Counterclockwise (starting from the bottom): Hedgehog, Oscar, two aliens, Pepper, Oliver, Alice, Susie, Betsy, Lucy, Lem, Alexa, and Max. Center: Howard.
Characters found in Summer Camp Island.
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Main Characters
Oscar Peltzer
Voiced by: Justin Felbinger (pilot), Elliott Smith (Season One), Asher Bishop (Season Two), Antonio Raul Corbo (Season Three-)
A mildly neurotic elephant and Hedgehog's BFF. His magical identity is a Glow Worm.- Adaptational Nationality: Is British in his original iteration.
In both the pilot and the series he's an American Jew (though his dad is still British). - Ambiguously Jewish: He has a Jewish last name, and his mother has the stereotypical Jewish Mother personality and voice.
- Audience Surrogate: He's the POV character and the one asking most of the questions.
- Book Dumb: A mild example. Although Oscar is not generally presented as unintelligent, he seems to have some trouble with reading and spelling, as mentioned in "Pajamas Party" and "Midnight Quittance".
- Everyone Has Standards: In "It's My Party", while he doesn't like Susie, he believes no one deserves to be alone on their birthday, even if it is Susie. This is because no one, including Hedgehog who had other plans, attended his fifth birthday party.
- Fatal Flaw: His dependency on Hedgehog. They both spend so much time together that he starts relying on Hedgehog to do most of the work, and he often needs her to tell him what to do. His need for Hedgehog drives him to do reckless things to ensure that their friendship will never be broken. Susie notices this and tries to separate them in "Susie's Fantastical Scavenger Hunt".
- Honorable Elephant: See Nice Guy below.
- Informed Species: Oscar was confused for a tapir by fans until Word of God clarified otherwise. In-universe, guesses go even further off the mark: in "Popular Banana Split", both Cinnamon Raisin Toast and a group of marshmallows think he's a potato.
- The Klutz: Oscar is always bumping into things, to the point where several of the other campers made a sign counting down how many days have passed since Oscar last collided with the scenery. The default is "0".
- Masculine Girl, Feminine Boy: Oscar is this with Hedgehog.
- Momma's Boy: He's shown to be this in the pilot and official first episode.Susie to Oscar: I especially don't want to hear from you. (mockingly) Mommy's special little guy.
- Nervous Wreck: He gets nervous often.
- Nice Guy: Easily one of the nicest campers on the island.
- Platonic Life-Partners: He and Hedgehog are very close.
- Red Oni, Blue Oni: Red to Hedgehog's blue, as seen in "Fuzzy Pink Time Babies".
- Toilet Humor: After taking a medicine, he got rid of the gas from the pies he ate in a pie eating context through farting.
- Unwanted Assistance: Despite his good intentions when attempting to fix things between him and Hedgehog, he tends to make things worse and doesn't understand that she just wants her space. This is lampshaded in "Campers Above the Bed" and serves as a plot point in "Radio Silence".
- Vocal Evolution: His voice starts sounding a little deeper in Season 2, likely due to his voice actor hitting puberty. This was undone once his original voice actor got replaced.
Hedgehog
Voiced by: Ashley Boettcher (pilot), Oona Laurence (series)
Oscar's best friend and the more outgoing of the two. I'll leave you to guess her species... Her magical identity is both a witch and a werewolf.- Abusive Parents: A fairly low-key example. In "Fuzzy Pink Time Babies", Hedgehog's father Jim forces her to enrol in business camp, despite the fact that this would tear her away from Oscar. Hedgehog is reduced to tears at this prospect and eventually has to tell her father to back off. Meanwhile, in "Momsoon", Hedgehog's mother calls in on Hedgehog's radio show to harangue her about how Hedgehog is not living up to her ridiculously high standards. Hedgehog reacts by asserting her autonomy as a separate individual. It's made clear that Hedgehog's parents want her to be successful, but their methods leave their daughter extremely unhappy.
- The Ace: Despite being normal with no magic powers like the counselors, she's slightly better than anyone else in any other activity.
- Boyish Short Hair: Adds to her
Viewer Gender Confusion. - A Dog Named "Dog": Hedgehog is a hedgehog. Notably, she's the only camper who has this kind of name. On that note...
- Dub Name Change: ...her name varies depending on the language being spoken; it's "Scricciola" in the Italian dub, for instance. This is a play on "riccio", the Italian word for "hedgehog". Other dubs are more direct, such as the Spanish version, which gives her name as "Erizo" - literally, "hedgehog".
