool Old Guy: With traces of Grumpy Old Man, but if you treat him with respect he's actually very friendly and helpful.
- Crouching Moron, Hidden Badass: He's absent-minded and often seems like he's not all there, but he's actually very handy to have around in a crisis. Not only does he have a lot of knowledge and can spot the details other people miss, but he's a pretty powerful wizard.
- Senior Sleep Cycle: He's often found asleep over his desk.
- Trademark Favorite Food: Jam doughnuts. Though he laments that they have less jam in them nowadays than they did when he was young.
Pippa Pentangle (Amanda Holden)
The headmistress of rival school Pentangle's Academy, and Hecate's old friend from school.
- Ambiguously Gay: Her relationship with Hecate.
- Cool Teacher: If her fans at Cackle's are anything to go by. Her students get doughnuts once a week, and they're very jealous.
- Girly Skirt Twirl: Does a variation of this - but with her witches' hat.
- Heel Realization: When talking to Hecate - she really did break off their friendship because she thought there was no way Pippa could want to be friends with her. Pippa cries.
- Hot Teacher
- Pink Heroine: Wears a LOT of pink.
- Pink Means Feminine
- Politeness Judo: When snarking with Hecate.
- Rules Lawyer: Has a hint of this. Points out to Hecate that dressing in pink is not - technically - against the witches' code, and uses the rules in the Spelling Bee to give Mildred a chance.
- Smart People Wear Glasses: Dons a pair to hunt through the very long rule book of the Spelling Bee.
- Trademark Favorite Food: Doughnut - especially ones with pink icing.
Charlie Blossom (Nicholas Pepper)
Frank's nephew in the 1998 series, who desires to be a witch too. He makes it to a wizard academy in Season 3. Occasional love interest for Mildred.
- Agent Scully: Doubts the existence of witches in his first episode. But he quickly comes around.
- Ambiguously Brown: His father and uncle are white but he's darker-skinned, possibly being mixed race.
- Baleful Polymorph: Gets turned into a donkey by Ethel.
- Character Development: Starts off as a bratty sceptic. By the time he reappears in Season 2, he's matured and loves Cackles.
- Commuting on a Bus: By the time he shows up for his second episode, he's apparently been visiting every other weekend.
- Continuity Drift: It's implied that Frank's sister is his mother. Season 3 has his father Ted, Frank's brother as a regular. Though since Charlie's last name was Blossom too, the first one seems to be the goof.
- A Day in the Limelight: "Up In The Air" is entirely from his POV.
- Everybody Hates Mathematics: Does not like HB's maths test.
- Muggle: And one who's annoyed about it.
- No Pronunciation Guide: Falls victim to this with the reversal spell. One word is duccio - meant to be pronounced 'doo-chee-oh'. Charlie says 'duck-ee-oh' - and turns Ethel into a duck.
- The One Guy: Desires to be this for one episode, wanting to become a student at Cackle's.
- Prince Charming: Plays him in the school pantomime.
- She Cleans Up Nicely: Averted when he's enchanted to wear the prince's costume in the pantomime. It was made for Drucilla after all.
- Ship Tease: With Mildred. They do kiss in the school pantomime in the Christmas Episode.
- Wholesome Crossdresser: A small example. He steals Drucilla's hat and cloak to pass as a student.
Agatha Cackle (Clare Coulter/Clare Higgins)
Miss Cackle's Evil Twin sister who claims she was cheated out of owning the academy. Frequently tries to take over it with her band of Wicked Witches.
- Adaptation Dye-Job: In the TV movie she has pink hair.
- Adaptation Expansion: In addition to her canon appearance, the TV series gives her more plots to try and conquer the school.
- Adaptational Early Appearance: In the 1998 TV series, she appears as a guest at the Halloween tableau and is mentioned in a conversation between the teachers. This foreshadows her plan to conquer the school.
- Always Identical Twins: She and Miss Cackle are identical, allowing Agatha to impersonate her in the TV series. Unknown if she was planning to in the books.
- Ascended Extra: Gets a larger role in both TV series. In the 2017 series she's right in the thick of it from the very first episode.
- Clark Kenting: In the Season 1 finale, Agatha is able to pose as Amelia by swapping the glasses. Ultimately it doesn't quite work, as the other girls notice her odd squint or sudden tendency to bump into things.
- Evil Laugh: Well her last name is Cackle.
- Evil Twin: To Miss Cackle, via jealousy of believing that she should have been given the school.
- Faux Affably Evil: In the 2017 series she's quite soft-spoken and polite, and can mimic her sister's affability quite well... but it's all an act. She's completely ruthless and sadistic.
