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List of Casper's Scare School characters facts for kids

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These are a list of characters in the computer film and TV series Casper's Scare School.

Main characters


Casper is new to the school, serves as a main character. He is a ghost who is friendly and kind. He lives with his three uncles, Stretch, Stinkie, and Fatso. In Scare School, Casper's closest best friends are Mantha, an independent Zombie girl, Ra, a not too smart Mummy whom he loves like a family and he continuously faces the dangers of Thatch, a vampire bully and the Headmasters, Alder & Dash.

Casper is voiced by Devon Werkheiser in the film, Robbie Sublett in the first season and Matthew Géczy in the second season.


A mummy far away from his tomb but he fits in at Scare School. He is more than 2000 years old (in the episode 2,500 Candles for Ra he celebrates his 2500th birthday) and is royalty. His full name is Ra Neferhefu Saraoftonni Sereftefnefgeranebu which is revealed in 2,500 Candles for Ra. Ra also once disobeyed his parents and forged his Dad's signature on a permission slip to go with his friends on a camping trip. He was caught but his parents allowed him to stay in Scare School. Another time, Ra, with Casper's help, showed off in front of students, making him popular, which went to his head. Thatch dared him to make a jump over the Void of lost Souls, but he didn't go through it and admitted to being a fake. In the episode Curse of the Sandwich it is revealed that Ra can also be quite gullible. Throughout the episode Ra was convinced that he was turning into a vampire after accidentally taking a bite out of Thatch's sandwich despite Casper and Mantha telling him he wasn't. When Thatch overheard Mantha and Casper talking he convinces Ra that he was becoming his mindless minion. Casper was able to convince Ra that he wasn't becoming a vampire when he pointed out Ra still had his reflection in a mirror. Of course Thatch took out the mirror in the middle of the night and by morning Ra was now convinced he was Thatch's mindless minion when he couldn't see his reflection. He was only able to finally be convinced he wasn't a vampire after seeing his reflection in a pool of water inside the caverns. His best friends are Casper, Mantha and Jimmy. Ra is allergic to poison and flowers. He is also a good singer and dancer.

Ra is voiced by Kendré Berry in the film, Carter Jackson in the first season and Sharon Mann in the second season and sounds similar to Aelita Schaeffer from Code Lyoko.


A zombie. Mantha is able to remove parts of her body at will. Despite lacking any physical connection between her head and those parts of her body removed in this fashion, Mantha remains able to control said parts at all times (e.g., she is able to see using eyes removed from their sockets and detached from their optic nerves). She is sometimes unable to keep them attached to her body, Mantha once required a replacement for her arms. She successfully proves that zombies can be scary too by defeating Thatch in a scaring contest, a feat accomplished by her luring of unsuspecting humans into Casper and his Uncles' haunted house. Mantha is very proud to be a zombie and sets out to prove that zombies are more than just "lumbering, mindless things that fall apart". In the episode You Oughta Be In Pictures she helped a group of zombies (not realizing they were actors filming for a movie) fight off some humans (also actors) that were attacking because she wanted zombies to defend for themselves and not let others push them around anymore. In the end of the episode she was the inspiration for 'Z, Queen of the Zombies' for a movie, which could help the reputations of other zombies. Her best friends are Casper, Ra and Jimmy.

Mantha is voiced by Christy Carlson Romano in the film, Vanessa Bellardini in the first season and Mirabelle Kirkland in the second season. Her voice is similar to Yumi Ishiyama from Code Lyoko.


Thatch is the school bully at Scare School who is a vampire, mainly an antagonist in the film. He says he is, and seems to be popular, but a jerk instead, as he is conniving, selfish and mean. He is always looking for things to exploit and use to his advantage. His gang usually includes Slither, Dummy Girl, Mosshead and occasionally Harpy. In the film, he deputized the Skeletwins (Mickey and Monaco) to help him watch over Casper.

Thatch displays vampiric traits, mostly his ability to shapeshift into a bat and having no reflection. Unlike most stereotypical vampires, all of his teeth are sharp and he seems to have no aversion to sunlight as he has been in Deedstown several times during the day. He apparently has acid for tears as he once cried for not having the respect of his gang, his tears burning holes through his cape.

Although he's a bully, once in a while he finds common grounds with Casper and his friends, and even occasionally helps them (he even wished Ra a happy birthday), but goes right back to being the way he was before, as if nothing happened. Thatch likes to collect toy ducks.

Thatch has grey skin, black hair streaked with a single line of white, violet eyes, pale black lips. He wears a white shirt and a black cape with black jeans with a chain

In the film, Thatch was voiced by Matthew Underwood and in the TV series, voiced by Carter Jackson in the first season and Matthew Géczy in the second season. Geczy's portrayal gives Thatch a voice similar to his previous role Odd Della Robbia from Code Lyoko.