- Some dubs, e.g. the German one, don't translate her name.
- Generation Xerox: She resembles her mother, who also wears a cone hat; her mother's hat is black.
- Informed Species: She's supposed to be a hedgehog but looks more like an alpaca or a weasel. Lampshaded somewhat in "Monster Visit" when the monsters' Godmonster misidentifies Hedgehog as a rat.
- Lady Looks Like a Dude: Hedgehog has a deep voice, tomboyish demeanor and a lack of stereotypically feminine features, which are offset somewhat by her skirt. Even then, this isn't enough to clue some in; in "The Library", resident dragon Stuart addresses Hedgehog as 'sir'.
- Masculine Girl, Feminine Boy: She's this with Oscar.
- Metalhead: She's revealed to be this in "Campers Above the Bed", particularly to yeti metal. It's a way for her to get her aggression out.
- Odd Name Out: She's the only main character to be named after her species.
- One of the Boys: She's a tomboy who mostly hangs around boys.
- Our Werewolves Are Different: Hedgehog becomes a werewolf in the aptly-titled episode "Hedgehog Werewolf", and by the end of the episode she chooses to remain so.
- Platonic Life-Partners: She and Oscar are very close. In "Midnight Quittance", their friendship is shown to last well into old age.
- Quirky Girl, Quirky Tux: Hedgehog wears one to the food prom in "Popular Banana Split", along with some barrettes.
- Red Oni, Blue Oni: Blue to Oscar's red, as seen in "Fuzzy Pink Time Babies".
- The Smart Guy: Hedgehog is very into science, and often utilizes it to solve problems.
- Toilet Humor:
- After eating a prune, she farted and claimed it was the sofa.
- Her participation in a pie eating contest didn't look very appetizing, either and she got rid of the gas from the pies through burping.
- According to her diary, she let one rip during leapfrogging with Oscar.
- On a local firefighter's fundraiser's pancake breakfast, after she contracted Oscar's strange curse (of how bad things will happen to him if he doesn't eat before 9 am), she let out an insanely loud and long fart everyone at the breakfast heard.
- Tomboyish Voice: She has a low voice that verges on boyish, especially when expressing enthusiasm.
Main Campers
While there are other campers on the island, the show focuses mostly on these campers due to them being friends with Oscar and Hedgehog. Max
Voiced by: Thomas Vaethroeder (pilot), Ramone Hamilton (series)
A laid back bat and general cool guy. He sometimes hangs out with Oscar and Hedgehog. His magical identity is a vampire.
- Adaptational Nice Guy: Pilot!Max is a generic cool kid who thinks Oscar is a baby. Show!Max is a lot nicer and generally has a good opinion of Oscar.
- Adaptational Species Change: Max was a badger in the pilot, but is a bat in the show.
- Bat Out of Hell: Usually a Nice Guy but gets pegged into a villainous vampire role by the cursed video game.
- Big Eater: Downplayed. While he isn't shown eating a ton of food, he is shown snacking on something in most of his appearances.
- Big Man on Campus: Max is generally well liked and gets along with just about everyone at camp.
- Demoted to Extra: After he states he doesn't like Hedgehog in that way, he all but becomes window dressing. Receiving no focus episodes and being the only camper to discover his magical identity offscreen.
- Informed Species: Max is supposed to be a bat but looks more like a Husky dog, a hyena, or a badger.note This is probably a holdover from the pilot, where he is supposed to be a badger.
- Literal-Minded: In "Oscar and Hedgehog's Song", when Hedgehog says that they still have a few bugs to work out in their plan, he thinks that their talent show entry is bugs that work out, until he sees Oscar's and Hedgehog's musical number.
- Out of Focus: Goes from essentially being Oscar and Hedgehog’s third wheel to having basically no major appearances in the latter seasons.
Pepper Corn
Voiced by: Sam Lavagnino (Seasons One-Five) and Julian Edwards (Season Six)
A sleep prone and jumpy panda. His magical identity is a cloud person.- Actor Allusion: Sam Lavagnino, who voices Pepper, also voiced Baby Panda and Baby Grizz in the pilot episode of We Bare Bears.
- A Day in the Limelight: "Pepper's Blanket is Missing" and "Pepper and the Fog".
- The Baby of the Bunch: Pepper is the youngest male among the main campers.
Word of God has revealed that his age is nine, though this is upped to ten in "Pepper and the Fog". - Expy: Of Linus van Pelt from Peanuts.
