A shadow of an evil old rich man who passed away, thus letting him roam free. After becoming free he haunts the basement of Courage's Home, but secretly has a passion of becoming a Star.
- Dark Is Not Evil: He likes scaring people, but doesn't actually do anything malevolent.
- Impossible Shadow Puppets: He makes these to scare Courage.
- Literal Metaphor: He at first mentions he means Star as in a celebrity. But when Courage suggests becoming the shadow of a real star, he accepts.
- Living Shadow: He gained a life of his own, after the human he was attached to died.
- Mind Screw: Some of the forms he takes are him attempting this on Courage.
- Peek-a-Bogeyman: The first thing he did once he became free was scaring people until he decided that pranking is not what he really wanted to be.
- Villainous Breakdown: Flies into a comical meltdown after Courage keeps flashing lights at him.
- Voluntary Shapeshifting: Shadows are after all immaterial, so it makes sense that he can take on different forms.
A big, hairy, misunderstood monster who needed Courage's help to evade an angry mob.
- The Big Guy: To Courage, once they finally become friends.
- Bigfoot, Sasquatch and Yeti: He's Bigfoot.
- Dark Is Not Evil: Not a bad guy at all, just a misunderstood monster.
- Ear Ache: At the end of the episode he appears in, after Eustace is chased away by the angry mob, Bigfoot's dragged away by his mom this way while she's lecturing him about wandering away from home.
- Gentle Giant: He seems to have the mentality of a young child and clearly doesn't mean any harm.
- Raised by Humans: He was apparently raised by, or at least now lives with, an old human woman who considers him to be her son.
Two brother ducks who come to Nowhere. They are on a mission to find their third brother. One of the two tends to lay eggs, the other gets annoyed by this.
- Alien Abduction: They kidnap Muriel and Eustace to attach mind control helmets on them.
- Amazing Technicolor Wildlife: They are blue-feathered alien ducks.
- Anti Villains: Type IV, they never meant any harm in putting Muriel under mind control, they just wanted to free their brother so badly.
- Catchphrase: (laid egg) "I told you to stop doing that."
- Evil Brit: Subverted. They're not evil, they just want to get their brother back. Being extraterrestrials, they're not really British either.
- Feathered Fiend: Although they're at first antagonistic towards Courage, this is subverted by their sympathetic motives, and they had no intentions of any actual malice.
- Jerk with a Heart of Gold: They may argue, but deep down they really care about each other.
- Mind Control: They use helmets to control Muriel, Eustace, and Courage (although willingly for Courage's case).
- Mister Seahorse: All of them tend to lay eggs despite being male. They also repeatedly lampshade their own confusion about it.
- No Celebrities Were Harmed: Their voices are imitations of Ringo Starr from The Beatles. In fact, the impression was so spot-on that a lot of people actually thought it was Ringo Starr voicing the Duck Brothers.
- Sibling Team: It is shown that they work together as much with the third one as with each other. Not that the team is without it problems.
- Solid Gold Poop: The eggs one of them keeps laying at least seem to be pure gold.
- Unexplained Accent: They may not be from Liverpool, but their accents certainly are.
A grotesque hunchbacked man with a heart of gold who visited the Bagges one night.
- Amazing Technicolor Population: He's a dark green color, which clashes with his red hair.
- Bald of Awesome: In sharp contast to Eustace. While Eustace takes the mere fact that he's bald as an insult and flies into a rage, in the same scene the Hunchback takes far worse insults with polite grace and serenity.
- Beware the Nice Ones: He gives Eustace a devastating "The Reason You Suck" Speech about his bullying behavior having endured it for most of the episode, but finally loses it after seeing Courage be bullied one time, too many.
- Expy: Is a walking Shout-Out to The Hunchback of Notre Dame, right down to being a bellringer as a hobby.
- Face of a Thug: He's ugly, but far from being a bad person.
- The Grotesque: Is exaggeratedly ugly, to outright Gonk levels - however, his sheer goodness and good-natured enthusiasm propel him into still being a kind of Ugly Cute despite this through personality alone.
- Nice Guy: In fact, one of the nicer characters Courage has met in the entire series. He also holds the distinction of being the only character besides Muriel to stand up to Eustace on Courage's behalf.
- Renaissance Man: He's a musician, an acrobat, and a shadow puppeteer.
- Walking the Earth: His way of living. He leaves the Bagge farm with good feelings seeing that there are still kind people out there.