A green ghost who is the large-and-in-charge ruler of the underworld, usually seen terrorizing fleshies or at the scare school, he is feared by all, Alder & Dash especially. In the movie it is revealed that the reason he is so tough on Casper is because he used to be just like him when he was his age. Kibosh once posed as a monster that steals creatures' powers with the use of a magic crystal in order to get Scare School to work together, but things went out of control when his leprechaun servant Raznik stole the crystal and tried to take over. But he was thwarted and Kibosh apologized for the whole mess and congratulated the students on their teamwork even without their powers and used the crystal to restore them to their rightful owners.

He is voiced by Kevin Michael Richardson in the film, Mike Power in the first season and Matthew Géczy in the second season.

Fatso, Stinky and Stretch

Their bio will be revealed in Casper's bio. These incarnations of the Ghostly Trio is unique as they actually treat Casper as their nephew, and not a slave they're disappointed of; though they still love scaring humans and fear Kibosh. They make several appearances during the series, sometimes to make money or to help their nephew.

Dan Castellaneta voiced Stretch, John DiMaggio voiced Stinky and Billy West voiced Fatso in the film. In the TV series, Fatso is voiced by Joe Sheridan while Stinky and Stretch are voiced by Matthew Géczy.

Jimmy Bradley

Casper's human friend. Casper would occasionally leave the school to hang out with him. Jimmy is also friends with Ra and Mantha. He doesn't appear to have any human friends. His parents are at first unaware of their son's friendship with a ghost, but Jimmy's dad finds out in the special "Power Outage". Jimmy is one of the few humans who ever visited scare school. In the episode "A Real Little Monster", Casper took him to scare school, disguised as a creature named Jimbacca.

Jimmy is voiced by Brett Delbuono in the film, Adam Carter in the first season and Mirabelle Kirkland in the second season. His voice in the second season was more like the movie, unlike the first season and sounds similar to Milly from Code Lyoko.

Alder and Dash

Scare school's 2 headed headmaster(s) who wants world domination. Alder, the shorter right head, liked the quarter behind the ear trick and Dash, the taller left head, liked music. Alder can be seen with a fez and Dash can be seen with a long straight forehead topped with an Academic Cap. Dash is the smarter, more conniving of the two, while Alder is slower on the uptake, but occasionally has good ideas. They are both rude and manipulative, and delight in causing the students misery. In the movie, they were fed up with being the headmasters of Scare School and concocted a plan, and a potion, to usurp Kibosh and take over the underworld. Their plans were stopped by the return of their "Ankle" (Aunt & Uncle), Belle and Murray. Their names are a pun on balderdash.

Alder is voiced by James Belushi and Dash is voiced by Bob Saget in the film. Alder is voiced by Graham Thomas in the first season. Dash is voiced by Robert Williams in the first season. Matthew Géczy voices both of them in the second season.


Wolfie is a shy but clever werewolf and one of Casper's closest friends, although the relationship seems on and off as he is not seen in Casper's company as often as Mantha or Ra, possibly because he's not an undead monster like Casper (Ghost), Mantha (Zombie), or Ra (Mummy). Wolfie is just like a puppy he likes to fetch, chase his tail and can't resist bones. He is usually picked on by Thatch and his gang, but every full moon, he goes berserk and has to eat in the corner of the cafeteria for the other students' safety; when this happens he grows 15 times his original size and he becomes very strong, very fast, and out of control and ferociously vicious. He once conducted an experiment in efforts to capture and harness moonlight when the moon was full, but it caused an energy surge that caused everyone in the school to act the opposite of how they normally would. Wolfie turned savage while Thatch turned nice, and Mickey and Monaco both turned smart. Casper, Thatch, Mickey and Monico had to find a way to reverse the effect without getting eaten by Wolfie. Wolfie once walked a mile in another's shoes when he turned into a human ("fleshie") and was banished from the school. Unfortunately, Alder & Dash plotted to turn him to stone, fearing he may reveal the secrets of Scare School to the humans. Luckily, Casper discovered that, by making Wolfie angry, he could become a Werewolf again. And Thatch, while insulting and scaring some other humans, got Wolfie angry when he had learned more about humans, and angrily stood up for them, bringing him back to his werewolf self, and he was allowed back in the school.

He is voiced by Pat Fraley in the film, Johann Geoffrey Nelson in the first season and Matthew Géczy in the second season.

Prof. Thurdigree Burns

Scare school's dragon science teacher who thinks sweat is "scare juice". His name is a play on words for "Third-degree burns" which are caused by fire or intense heat, which he is able to breathe at will. He has a tendency to bark untrue facts about "Fleshies" (the creatures' word for humans), which Casper politely tries to correct, which only aggravates Burns. He once attacked a restaurant with a Medieval theme, mistaking the employees and customers for actual knights as an act of revenge for his ancestors. But thanks to Casper, who'd come to "help" Burns, no one was injured and Burns got a satisfied "victory". He even saved Casper from expulsion at Alder & Dash's hands when they thought Casper had taken off, but Burns said Casper had been assisting him.