- Hidden Depths: Pepper shows in-depth knowledge of art theory in "Puff Paint" and is shown to love reading in "The Library".
- Punny Name: Pepper... Corn, as revealed in "Mop Forever".
- Sleepyhead: He is usually seen taking a nap whenever he is present.
Lucy Thompson
Voiced by: Indie Lemeth
A female horse and camper. Her magical identity is a yeti.- Bookworm: She's usually seen reading books.
- Deadpan Snarker: She usually makes snarky comments about the matter of the moment.
- Expy: Has a slightly similar facial appearance to the Read family from Arthur. She's even got Arthur's glasses and DW's hairstyle.
- Tomboy and Girly Girl: Seems to be the girly girl to Alexa's tomboy.
Oliver
Voiced by: Andre Robinson
A dog who's usually seen playing musical instruments. His magical identity is a monster.- The Generic Guy: Besides the fact that he plays musical instruments, there is really nothing about his personality that makes him stand out among the cast.
- Green Thumb: In "Pepper's Blanket Is Missing", he is shown growing musical notes in a piano patch.
- Irony: Despite being a musician, in "Oscar & Hedgehog's Melody", he does tarot card reading at the talent show.
Alexa Mongello
Voiced by: Alexa Nisenson
A giraffe and the older sister of Lem. Her magical identity is a giant.- Tomboy: She's shown to enjoy doing sports.
- Tomboy and Girly Girl: Seems to be the tomboy to Lucy's girly girl. She's also the tomboy to her little sister Lem's girly girl.
- Tomboy with a Girly Streak: In "Oscar & Hedgehog's Melody", her talent for the talent show is knitting.
- Tomboyish Baseball Cap: She's usually wearing a red beanie, but in "Chocolate Money Badgers", she wore a red cap for the entire episode before going back to wearing her beanie in later episodes.
- Tomboyish Ponytail: She's a tomboy who wears her hair in a ponytail.
Lem Mongello
Voiced by: Daphne Thomas (Season One), Mattea Quin (Season Two-Four)
The younger sister of Alexa. She snuck into the camp with a fake invitation and is the only camper without a magical identity.- The Baby of the Bunch: She's the youngest female and the overall youngest among the main campers. Word of God has revealed that her age is five.
- Girlish Pigtails: Fitting, since she's the youngest of the group.
- Punny Name: Lemon Jello.
- Tomboy and Girly Girl: She's the girly girl to her big sister Alexa's tomboy.
Camp Counselors
All Three
- The Ageless: All of the three Summer Camp Island witches are revealed to be this. Susie has been around since at least 1892 and Alice and Betsy has been around since at least 1972. "Light as a Feather" reveals Susie and Alice were in the same witches class together, along with Ramona. In "Just You and Me", Susie reveals she's 400 years-old.
- Bizarre Belching: Since the three witches became immortal resp. unaging, their memories and regrets sometimes slip out when they burp (the more traumatizing ones stick around, the less severe ones evaporate). These "burp ghosts" are also, according to Ramona, "pure past" (likely due to the immortality/unaging of the burper) and kill Jabberwocks, who are "pure future" (because they guard the time stream i.e. the future by trying to destroy anyone who enters "frozen time").
- Mildred, Susie's sister, who is also an immortal witch, farts ghosts.
- Cheaters Never Prosper: Susie and the witches (but mostly Susie) try to cheat at softball to get out of a chore. Oscar holds out on cheating for a while but starts when it's clear that they aren't going to have a fair game unless they do. In the end Oscar realizes that things have spiraled out of control and calls things off, and all three witches have to do the chore anyway.
- Eye of Newt: Some of their spells require strange ingredients.
- Nice, Mean, and In-Between: The witch counselors, with Betsy being the Nice, Susie the Mean, and Alice In-Between. In "Monster Babies", Oscar even states that Alice is the second nicest counselor and the second last meanest and Betsy is the first nicest.
- Robe and Wizard Hat: All three of them wear standard, pointy witch hats.
- Shapes and Symbols Tropes: Each witch has a necklace with a unique symbol that appears in their magic. Susie has a pink star, Alice has a green heart, and Betsy's is a yellow, crescent moon.
- Teens Are Monsters: The monsters don't like them for being this and witches.
- Voluntary Shapeshifting: At least two witches were shown to be able to shapeshift at will (Susie shapeshifted into Oscar to find out how people really thought about her on a party, Betsy transformed into a snake to test Hedgehog's mental focus during her witchcraft lessons).