- Giant Space Flea from Nowhere: In the books, she suddenly appears with a band of wicked witches plotting to take over Cackle's at the end of the first book. Slightly justified since the books are exclusively from Mildred's point of view. The 1998 series foreshadows her a little, and in the 2017 series she's a recurring antagonist from the very first episode.
- Hoist by His Own Petard: Does this to Mildred when she tries to stop them invading Cackle's - trapping her in the ground with the same spell she used on them. Millie returns the favour in the finale; defeating Agatha with the very spell she taught them in her class.
- Identical Twin ID Tag: In the 1998 TV series, she wears round thick glasses while Amelia wears horn-rimmed ones, while in the 2017 TV series, Agatha doesn't wear glasses at all, except when impersonating her sister. This isn't in the books, as they both wear the same glasses. In the TV film, Agatha was told apart by having pink hair.
- Involuntary Shapeshifting: Plans to turn all the teachers and students into frogs. Ends up being turned into a snail by Mildred.
- Loophole Abuse: Although she accepted defeat, she finds a loophole to allow her to take over the school: "On the night after a full moon in the month of July, the laws against retaliation do not apply", a little used rule only relevant to hillforts and castles.
- Sadist Teacher: Judging by the season 1 finale, this is what she would be if she got control of the school.
- Soft-Spoken Sadist: In the 2017 show. She seldom raises her voice, but she delights in cruel uses of magic.
- Twin Switch: In the season 1 finale.
- Theme Twin Naming: Only for the TV series, since Miss Cackle's first name Amelia wasn't revealed in the books.
- The Un-Favourite: Claims she was this, annoyed that Granny Cackle favoured Amelia instead of her.
- Wicked Witch: A non-stereotypical example. She just looks like a normal woman who's been living in the woods for a while.
Mistress Hecate Broomhead (Janette Henfrey)
A stern school inspector from Off Witch, who causes lots of problems for Cackle's Academy. She's also the one who trained Ms Hardbroom.
- An Ice Person: Apparently tried to encase the whole school inside a block of ice when she was a child.
- Big Bad: Whenever she shows up, she causes trouble for the school.
- Enfant Terrible: It's revealed she used to be this.
- Evil Is Petty
- Evil Mentor: To Miss Hardbroom.
- Freudian Excuse: Tried to blame her bad behaviour on a bat biting her when she was younger.
- I Am Very British: As an adult. It may be put on, as her childish self doesn't speak like this.
- Meaningful Rename: Renamed herself from Wilhelmina Wormwood to Hecate Broomhead. Naming herself after the Greek Goddess of Witches could be a coincidence. Could be.
- Names to Run Away from Really Fast: Most evil witches have last names that are like some kind of plant or weed. Wormwood is no exception.
- Prim and Proper Bun: Her hair is tied up like this. Her childhood self has pigtails.
- Why Did It Have to Be Snakes?: Claims that it's bats. To the degree that she doesn't like Miss Bat's name.
- Wicked Witch: Not a stereotypical one, but wicked nonetheless.
Chief Wizard Egbert Hellibore (Terrence Hardiman/Richard Durden/Nicholas Jones)
The Grand Wizard, for whom the Halloween celebrations are performed every year. Gets a slightly bigger role in the 1998 TV series.
- Adaptation Personality Change: A stern mentor sort in the books and the 2017 series. He starts out that way in the 1998 series too, but evolves into more of a pompous Manchild in later appearances.
- Adaptational Attractiveness: In the books, he's a typical elderly grey wizard. In the TV film, he's Tim Curry. Both TV series are more in line with the books.
- Big Good: He appears to be more powerful than the witches at Cackle's. At least they all respect him.
- Characterisation Marches On: His first episode in the 1998 TV series has him in line with his book self. The second establishes more of a funny side to him.
- Contrived Coincidence: He's the only wizard Mildred knows, and just so happens to be an old friend of the wizard-turned-frog in the school pond.
- Grumpy Old Man: He's got definite traces of this, though less so in the 1998 TV series — and of course not at all in the movie, where he's a young, if slightly pompous Tim Curry.
- Manchild: He gets incredibly into the school pantomime."That's not our Cinders!"
- The Mentor: He has his own set of wizard students.
- Not So Stoic: In the 2017 series, he's usually calm, collected and soft-spoken... until something riles him up.
- Politically Incorrect Hero: Believes that wizards are inherently superior to witches, though he's not nasty about his views. In the 2017 series he's got a bit of a Fantastic Racism going on as he doesn't have much respect for non-magical people — though again it seems to be rooted more in a belief that magic is too dangerous for them to handle safely.