He is voiced by Maurice LaMarche in the film and Matthew Géczy in the second season.

Hedy Hopper

Scare school's history teacher who can be only seen in a crystal ball with her head floating together with a small table, and she possesses the power of Levitation. She greatly resembles Madame Leota of Haunted Mansion fame. She's in love with Frankengymteacher. Her name is probably a play on Hedda Hoppper’s.

She is voiced by Debi Derryberry in the film, Goldie Zwiebel in the first season and Sharon Mann in the second season.

Frankengymteacher "Coach"

Scare school's Frankenstein gym teacher. His lightbulbs glow red by anger. He usually tries to teach the students to avoid angry villagers with torches, made as a reference to Mary Shelley's Frankenstein, but usually scares himself through a wall (literally). He's in love with Hedy Hopper.

He is voiced by John DiMaggio in the film and Matthew Géczy in the second season.


Cappy is the captain of the flying pirate ship which provides the main form of transport between Scare School and the mortal world. His species is not revealed but judging by his skin color he is some sort of undead creature. He dresses in a traditional pirate costume, has a hook for a right hand and has eye patches in front of both his eyes given he is blind but he needs this blindness to use his special sensory powers to navigate the ship. He has a talking parrot called Beaky who is apparently more intelligent than he is and who often helps him.

He is voiced by Maurice LaMarche in the film and Joe Sheridan in the second season.

The Gargoyles

The Gargoyles are somewhat of a security force for Scare School, as well as disciplinarians to the students. They also have a magic brew that turns whomever's dipped into it into a statue, which they usually use on Fleshies.

Other characters

Mickey & Monaco

Mickey & Monaco are twins who are a, usually nice, pair of skeletons. The twins are Thatch's henchmen until in the end of the film. The make-up on the twins faces resembles Mexican Day of the Dead calavera. They're the show's example of vain stereotypical dumb cheerleader girls who always talk about make-up, their hair, and their weight even though they are just bones, etc. Mickey is blonde while Monaco dyed her hair pink. In the second season they are revealed to have the ability to share bones with each other and to control their bones when they are detached, like Mantha can with her body parts, although they find it easier when they are angry.

Mickey is voiced by Candi Milo and Monaco is voiced by Nika Futterman in the film. In the first season, Shelley Shenoy voiced Mickey and Juanny Paulino voiced Monaco, and in the second season, both of them were voiced by Sharon Mann

The Cafeteria Thing

A purple monster that resembles an octopus who is usually seen in the cafeteria serving the students food at meal times. The only part of her seen on-screen most of the time are massive, magenta-purple tentacles and her dialog is restricted to shrieking and purring. Her whole body is first seen in the episode Disarmed and Dangerous when she is shocked by Mantha's temporary tentacle arm. She is sensitive to criticism as seen in Master Blist when Master Blister criticizes her which causes her to go berserk wrecking the school. She calms down when Alder praises her swamp burgers.

The Nurse

The Scare School Nurse is a Gorgon, evident by her snakes for hair, but her gaze doesn't turn people to stone. But that does not mean she isn't scary because she often prescribes painful or dangerous treatments for her patients, which she seemingly has no idea of the fear she instills.

The Sea Monster

The Sea Monster lives in the moat around Scare School. He's a long, purple, reptillian serpent with a dragonish head, but despite his monstrous demeanor he's actually friendly but pretends to be vicious. He's also friends with Casper.


Mosshead is usually a background character, and a part of Thatch's gang. Casper once invited him to his manor for vacation but he proved to too much of an annoyance, but he and Casper made amends. He also finds out Casper's friends with Jimmy. He seems to be some sort of swamp creature, speaks with a southern accent, and is always praising Thatch.

He is voiced by Kevin Mahr in the first season and Matthew Géczy in the second season.


A background character who is part of Thatch's gang. He appears to be Goth, and some kind of snake creature, hence his name. He has tentacles for arms, one of the few creatures that have tentacles. He has a crush on Dummy Girl. Slither and Dummy Girl's relationship were mentioned of romance in the Casper's Scare School franchise, as well as Mantha and Casper's relationship, only more friendship related.

He is voiced by Matthew Géczy in the second season.

Dummy Girl

A background character who is part of Thatch's gang. She's a living marionette/puppet/ventriloquist dummy. Her special "creature" power is her ability to be funny, although the other students said they wouldn't be able to tell if she lost it, meaning they probably don't think she's that funny. She has a crush on Slither. Speaks with a Brooklyn accent.

Dummy Girl is voiced by Shelly Smith Shenoy in the first season and Sharon Mann in the second season.