Susie McCallister
Voiced by: Julia Pott
Cat, head counselor, and head witch. Also a complete jerk.- Affably Evil: Invoked. Her speech to new campers sounds rather threatening despite the ostensible fact that it's supposed to be inviting; the Sun itself points out that "it gets scarier every year". When compared to the other two witches, yes, Susie is generally mean in personality, but she isn't truly evil.
- Affectionate Nickname: Susie, along with Alice, calls herself "potato".
- The Ageless: Susie has apparently been fifteen since at least 1892. She apparently chose to stay fifteen while her best friend Ramona chose to age.
- Alpha Bitch: Susie is this among the witches, and is mean to everyone else.
- Ambiguously Gay: Though never stated outright, her feelings towards Ramona definitely can be read as being romantic in nature.
- The Antagonist: Seems to be hellbent on making life miserable for the campers. She only does her job for their parents' money and shoehorns her massive ego into anything even remotely involving herself. Word of God states that while she's not a villain, Susie does full the role of antagonist quite nicely.
- Attention Whore: Big time. Susie replaces a film for movie night to plug her performance in the annual talent show, which she wins every time... without putting in much effort as an actor, of course.
- Bait the Dog: When it looks like she's about to do something nice to the campers or is touched by their actions, she immediately reveals her nasty side to them.
- Berserk Button:
- She does not like to be called "mom".
- Breaking promises and abandonment, as shown in the "Susie and her Sister" and "Susie and Ramona" arcs. In the former, Susie's parents had promised to retire from their adventuring lifestyles after Susie's sister, Mildred, was born. However, when the girls got older, their parents decided to take One Last Job in order to find something to help Mildred control her natural magic abilities, promising to be back by Susie's fifteenth birthday to witness her Gibbous Rite ceremony. Instead, on her big day, Susie got a letter from the explorer accompanying her parents, explaining that they'd disappeared while exploring the North Pole; resulting in her estranging from her sister whom she blamed for their parents' disappearance. In the latter, when Ramona was exiled to frozen time, she lied to her about coming back in order to save magic from disappearing forever by having her bring magical creatures to the island. In response, a furious Susie trashes her room.
- Big Ol' Eyebrows: Has thick, bushy eyebrows that emphasize her temperament.
- British Stuffiness: The one character with a thick English accent and the most asshole-ish.
- British Teeth: She has a huge gap between her two teeth on her upper and lower jaw.
- Catchphrase Insult: Susie has a panoply of insults she likes to apply to various campers, including "babies", "ninnies", "nincompoops", "bozos", "ding-dongs", and "dummies".
- Cats Are Mean: She's an anthropomorphic cat. Oh, and a complete meanie.
- Daddy's Girl: While Susie loves both her parents equally and is devastated about their abandonment, she seems to be closer to her father as she has more flashbacks with him and creates two ghosts resembling her memories of him.
- The Dreaded: Besides Alice and Betsy somehow liking her, nobody else likes Susie because she is impossible to deal with, even she's when being treated nicely.
- Fantastic Racism:
- In the episode "It's My Party", Pepper Corn said that Susie stole his milk and cookies and ate them with the "justification" that they were "too delicious" for a baby panda. She also hits a piñata with a gleeful "take that, you dumb elephant" in the same episode.
- She also hates werewolves (until she found out, that Betsy is one. Betsy was afraid, that she'd stop being friends with her, but was proven wrong right on the spot, when Susie reaffirmed her friendship with her and even said she liked her "wild side").
- Freudian Excuse:
- In "Mop Forever", the reason why Susie is always grumpy most of the time is because she makes sure the camp is run right with her magic, from cleaning up everything, protecting the campers, and making sure the campers are happy. With all the work she does, she barely has time for herself, and she doesn't get appreciated for all her hard work.
- In "Susie Appreciation Day", one of the reasons for her disliking Oscar and Hedgehog is because their friendship reminds her of her friendship with Ramona and seeing them together makes her uncomfortable. It's revealed in the "Susie and Ramona" arc that Ramona got Susie to find more magical creatures in New York by claiming that she (Ramona) will be able to leave Frozen Time. Susie immediately does so, under the impression that she'll finally see her best friend again; however, right before the campers arrive on the island, Susie received a letter from Ramona, who explained that she lied in order to save magic which she did not take well because of what happened with her family and denounces their friendship in a fit of rage.
- In her backstory arc, she was accidentally abandoned by her parents on the most important day of her life when they went missing and an ensuing argument with Mildred resulted in Susie (and Mildred) drinking an immortality potion, getting sent to America for her own safety, and getting separated from her sister.