- Purple Is Powerful: His default costume in the 1998 series is a purple tunic and hat. The 2017 incarnation seem to favor dark blue, though.
- Reasonable Authority Figure: Not always, but he can usually be reasoned with once he's finished blustering, and he will readily admit it if he discovers that he's been wrong about something.
- Small Name, Big Ego: Oh, he's definitely a powerful wizard and can usually back up any bragging he might partake in... but he may not be quite as awesome as he himself thinks.
- That Reminds Me of a Song: In the TV film "Anything Can Happen On Halloween", which is really just an excuse to give Tim Curry a song.
Algernon Rowan Webb (Paul Copley/Philip Martin Brown)
A wizard who has been turned into a frog, found by Mildred in the school pond. He's an old friend of the Grand Wizard and (in the 2017 series) the fiancee of Miss Bat.
- Age Lift: In the books, he was very old and grey when he was turned back to a human form. In both TV series, he's much younger.
- Ascended Extra: In the 2017 series, he stays on as the Spell Science Teacher after having been turned back into a human.
- Baleful Polymorph: Has been stuck as a frog for thirty years.
- Cool Old Guy: To contrast his friend Egbert Hellibore's Grumpy Old Man tendencies, Algernon is far more genial and friendly.
- Cloudcuckoolander: Definitely in the 2017 series, though a lot of it can be blamed on having spent so many years as a frog.
- Ditzy Genius: He's often a little confused, absent-minded and eccentric, but he's actually a very good wizard
- Early-Bird Cameo: He appears in frog form in the first two episodes of the 2017 series, giving some minor assistance to Mildred, but he's not properly introduced as the transformed wizard he is until episode five.
- Identity Amnesia: Forgets his full name after spending so long as a frog.
- Intergenerational Friendship: He's quite old and has a very strong bond with the teenage Mildred.
- Meaningful Name: Quite coincidental that the man with 'Webb' as a last name gets turned into a frog.
- The Mind Is a Plaything of the Body: To some extent. He was unable to remember his name after so long as a frog, and even after turning back into a human there are a few frog-like habits he can't quite seem to shake. It's most prominent in the 2017 series where he retains the occasional craving for flies.
- Nice Guy: You couldn't ask for a more good-natured and friendly wizard.
- Official Couple: With Miss Bat in the 2017 series.
- The One Guy: In the 2017 series, becomes the only male teacher at Cackle's.
- Promoted to Love Interest: Thankfully not to Mildred or any of the students — but in the 2017 series, he turns out to be Miss Bat's long-lost fiancee. Their romance is usually understated and in the background for the rest of the series, but it's still there; they are often seen together, and when Miss Bat at one point has a breakdown and considers quitting her job and leaving Cackle's, Algernon tells the others that if she does leave he'll have to leave along with her.
- Trademark Favourite Food:
Algernon: (spots a fly, catches it with his tongue) Mmm! That's what I love about this school, the snacks! (walks off)
- Crumpets with honey, to the degree where an episode is named "Crumpets For Tea" after it.
- In the 2017 series, all his years as a frog has given him a taste for flies. He keeps an "emergency jar of flies" on hand, and has been seen to catch flies that are flying around the school with a frog-like Overly Long Tongue.
Enid: (disgusted face) Ugh... I will never get used to that.
Mr Hallow (Patrick Pearson)
Father to Ethel and Sybil and chair of the school governors.
- Black Sheep: He comes from a family of prestigious witches. He displays no magic himself and is a real technofile.
- City Mouse: He fills this role in his first two episodes, wishing to modernise the school.
- Corrupt Corporate Executive: Played with. While he has many elements of this, he's not shown to be corrupt in any way and just wants to improve the school. The girls even say as much - but they'd rather just have the school the way it is.
- Eating the Eye Candy: Miss Bat and Miss Drill do so through the Great Hall's keyhole.
- Horrible Judge of Character: Appoints Mistress Broomhead as a suitable replacement for Miss Cackle, presumably because of this trope.
- No Celebrities Were Harmed: Especially considering that the show aired in the late nineties, the resemblance to Tony Blair is hard to ignore. In addition to looking a lot like Blair, Mr Hallow is also slick, flashy, and an ardent moderniser.
- Not So Above It All: Check out his dancing in the Season 2 finale.
- Unwitting Instigator of Doom: Twice. Firstly is his attempt to set up an internet connection in the school - giving Bonzo a chance to brainwash everyone around the world. Secondly is his appointment of Mistress Broomhead as Miss Cackle's replacement - not knowing what bad news she really is.