A chef and owner of a hamburger restaurant. It seems that the meat he cooks with is made out of humans who have previously visited the place.
- Barefoot Cartoon Animal: He doesn't wear shoes.
- Bilingual Bonus: "Jeanbon" is a pun on "jambon," which means "ham" in French.
- Demoted to Extra: After his first initial appearance, he's limited to minor background roles.
- Happily Married: He is shown to have a wife that he loves dearly, but we haven't seen her since his debut episode.
- Meaningful Name: It's kind of appropriate that a pig chef's name would be a play on the French word for "ham".
- Nice Guy: A friendly host to his customers, even if he can be pretty creepy.
- Not Evil, Just Misunderstood: Courage's over-active imagination makes him think he's a man-eater. But he's not, just a kindly and somewhat creepy cook with a passion for making meat sculptures.
- Pig Man: He's an talking, bipedal, human-sized pig.
- To Serve Man: This gets subverted. He's not actually a man-eating pig.
A magical tree that granted whatever the person near it wished for from its branches that grew near the Bagges once... until Eustace cut it down out of spite.
- Benevolent Genie: He can give Courage and Muriel anything they want.
- Face Death with Dignity: He knows Eustace will chop him down, but he doesn't look visibly worried about it.
- Heroic Sacrifice: He knows he'll eventually be chopped down. But offers his leaves in making a remedy that'll cure Muriel.
- Laser-Guided Karma: The Tree seems to inflict this on Eustace, by inflating his head like what happened to Muriel.
- Literal Genie: Eustace said he wished Muriel had a bigger head while going through his rant about the Tree. Guess what Muriel got.
- Make a Wish: He has the power to grant wishes. And usually does a good job of it.
- Synchro-Vox: His mouth is live-action, while the rest of him is animated.
- Wise Tree: Besides granting wishes, he gives advice to Courage.
Nothing is much known about the character itself, but it's one off appearance in "Big Stinkin' City" is one of those sights a Courage fan never forgets. From the back it looks like a normal girl playing Violin (Though even this is considered Uncanny Valley considering everything else around is animated). But when it turns around it has a scary looking claymation face that brings the Uncanny Valley Up to Eleven as there's realistic looks, animated background, and claymation all in one spot. Though it seems that the girl's face is not always like that, as she appears normal on a television that Eustace is watching later in the episode.
- Creepy Child: Up to Eleven due to being a girl who turns around to reveal a horrifying face. She might as well do this to scare away visitors.
- Demon Head: Really catches you off guard the first time you see it... (Especially if most likely as a kid you haven't seen headturn scares before). Though interestingly subverted when she appears in the same episode again on Eustace's TV with a normal girl's face.
- Eye Pop: Her eyes bug out and wiggle.
- Face-Revealing Turn: This was many a kid's first introduction to these kinds of jumpscares.
- Fish Eyes: They bulge!
- Humanoid Abomination: Though not always like this, because later on she is shown with a normal face on Eustace's TV.
- Jump Scare: She turns around to reveal a horrific face without warning, making her one of the most notable instances where the show scared the audience with the sudden appearance of a scary sight.
- Nightmare Face: Makes a frightening face when scaring away Courage.
- The Spook: To add to her disturbing nature, there are no explanations for who she is and what she's doing there.
- Early-Bird Cameo: A banana person is among the creatures shown in the opening of the show's first season, but none of them would appear until the second season.
- Irony: They have a ruler called the Banana-Llama who turns out to be a monkey playing them so he can eat them.
- Plant People: Like the eggplants, they are anthropomorphic fruits after all.
- Ridiculous Future Inflation: As Eustace finds out:Eusace: "$8,000,000 for a salami?!"
A strange banana man who is basically a drug dealer, except he sells banana suits instead of drugs.
An insane, tiny, old lady with an obsession with lint. Doc Gerbil performed an experiment on her which gave her plungers for arms and legs, though she can still grab things with the suction cups.
- Amazing Technicolor Population: Her skin is blue.
- Ax-Crazy: It's clear that her isolation has taken its toll on her sanity.
- Catchphrase: "IT'S MINE! ALL MINE!"
- Cloud Cuckoo Lander: Obsessed with owning all the lint in Doc Gerbil's vacuum cleaner.
- Fiery Redhead: She has red hair and is very aggressive.
- Lantern Jaw of Justice: Like many characters in the show, she has one.