- Gasshole:
- When she thought she was alone in her cabin, she first pretended to have spotted intruders (not knowing, that there really were intruders in her cabin, namely Oscar and Hedgehog hiding in the roof beams), then let out a big fart and joked that the fart was the so-called intruder.
- She is, to Hedgehog, Oscar, and Pajamas' sorrow, a "sleep farter" (she let out a giant fart when Jimjams was telling the story how the Summer Island coven with Susie and Ramona at the helm was saving the world's magic).
- When she was in a hotel to find and save magical creatures, a waiter thought she and her witch colleagues were a "Wilderness Girls" troupe (apparently their world's Girl Scouts) and asked her if she was trying to get an etiquette badge. She showed him how she doesn't give a shit about etiquette by letting out a big, nasty fart.
- After she cautioned her witch colleagues not to wake her (by isle-wide broadcast via giant magical hologram with sound), her threatening "or else" was followed by a big fart while on air.
- Heel–Face Turn: In the finale, after finally letting go of the past and reconciling with her estranged sister.
- Hopeless with Tech: Because she relies heavily on her magic, she doesn't know how to use certain modern technology. In "Director's Cut", when she tries to eject a tape from a camcorder, she tries to cast a spell to open it, it doesn't work, and she failed to notice the labeled eject button on the side of the camera. And when her fire alarm is activated, she tries to put a sleep spell on it which doesn't work.
- Hulking Out: When she found out, that her best friend Ramona manipulated her into setting up the summer camp to save magical creatures with the false promise of being reunited with her right away, she became very angry and muscular for a few seconds, ripped off the top bunk she prepared for Ramona with her magic and threw it against the mirror she uses to communicate with Ramona.
- Jackass Genie: In "Oscar and Hedgehg's Melody", when Susie is made to declare Oscar and Hedgehog the rightful winners of the talent show and grant their bet winnings of bacon, eggs and omelettes, she causes a rainstorm of the aforementioned foodstuffs.
- Kick the Dog: She will go out of her way to make everyone miserable, even if the campers haven't done anything to her.
- Laser-Guided Karma: No matter how horrible she acts, Susie never gets away with being a bitch, always getting put in her place and/or humiliated.
- Locked Out of the Loop: Susie is completely unaware that Betsy has been teaching Hedgehog magic in secret and Hedgehog's friends are the only people who are aware of this. She eventually finds out in "The Library" and is not happy to discover this, but she's still unaware it was Betsy who has been teaching her. She’s also completely unaware that Betsy is a werewolf as revealed in the episode “Hedgehog Werewolf”, but finds out in "Just You And Me" and accepts Betsy for it.
- Ms. Exposition: Susie serves as this whenever Oscar and Hedgehog mess something up and she has to explain to them why it's a problem.
- Older Than They Look: Susie is apparently The Ageless, having been fifteen since at least 1892. Oddly, the other witch she's in a picture with from that time, Ramona, is an old woman when Oscar and Hedgehog meet her. In "Just You and Me", Susie reveals that she is 400 years old.
- Pet the Dog: Despite her personality, she has moments of genuine kindness:
- After Susie's party ends in disaster, no thanks to her own behavior, Alice tells Susie that she still likes her and Oscar and Hedgehog probably like her as well since they stayed behind to clean up her party. Susie returns the favor to Oscar and Hedgehog by using her magic to clean up the party for them.
- A small one: in "Mr. Softball", when Susie and the other witches are forced to clean the Killer Whale's teeth without magic, and Oscar decides to help her, she genuinely thanks him.
- Susie's friendship with Alice and Betsy is this. With her being closest to Alice and despite her dislike of Betsy stopping her from going too far, she still cares for Betsy.
- When JimJams returns to her after being brought back to life and apologizes for an argument they had, Susie accepts his apology and invites him to watch TV with her.
- The Pig-Pen: Susie's personal hygiene is rather lacking.
- Rose-Haired Sweetie: Inverted. Susie has bright pink hair, but is a moody jerk.
- Sitcom Arch-Nemesis: Susie particularly doesn't like Oscar and Hedgehog, but she mostly has it in for Oscar.
- Sleepwalking: She's terribly embarrassed by her sleepwalking and had to be saved by Oscar and Jimjams when she sleepwalked with many giant bears outside.
- Sour Outside, Sad Inside: She's a massive bitch to everybody, but her backstory arcs explain that she acts this way to Never Be Hurt Again.
