Characters found in Summer Camp Island.
- 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.
- 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 spends so much time together that he starts relying on Hedgehog to do most of the work and he needs her to tell him what to do. His need for Hedgehog drives him to do reckless things to ensure their friendship will never be broken. Susie notices this and tries to separate them in "Susie's Fantastical Scavenger Hunt".
- Honorable Elephant: An elephant who is a Nice Guy.
- Informed Species: He was confused by a tapir by fans until Word of God clarified otherwise.
- The Klutz: He's always bumping into things, to the point where other campers made a sign counting down how many days it's been since he has bumped into something (with the default being "0").
- Masculine Girl, Feminine Boy: He's 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 characters in the show.
- Platonic Life-Partners: He and Hedgehog are really close.
- Stop Helping Me!: Despite his good intentions to fix things between him and Hedgehog, he tends to make things worse and doesn't get that she just wants her space. This gets lampshaded in "Campers Above the Bed".
- Vocal Evolution: His voice starts sounding a little deeper in Season 2, likely due to his voice actor hitting puberty.
- 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.
- Generation Xerox: She resembles her mother, who also wears a cone hat but black.
- Informed Species: She's supposed to be a hedgehog but looks more like an alpaca or a weasel.
- Lady Looks Like a Dude: It's hard to remember she's a girl when her voice is perfectly right in the middle of a boy's and a girl's voice, until you see her skirt.
- 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.
- Nice Hat: She wears a light purple cone hat.
- 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: She becomes a werewolf in "Hedgehog Werewolf", and by the end of the episode she chooses to remain a werewolf.
- Platonic Life-Partners: She and Oscar are really close.
- Quirky Girl, Quirky Tux: Wears one to the food prom, along with some barrettes.
- The Smart Guy: She's very into science, and often utilizes it to solve problems.
- Tomboyish Voice: She has a low voice that verges on boyish.
Main CampersWhile there are other campers on the island, the show focuses mostly on these campers due to them being friends with Oscar and Hedgehog.
A laid back bat and general cool guy. He sometimes hangs out with Oscar and Hedgehog.
- 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.
- 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.
- Nice Hat: He wears a red backwards cap.
- 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".
- The Baby of the Bunch: He's the youngest male among the main campers. Word of God revealed his age is nine.
- Cool Hat: Pepper's light-blue stocking cap with ear flaps, that he uses to hide his security blanket.
- Expy: He and his security blanket, of Linus van Pelt from Peanuts.
- Panda-ing to the Audience: He's a panda who keeps a security blanket under his light blue stocking cap with ear flaps.
- Sleepyhead: He's usually seen taking a nap all over camp.
A camper who's usually seen playing musical instruments.
- Cool Hat: Wears a red beanie.
- The Generic Guy: Besides the fact he plays musical instruments, there's nothing about his personality that makes him stand out among the cast.
- Green Thumb: In "Pepper's Blanket Is Missing", he 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.
The older sister of Lem.
- 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.
The younger sister of Alexa.
- The Ageless: All of the 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.
- 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 has to do the chore anyway.
- Eye of Newt: Some of their spells require strange ingredients.
- Nice Hat: All three wear standard, pointy witch hats.
- 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.
- 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.
- Affably Evil: Invoked. Her speech to new campers sounds a bit too threatening despite how it's supposed to be inviting, which apparently the talking sun itself points out that "it gets scarier every year." In fact, out of the other counselors, she is generally mean in personality, but she isn't truly evil.
- Affectionate Nickname: She, 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: She's this among the witches and she's mean to everyone.
- The Antagonist: Seems to be hellbent on making life miserable for the campers. She only does her job for their parents' money and shoves her massive ego whenever she can. Word of God states that while she's not a villain, she does antagonizes the campers.
- Attention Whore: Big time. She replaces a film for movie night to shoehorn her talent show videos where she wins them all...without doing much effort for a real talent as an actor.
- 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".