- Large Ham: "IT'S MY LINT! YOU DON'T TOUCH MY LINT! IT'S MINE! ALL MINE!"
- Laughing Mad: She laughs hysterically and is implied to have gone mad from being confined for so long by Doc Gerbil.
- Noodle People: Her torso and limbs are thin and wiry.
A singing sea serpent.
- Cyclops: She has a single large eye.
- Dark Is Not Evil: All she really wanted was for someone to listen to her sing. Her 'attack' on the boat could also be seen as merely playing, as she doesn't seem to intentionally cause damage. And once Muriel and Courage have listened to her sing, she tows them back up the river.
- Early-Bird Cameo: She is among the monsters and villains seen in the first season's opening, but doesn't actually appear within the series until the second season.
- Meaningful Name: She sings the signature song from the opera Carmen.
- Sea Monster: She's a massive red sea serpent with one eye.
- Vocal Dissonance: A big and scary sea monster who also happens to have a beautiful singing voice.
Small creatures who live in colonies of coral that Courage and Bagges encounter when they go snorkeling. Their coral is apparently a popular material for wigs which Mama Bagge wishes to acquire, even if it means destroying their homes. Though Courage will have none of that.
- Accessory-Wearing Cartoon Animal: The Mayor wears a hat and a necktie while the small, female coralite has a bow.
- Big Eater: The girl coralite can eat a whole pie (which, to her, is gigantic) in about two seconds.
- Lilliputians: A race of very tiny people.
- Nice Hat: The Mayor Coralite has a spiffy top hat.
- Ridiculously Cute Critters: They're Smurf Expys, so naturally they'd be adorable little people, but the little Coralite Girl really take the cake.
- Trademark Favorite Food: They really like eating pie.
Auguste Rodin's sculpture The Thinker is also brought to life by the circumstances above. Becomes the unwitting target of Mona's affection.
- The Ditherer: Constantly can't make up his mind, voicing aloud arguments in his head. This eventually exasperates Mona Lisa to the point she leaves him. He is last seen still figuring out what to eat in the Nighthawks painting.
- Nonstandard Character Design: Due to being modeled after the actual statue, his design is more realistic than the other characters on the show.
- Oblivious to Love: Because he's too busy thinking, he doesn't notice Mona Lisa's affection.
A scarecrow that came to life and became a nuisance to the Bagges in his quest to become tougher.
- Nice Hat: A wide-brimmed farmer's hat, fitting for a scarecrow.
- Nightmare Retardant: In-Universe, he's not scary at all, which bothers him because scaring people is his job.
- No Celebrities Were Harmed: His speech patterns are based on horror film legend Boris Karloff.
- Scary Scarecrow: He is a living scarecrow, but he just can't scare anyone (much to his consternation.)
- Well-Intentioned Extremist: He's very kind, but his efforts to protect Murial went a little overboard. To be fair, after getting a taste of the kinds of horrors the Bagges meet on a regular basis, he isn't completely wrong. However, removing Eustace and Courage from her life and locking her in a saferoom in the basement was definitely an overreaction.
Some baby vulture-like birds who required sustenance from Muriel and Courage, courtesy of their mother.
- Accessory-Wearing Cartoon Animal: They all wear bonnets.
- Fish Eyes: Their eyes face different directions.
- Picky Eater: They only eat pre-chewed worms. Probably justified because they're babies and aren't old enough to eat solid food yet.
- Ridiculously Cute Critter: In the show's rather strange style, they are pretty adorable. Muriel in particular is quite taken by them.
- Trademark Favorite Food: Worms. Pre-chewed worms, since their beaks aren't big enough for cutting yet (which, funnily enough, is true of many real life raptorial birds.). Courage, of course, has to do the pre-chewing.
The aforementioned baby birds' mother. She picked up Muriel to act as a babysitter for her while she flies off to find a husband.
- Dark Is Not Evil: For a massive, vulture-like bird monster, she's remarkably polite if not eccentric. It's made clear that she posed no malice against Courage or Muriel, and the one time she threatened either of them it was for a perfectly justifiable reason.
- Feathered Fiend: While not really that evil or cruel, she's still very intimidating, and makes it clear that she would not hesitate to eat Muriel if anything bad happens to her kids.
- Giant Flyer: Her wingspan is very large and impressive.
- Kidnapping Bird of Prey: Grabs Muriel for the purpose of being her babysitter.