- Walk on Water: Susie once enchanted her bike to drive on water.
Alice Fefferman
Voiced by: Charlyne Yi
Woolly mammoth and the second nicest of the witches, with an addiction to all things cute.- Angry Dance: When she's frustrated no one came to Susie's party, she gets Oscar and Hedgehog to make it right by breaking out her most threatening dance moves.
- Ambiguously Brown: She has brown fur.
- Beware the Silly Ones: She's a flightly Girly Girl - who's obsessed with turning monsters into babies against their will. Additionally, she's the most powerful of the witches, according to Betsy, who cannot undo her spell on the monsters.
- Cuteness Proximity: Alice is tagged out of the softball game because she stops to pet a cute kitty. She thinks it's worth it.
- Fainting Seer: She can receive visions of the future, but when she does, her pupils seem to disappear, indicating that she loses consciousness or at least enters a state of trance when she receives a prophecy.
- Informed Species: While it looks like she's the same species as Oscar, who's an elephant, she's technically a woolly mammoth as revealed in "Mushrumours".
- Lack of Empathy: This is one reason why she's the second nicest witch. In "Monster Babies", she shows no concerns when she turns the monsters into babies against their will and giving them away to the campers. After the camper return back the monster babies, her initial response was to destroy them until Oscar talks her into turning them back to normal. Alice thinks that's so much easier and not because it's the right thing to do. After turning the monsters back into adults, she doesn't even care that she made the monster trust the witches even less.
- Malicious Slander: After she claimed that mushrooms cause one's hair to turn into spaghetti (something she pulled out of her tukhes to bullshit her way out of eating Oscar's mushroom dishes he brought for picnic), she received a vision of a "Death Cap" (a being that takes revenge on anyone telling lies about mushrooms (but at the very least in her case, she didn't try to kill or otherwise harm Alice, but fed her a "button mushroom" instead to convince her of how mushrooms can taste good)) coming after her.
- Well-Intentioned Extremist: She genuinely believes the world will be a better place if all monsters are turned into adorable babies.
- Would Hurt a Child: When no one would take the monster babies, her initial response was to destroy them until Oscar talks her out of it.
Betsy Spellman
Voiced by: Nikki Castillo
A horse and the nicest of the witches, and the only one the campers can more or less tolerate.- Bookworm: She is often seen reading books that usually relates to their current situation.
- Cool Big Sis: She's this among the campers, especially towards Hedgehog when Hedgehog revealed that she has been teaching her magic in secret and gave her comfort and advice when they were werewolves and after Max rejects her love confession in "Spell Crusher".
- Nice Gal: She's the nicest camp counselor and is willing to help the campers. She's also proud of the fact that she's the nicest of the three counselors.
- Not So Above It All: Despite being the nicest witch, she will still join in with their mischief against the campers. Though Susie forces her to do so with blackmail or threats of violence.
- Our Werewolves Are Different: She's revealed to be this near the end of "Hedgehog Werewolf", and Susie is completely unaware of this until the episode “Just You and me”.
- The Friend Nobody Likes: At least amongst the counselors. Since Betsy is the nicest, she is the one who stops Susie and Alice from overdoing it, much to Susie's displeasure. Downplayed, as Alice does not seem to care when she stops her from overseeing it and despite Susie's dislike of Betsy's stopping her from going too far, she still cares for Betsy.
Susie: You know, sometimes I really hate you, Betsy...
- Token Good Teammate: She is the only camp counselor that is consistently nice.
The Coven
Ramona
Susie's Best Friend trapped in Frozen Time.
- Big Good: She's the head witch of the coven and leads everyone to try to save magic.
- Mayfly–December Friendship: With Susie, who is immortal, which prevents her from going into Frozen Time. The finale turns it into a May December Friendship when Time relieves Susie's immortality and they reunite.
- Morality Chain: To Susie, who probably would've descended to Big Bad status if it wasn't for their friendship and she's usually the one who stops Susie from going too far.
Mallory
Emma
Monsters
In General
The resident monsters of the island who, despite appearances, are all swell guys and gals.
- Benevolent Monsters: Their whole shtick. They don't like scaring children and have a gentle temperament and offer services or help for the campers when needed.
- Leitmotif: Establishing shots of the monsters are often accompanied by a strident, stately brass section.
- Our Monsters Are Weird: Each monster has a unique design with different colors, physical features, and sizes.