- Big Ol' Eyebrows: Has thick, bushy eyebrows that emphasize her meanness.
- British Accents: She has this type of accent, courtesy of her voice actress who is also British.
- British Teeth: She has a huge gap between her two teeth on her upper and lower jaw.
- Catchphrase Insult: She likes to call all the campers "babies" or "dummies".
- Cats Are Mean: An anthropomorphic cat. Also a complete meanie.
- The Dreaded: Besides Alice and Betsy somehow liking her, nobody else likes her because she's impossible to deal with even when being nice to her.
- 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 that ended for unrevealed reasons and seeing them together makes her uncomfortable.
- 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.
- Jackass Genie: When she 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 makes it rain them indoors.
- 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: She's 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.
- Mean Brit: The one character with a thick English accent and the most asshole-ish.
- Ms. Exposition: She will serve as this whenever Oscar and Hedgehog messes something up and explains 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", she reveals she's 400-years-old.
- Pet the Dog: Despite her personally she has moments of genuine kindness.
- After Susie's party ends in disaster, no thanks to her, Alice tells Susie that she still likes her and Oscar and Hedgehog probably likes her too 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.
- It's a small one but in "Mr. Softball" when Susie and the other witches were force 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.
- Rose-Haired Sweetie: Inverted. She has bright pink hair but is a moody jerk.
- Sitcom Arch-Nemesis: Out of all the campers, she particularly doesn't like Oscar and Hedgehog, but she mostly doesn't like Oscar.
- You Gotta Have Blue Hair: Has pink hair.
- 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.
- 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.
- 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.
- 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".
- Morality Chain: She is usually the one who stops Susie from going too far.
- 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.
- 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.
- Token Good Teammate: She is the only camp counselor that is consistently nice.
- Benevolent Monsters: Their whole shtick. They don't like scaring children and they're really gentle. They would help the campers
- 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 Havetobe Snakes: They're all afraid the witches, especially Susie, because they're teenagers with magical powers and they pick on them because they're gentle.
- Voiced by: Mike Birbiglia
A tall, purple monster who wears glasses and has a single pink horn.
- Voiced by: Fortune Feimster
A tall, white monster with black spots and black ears and a snout.
- Voiced by: Bobby Moynihan
A tall, light blue monster with rabbit-like ears.
- Voiced by: Bobby Moynihan
A short, orange monster.
- Gag Nose: His nose is shaped like a heart.
- Voiced by: Alia Shawkat
A tall, brown monster who has a door in front of her body.
- Horned Humanoid: She has two white horns.
- Voiced by: Kimiko Glenn
A medium-sized, purple monster with wings.
- 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.
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".
Oscar's pajamas that comes 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 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.
- Meganekko: The Sun wears glasses.
- 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.
- You Gotta Have Blue Hair: When the Sun's hair is finally revealed in "Ice Cream Headache", it is pink, though whether it is her natural hair color or not is unknown.
Furry aliens that serve as assistants to the witches and the campers. Some notable aliens are the King and Puddles from "Feeling Spacey".
- Emotion Eater: Emotions are limited on their planet so all of them have to share it. But if one of them doesn't express their emotions, that alien will end up hoarding all the emotions on the planet until they can express it.
- Flying Saucer: They fly miniature versions of these.
- No Biological Sex: They seem to be masculine, since they have a king, but they're not referred to any gender pronoun.
- Really 700 Years Old: It seems all of them are this since their king is 1000 years old.
- Servant Race: For whatever reason, they serve the witches and help the campers around the camp. They're also the ones who built the cabins on the island.
Yetis that appear on the island.
- Bigfoot, Sasquatch and Yeti: They're the snow variety kind.
- 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 can't understand what they're saying, everyone in the show can understand them.
- Speaking Simlish: When adult yetis talk they speak like this and they sound like a saxophone.
A strange translucent monster that lives under the bed in Hedgehog's cabin.
A shark who lives in the pool by Oscar's cabin.