- Mama Bear: She won't take kindly to anyone who causes harm for her children, as this quote illustrates:Mama Bird: If I come back here and find just one feather out of place on their little heads, I'M GONNA EAT YOU WITH THIS CEREAL SPOON!
- No Celebrities Were Harmed: Her voice and mannerisms bear a strong resemblance to those of Fran Drescher.
- Scavengers Are Scum: Subverted; visually she's modeled after a vulture, but is a legitimately pleasant individual...just don't mess with her kids.
- Toothy Bird: Probably justified though, since she's obviously not supposed to represent any real bird species.
- Villainy-Free Villain: She's technically the antagonist of the episode, but she's also one of the few antagonists in the series who is neither evil nor particularly mean—the only major threat she poses is the threat of Mama Bear-fueled retribution should anything bad happen to her kids, something that any parent would probably see as justified.
A lonely doctor whose sentient house keeps him from having neighbors.
- Cool Shades: He wears a pair of red rockstar shades.
- Einstein Hair: His hair is a cross between mad scientist hair and an 80s-style perm.
- Genius Loci: His house is sentient and happens to be extremely overprotective of Gerhart.
- I Just Want to Have Friends: He desires friendship, but finds himself all alone. Courage and Muriel help him.
- Mad Scientist: He used music to bring his house to life.
- Nice Guy: He's not really a bad guy at all. All he wants are friends.
- No Celebrities Were Harmed: He's modeled after Roy Orbison
- Noodle People: One of many characters on the show with a torso and limbs that are long and thin.
- The Von Trope Family: His last name starts with "Von".
A deer who decides to turn the tables on the hunter Eustace, and hunts him instead.
- Accessory-Wearing Cartoon Animal: He wears glasses.
- Bald of Awesome: The top of his head lacks fur.
- BFG: He owns a large laser rifle, the same kind that the deer hunters use. Exactly how he got one is anyone's guess.
- Catchphrase: "A deer's gotta do what a deer's gotta do!"
- Green Aesop: His episode has an obvious moral against hunting.
- Hero Antagonist: He doesn't really have anything against outsiders, he's just sick of the hunters, and was more than willing to solve the problems in a game of wits.
- The Hunter Becomes the Hunted: He knows how to play the hunters' own game against them.
- Papa Wolf: He's trying to protect his family.
A man who cuts peoples' portraits in paper, desiring his creations to one day take lives of their own.
- Cool Old Guy: A truly gifted artist, and a nice guy once you get to know him.
- Dark Is Not Evil: He's shady, but he's not a bad guy. He just wants his art to have life.
- Einstein Hair: What's left of his hair is white and wavy.
- Evil Laugh: Subverted. He isn't a villain, but he laughs like one.
- Large Ham: He acts like a very stereotypical Mad Scientist in a lot of ways.
- Paper Master: What with being an artist who sees his work as his children.
Two best friends (and likely more than that) who need help reuniting. Kitty initially appears to be the Villain of the Week when she mercilessly beats up Courage, but it's soon revealed to be because Bunny is horribly abused by an evil dog.
- Ambiguously Gay: There seems to be an implied lesbian undertone to their friendship.
- Broken Bird: Both of them are women trying to cope with the abuse and misfortunes they've suffered in the past. Bunny is a straightforward example, with Kitty being the Defrosting Ice Queen variant.
- Heterosexual Life-Partners: Well, that's assuming if they really are heterosexual. If one thing's for certain, they're completely loyal companions to each other.
- Humanlike Foot Anatomy: They do look like paws, but they work exactly like human appendages.
- Noodle People: Noodle Animals, actually. But they otherwise fit the bill of having long and thin torsos and limbs to a T.
- Romantic Two-Girl Friendship: Though this was clearly more than friendship by the end... Unless it just needed more context.
- Ambiguously Human: Due to first appearing with a mask and robe, it wasn't clear what she was at first. Courage naturally assumed she was an evil monster out to eat his family, until it turns out she's an anthropomorphic cat (not unlike Katz).
- Berserk Button: Dogs, at least at first, prove to be her main anger trigger.
- Cartoony Tail: Kitty's tail looks like a fox tail.
- Cat Girl: A tall cat-person, who looks like a female Katz.
- Cats Are Mean: Kitty was mean to Courage in the beginning, because of her passionate hatred towards dogs. However we then find out what happened to her best friend.