- Stop Being Stereotypical: Inverted when their Godmonster wants them to be traditional, scary monsters but they don't want to be like that. Then it's revealed their Godmonster doesn't like being a scary monster either and only pretends to act like that because she wants to set a good example for them.
- Why Did It Have to Be Snakes?: They're all afraid of the witches, especially Susie, because they're teenagers with magical powers and they pick on them because they're gentle.
Howard
- Voiced by: Mike Birbiglia
A tall, purple monster who wears glasses and has a single pink horn.
- Horned Humanoid: He has a single pink horn on top of his head.
- Smart People Wear Glasses: Howard wears glasses and he's one of the smart monsters, possibly their lancer too.
Ava
- Voiced by: Fortune Feimster
A tall, white monster with black spots and black ears and a snout. She can take and print Polaroids with her eyes and mouth respectively.
Mortimer
- Voiced by: Bobby Moynihan
A tall, light blue monster with rabbit-like ears.
- The Leader: He's revealed as this to the monsters, having brought them together at Harvard with Oscar's help.
Melvin
Blanche
- Voiced by: Alia Shawkat
A tall, brown monster who has a door in front of her body.
- Horned Humanoid: She has two white horns.
Margot
- Voiced by: Kimiko Glenn
A medium-sized, purple monster with wings.
- Scary Librarian: She's revealed to be a librarian at the library of the camp, and she will get scary mad if anyone makes too much noise.
- Winged Humanoid: She has tiny wings on her body.
Stuart
- Voiced by: Stephen Root
- Obstructive Bureaucrat: He works as this at the Bank of Heartforde and is just as obnoxious. He also served as a secret society proctor during his time at Harvard University.
- Sitcom Arch-Nemesis: He's this to Hedgehog due to fighting with her over a dictionary.
- Token Evil Teammate: So far, he's the only monster who is known to be a complete jerkass.
Elves
In General
Elves that live on the island outside the summer camp.
- E.T. Gave Us Wi-Fi: Not technology, but actions nobody really thinks about. Barb states if no one is not sure who came up with something, an elf probably did it. Barb was responsible for creating "putting pants on one leg at a time", while other elves created "buttering both sides of toast in case you drop it", afternoon naps, and the "shout and toot".
- Gag Nose: They have huge, round pink noses.
- Our Elves Are Different: They're the small type and they lack pointy ears.
- Really 700 Years Old: Some of the elves are in their 300s. The age of a teen elf is around 319.
- Your Size May Vary: Their size can vary in some episodes, although it's unknown if there are different elves with different sizes. Some elves can come up to Oscar and Hedgehog's waist, while other elves are small enough to hold in one hand.
Barb Goldberg
Voiced by: Whoopi Goldberg
The head of the elves who runs the Soundhouse on the island.
- Berserk Button: Oscar learns to not mention her age after she slaps his face twice claiming there was a mosquito on his face.
- E.T. Gave Us Wi-Fi: She created "putting pants on one leg at a time" and the "crush-fession".
- Like a Son to Me: In the episode "When Harry Met Barry" Barb says to Oscar and Hedgehog that she likes to think of them as her 'camp kids'.
- Rube Goldberg Device: Most of her inventions are these, especially the Soundhouse, but she calls them a "Barb Goldberg Machine".
Others
Pajamas
Voiced by: Anna Strupinsky (pilot), Naomi Hansen (series)
Oscar's pajamas that come to life when she's on Summer Camp Island.
- Ambiguous Gender: In "Pajama Pajimjams", Pajamas is referred to with he/him pronouns, but in Season 2, Pajamas is later referred with she/her pronouns in "The Haunted Campfire" and "Pajamas Party".
- Cheerful Child: She behaves and sounds like a friendly, energetic child.
- Keet: She is very energetic.
- Living Clothes: She's Oscar's favorite set of pajamas. She came alive at the camp.
The Sun and Moon
The Sun voiced by: Melanie Lynskey
The Moon voiced by: Cedric The Entertainer
The Moon voiced by: Cedric The Entertainer
A living sun and moon that can only talk when they're at Summer Camp Island.
- Demoted to Extra: The Sun and Moon had some speaking roles in Season 1, but they haven't said a single word in Season 2.
- I Just Want to Have Friends: The Moon just wants to have friends since most people are asleep when he comes.
- Light Is Not Good: The Sun throws a hissy fit over not having her hairstyle appreciated, making everyone suffer in heat. She also doesn't value friendship as much as the Moon does.
- Lunacy / The Power of the Sun: Naturally. Their supernatural powers are made very clear.