A background character who is basically your typical hunchback ogre monster. He is friends with Casper and gets stuck with the job of turning on and off the lights and ringing the school bell, the latter he hates doing. In one episode it is revealed that Quasi wants to be a professional ballet dancer but is unable to because he has two left feet. He speaks with a French accent. Quasi is inspired by Quasimodo from The Hunchback of Notre Dame.

He is voiced by Johann Geoffrey Nelson in the first season and Matthew Géczy in the second season.

Flyboy Maggoty

A background character who got stuck between the teacher's door. His name is mentioned by Ra. In one episode, his father told flyboy and his friends that he used to be human, and then tried changing himself and his son into humans but stopped after realizing that his son liked being a fly.

Flyboy was voiced by Jason Harris in the film and Shelly Smith Shenoy in the TV series' second season.


Triclops is a three-eyed shy girl, but is usually a background character. She was once a victim of Thatch, who was suffering a toothache, after he stuffed her in a cupboard. Although she is a background character, she is friends with Casper, Ra and Mantha.

Triclops' first and only main role is in the episode "Triclops: Mistress of Dark" where she takes revenge of Thatch, Mickey and Monaco for their bullying and Alder & Dash for confiscating her balaclava and supposedly burning it.

Triclops is voiced by Sharon Mann in the second season.


A student with a jack-o-lantern for a head, usually a background character. Like Mantha, his head sometimes falls off. He can also breathe fire, but to a lesser extent than Prof. Thurdigree Burns.

He is voiced by Scott Menville in the film and Matthew Géczy in the second season.


A female bird creature student and Ra's one-time girlfriend, usually a background character in which she is sometimes part of Thatch's gang. She first appears in the film, where she was in the Valley of the Shadows. She is shown to not usually speak, like the other students, with her dialogue limited to clucking, however she speaks in the second season. She dated Ra in a dance, initially too forceful, but with Casper, Mantha, and Wolfie's help, she and Ra were crowned the dance's king & queen, after displaying excellent dancing and teamwork.

Harpy is voiced by Debi Derryberry in the film, Justin Pavia in the first season and Shelly Smith Shenoy in the second season.


Blodge is a monster made of green slime who things can flow through similar to how Casper can go through walls. Without his flowing power his slime is clear as reveaved in Power Outage: Part 2 when his power is stolen.


Spitzy is the aunt of the Ghostly Trio and the great-aunt of Casper. She was banished to the Valley of the Shadows for being too friendly. She loves her nephews dearly. She often spits when she eats or drinks.

Spitzy is voiced by Phyllis Diller in the film.

Bell and Murray "The Ancle"

Alder and Dash's aunt/uncle (ancle). Murray likes playing magic tricks and Bell loves singing. They look a lot like Alder and Dash except their clothes.

Bell and Murray are voiced by Captain and Tennille who looks and sounds like them.

Banana Lady

She works at a grocery store dressed up as a banana giving free samples, first seen in the movie, she kept saying "banana cheese." She's apparently not happy with her job. She got scared by Fatso, and later seen running from the Ghostly Trio. Once in the show she says "would you like a poo with that!"

Banana Lady is voiced by Debi Derryberry in the film.


A leprechaun and the servant of Kibosh, Razzik, sick n' tired of being treated like a slave, stole a crystal from Kibosh to steal the powers of the creatures in Scare School, stealing Thatch's power to turn into a bat, Heady's Levitation, Frankenteacher's Franken Strength, Burns's Fire-breathing, Wolfie's Werewolf powers, Mantha's Zombie powers, and scores more. But what he wanted was Ghost powers so no Creature would be able to escape him (A Ghost's Intanability), and take over the Underworld. The students figured out Razznik's weakness as a leprechaun: He must obey the one who gets his Pot of Gold at the End of the Rainbow. Exploiting this, the students stopped the greedy leprechaun and everything was set right while Razzik was imprisoned.


A bully who picks on Jimmy. His appearance seems inconsistent; he is either a brown mullet-haired boy ("What Possessed You?") or a blond skater ("Shrinky Dust" and "A Real Little Monster"), however both boys appear to be seen together ("Bands On The Run", "What Possessed You?" and "Power Outage Part 3") so its likely they have the same name. The mullet-haired Norman first appeared in the movie eating in the store, and was scared away by the Ghostly Trio. The blond Norman has a sister named Bethica who would stop him from bullying or threatens to tell their parents. The mullet-haired Norman appears to be pretty much aware of Casper's relationship with Mantha as he threatened to mail her head to China, which made Casper show him how to get back home ("What Possessed You?").

Comic exclusive characters

Jackie Hyde

A new student that appeared in the second story of the first issue ("The New Kid"). He may appear human, but in reality he becomes monstrous when frightened or angered. Jackie is somewhat a parody of Edward Hyde from Dr. Jekyll and Mr. Hyde.

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