- Villainy-Free Villain: Causes a few problems for the school whenever he appears, but never out of maliciousness.
Merlin "Loppy Luggs" Langstaff (Guy Witcher):
One of Chief Wizard Hellibore's students who is picked on by the others.
- Affectionate Nickname: Mildred still calls him 'Loppy' as a term of endearment.
- Butt-Monkey: He's picked on by Baz and Gaz. Even the girls look down on him.
- Give Geeks a Chance: He's the geekiest of the wizard students, and gets a friendship (that may be something more) with Mildred.
- HeelFace Turn: Throughout "Sweet Talking Guys" he goes from an (unwilling) helper of Baz and Gaz to a friend of Mildred's.
- Nerd Glasses: They add to the effect. Doubles as Smart People Wear Glasses.
- Not What It Looks Like: Maud notices that he and Mildred are spending a lot of time together. It's actually because he's helping her hide Tabby from the teachers.
- Only Known by Their Nickname: He's called 'Loppy Luggs' by Baz and Gaz, and just 'Loppy' by Mildred.
- Secret Keeper: On the school trip, he's the only one who knows Mildred has brought Tabby.
- Ship Tease: Not as much as Mildred has with Charlie, but the other girls tease her about him and they get the wrong idea when she spends lots of time with him.
- Token Good Team Mate: In "Sweet Talking Guys", he's the lone Nice Guy among the trio of wizards.
- Took a Level in Badass: By the time the girls visit Rowan-Webb, he's able to turn himself into a lizard and back and his magic has got much better.
Barry "Baz" Dragonsbane (Paul Child) and Garry "Gaz" Grailquest (Anthony Hamblin):
- The Bully: Towards Merlin and the girls.
- Disproportionate Retribution: They start an Escalating War after Hellibore embarrasses them in front the girls.
- Foil: To Fenny and Griz - two older students Only Known by Their Nickname and always together, but bullying and troublesome instead of kind and helpful.
- I Ate WHAT?!: Baz is revolted when he has to drink Miss Bat's fermented pond slime. Gaz by contrast loved the barbecued bats' wings.
- The Rival: To Fenny and Griz, for the reasons described above.
- Straw Misogynist: They're quite sexist in their first episode. Unlike Hellibore, they're not portrayed sympathetically.
- Those Two Guys: They're always together and always causing trouble.
- Villain Team-Up: With Ethel and Drucilla from time to time.
Julie Hubble (Nicola Stephenson)
Mildred's mother, who's left out of most incarnations of the story, but is a recurring character in the 2017 series. Not a witch herself, but immensely proud of her daughter for being one. In season 3, she becomes the new art teacher at Cackle's Academy.
- Deadpan Snarker: Usually good-natured, but she gets in a few digs from time to time — often at Miss Hardbroom.
- Drunk with Power: When Mildred uses a wish-granting potion in season three to give Julia magic, it takes two episodes for the power to go to her head, and she starts turning students and teachers into clay figurines when they say things she doesn't like. Mildred manages to invoke an "I Know You Are in There Somewhere" Fight to bring her mother to her senses long enough to take the power back.
- Good Parents: She's a kind, understanding and loving mother to Mildred; while she obviously can't take a huge part in her daughter's life while she's at Cackle's, she never hesitates to step in and help out if the situation calls for it.
- Hidden Depths: She turns out to be so well-informed about witch culture and the witch's code that Mildred at one point suspects that she secretly is a witch after all. Turns out she just pored over Mildred's academy rulebook.
- Like Mother, Like Daughter: More together and less of a Klutz than her daughter, but it's easy to see where Mildred got her spirited nature, kind heart, cheeky sense of humour — and even her talent for trouble and lapses of poor judgment.
- Mama Bear: Don't mess with her Millie, even if you are magical and much more powerful than her.
- Muggle: Doesn't appear to have any magical talents of her own, and was in fact quite surprised to discover that magic exists. Turns out that she is, in fact, descended from a witch, but thanks to a sacrifice her family has been without magic for twelve generations. Julie was unaware of this, and only learned of magic when her daughter Mildred became a witch.
- "The Reason You Suck" Speech: On two separate occasions she gives one to Miss Hardbroom of all people, telling her just how unimpressed she is with her."All right, Mrs 'I'm-so-magical,' if you think you're so much better than me, how about conjuring up some manners?"
- Unfazed Everyman: While not the main character, she's definitely this in her meeting with witch society.