- Making a Splash: The Moon has control over the tides and water. When he leaves, so does the sea.
- Nice Guy: The Moon is pretty nice to everyone, especially towards Oscar and Hedgehog.
- Solar and Lunar: They are literally this.
- Unexplained Accent: The Sun has a New Zealand accent, thanks to her voice actress, and it's never explained why she has this accent in the show.
Aliens
Voiced by: Sam Lavagnino (The King), Ethan Maher (Puddles)
Diminutive, furry aliens that serve as assistants to the witches and the campers. The King and Puddles are two notable members of this species.
- Emotion Eater: Emotions are limited on the Alien planet, and so all of them have to share the resultant energy; however, if even one Alien does not express their emotions, that Alien will end up hoarding all emotions on the planet until they can express them in some way. Puddle ends up doing just this in "Feeling Spacey" when they struggle with confessing their love for the King.
- Flying Saucer: Their primary mode of transportation.
- No Biological Sex: The Aliens seem to be masculine, since they have a king, but no gender-specific pronouns are used to describe them.
- Really 700 Years Old: The King is said to be over a millennium old in "Feeling Spacey".
- Servant Race: For whatever reason, they serve the witches and help the campers with menial tasks. They also built the cabins on the island.
- Troll: When everyone thought, that Hedgehog and Max would be awkward around each other because Max wanted be he her friend rather than her romantic partner, the Alien King wanted to ask them both just to make them awkward for shits and giggles.
Yetis
Yetis that appear on the island.
- Bigfoot, Sasquatch, and Yeti: Of the snow variety.
- Chameleon Camouflage: They have the ability to do this.
- Horned Humanoid: Yetis will get their horns when they become an adult.
- Intelligible Unintelligible: While the audience cannot understand them, everyone in-universe can.
- Speaking Simlish: When adult yetis talk, they speak like this; their speech resembles various brass instruments.
- Theme Naming: Yetis are named after musical instruments.
Monster Under the Bed
Voiced by: Alfred Molina, Judd Hirsch (pilot)
A strange translucent monster that lives under the bed in Hedgehog's cabin.
- Deadpan Snarker: His usual response to the other characters.
- Fanboy: He's revealed to be this to Hedgehog in "Campers Above the Bed".
Dr. P. Shark
Voiced by: Judd Hirsch (pilot), Richard Kind (series)
A shark who lives in the pool by Oscar's cabin.
- The Shrink: He's a licensed therapist, but on his business card he's a "licensed ther-pyst".
- Talking Animal: He's a more-or-less normal shark, except he can talk.
- Threatening Shark: Subverted, as his vocation can attest.
Mildred McCallister
An infamous witch Susie often brings up as a cautionary tale. And also, her younger sister.
- 11th-Hour Ranger: When Susie becomes trapped in the Metaphysical Reserve and all the witches out of commission, the campers resort calling her to the island to save Susie.
- Blessed with Suck: Quite literally from birth, Mildred was a magical savant but she has trouble controlling her magic and usually conjures up frogs unintentionally.
- Big Ol' Unibrow: Sports a quite impressive one.
The Rascals
Magic eating creatures that are implied to be born in the sea. They consist of a zebra, a sheep, and a wolf.
- Berserk Button: When the wolf arrives to collect Mildred's magic and cannot find the jars it has been stored in, his calm demeanor evaporates and he becomes furious with her, vowing to return and get it.
- Jackass Genie: Of a sort. Their aim is to devour magic by first convincing the user that to be rid of it is what they desire most or offering what they desire most in exchange for the magic. Alternatively, they can take what you adore most if magic is not given to them.
- Magic Eater: In this world, magic takes the form of delicious jelly and it's a Rascal's favorite and most sought-after food. Barb's fake pools don't satiate their hunger.
- Meaningless Villain Victory: Ultimately, they do indeed succeed at eating all of Mildred's magic, it just turns out that eating the magic of a witch with severe Power Incontinence wasn't the best idea as it incapacitates them.
- More than Mind Control: Having been tricked into sleeping forever by Barb, they use their time in the dreamscape to become very good at Astral Projection and plant the idea to enter the Metaphysical Reserve in Susie's head so they can escape.
- Painful Rhyme: When beseeching an elf for their jelly, The Rascals insist that has to rhyme but they fail every time.
- Perfectly Cromulent Word: They are not above making up words outright to force their rhymes.
- What Happened to the Mouse?: The last time they are seen they have severe nausea and are pushed into the sea by Barb.