- Cool Mask: She wears an eerie white mask that stares straight into your soul.
- Fantastic Racism: Kitty has a violent hatred of dogs. She at first lashes out at Courage, though she later thanks him for rescuing Bunny.
- Malevolent Masked Woman: For the first half of the episode she's wearing a creepy white mask and robe, and is introduced by assaulting Courage for no apparent reason.
- Mega Neko: Like Katz, she is a large feline.
- Pass Fail: Kitty's mask and dress are a fairly obvious metaphor for unsuccessfully dressing oneself as another demographic.
- Poor Communication Kills: Almost the case between Courage and Kitty. Courage probably would've been happy to help her if she didn't assume that he was a bad person and attack him unprovoked.
- Super Strength: Kitty is strong enough to use a washing machine as a weapon, as Courage found out.
- Tragic Bigot: Kitty hates dogs and repeatedly declares that "dogs are evil" because of Mad Dog's constant abuse of Bunny. Courage eventually manages to prove her wrong by saving Bunny.
- Tsundere: She is aggressive most of the time, but shows her softer side when Bunny is around.
- Woman in White: She wears a long white gown for most of the episode.
- Accessory-Wearing Cartoon Animal: Wears a necklace.
- Ambiguously Bi: Implied to have feelings for Kitty, but once had a crush on Mad Dog... before he started abusing her, of course.
- Amazing Technicolor Wildlife: She is pink.
- Butt-Monkey: To Mad Dog. Perhaps the only example of one whose suffering is completely Played for Drama on this show.
- Damsel in Distress: She does try to escape but she doesn't get far. Thankfully, Courage helps her.
The previous ruler of China who, upon being handed the now empty silkworm box, helps Courage save Muriel. She reclaims the throne upon finding that Courage has successfully completed the journey she sent him on (and consequently killed the Evil Empress).
- Animorphism: Transforms into a bird and a dragonfly.
- Asian Rudeness: Averted entirely. Unlike her sister and nephew, she is a warm, calm, faithful person who assists Courage and saves both Muriel and her kingdom.
- Evil Twin: Inverted, as she is the Good Twin of the Evil Empress.
- King Incognito: Disguised as a peasant who runs a restaurant.
- Rightful King Returns: She takes her rightful place as China's ruler after her wicked sister is defeated.
- Telepathy: When Courage falls into her restaurant, she reads a bowl of noodles and instantly understands his situation.
A female, space-dwelling squid who was tragically and heartrendingly separated from her husband, who was devoured by a space whale. She ends up crashing onto Earth as the last of her kind... and getting progressively sicker. Unfortunately, the government discovers her and wants possession of her- right when she's pregnant with babies.
- Dark Is Not Evil: She's a dark-colored space monster, but she's just a loving mother and grieving spouse.
- Giant Squid: A giant space squid, no less.
- Green Aesop: She's slowly being killed by military research and separated from her eggs. If her eggs can't hatch, there will be no more stars in the sky. It's pretty easy to fill in the blanks as to what environmental moral is being explained here.
- Last of Her Kind: She's part of a critically endangered species, especially after her mate died. But at least her offspring are born not long before her own demise.
- Mama Bear: Though weakened, she did help Courage in protecting her babies.
- Mood Whiplash: One of the most depressing episodes of the whole series - but it ends on a heartwarming note.
- Ridiculously Cute Critter: Her species is especially cute as babies.
- Space Whale: A nasty enemy of these creatures is a giant space whale.
- Starfish Alien: Well, she's more like a squid alien.
Two multi-armed aliens who use Eustace and Muriel as lab rats in order to cure a disease affecting their species that causes their extra arms to keep punching themselves.
- Alien Abduction: They use a tractor beam to capture the entire Bagge farmhouse and its inhabitants to experiment on them.
- Buffy Speak: Jay. "THE BIG SLIDEY THING!"
- Catchphrase: Jay's "RIIIIIIIIGHT...".
- Commissar Cap: Lazzo wears a cap to show he's a captain.
- Eye-Obscuring Hat: Lazzo's eyes are always hidden by his hat.
- Fat and Skinny: Jay's fat and Captain Lazzo's skinny.
- Lantern Jaw of Justice: Both have big chins, but especially Lazzo, and they're trying to find a cure for the illness wiping out their species.
- Mad Scientist: Jay. He would've preferred to be a telemarketer though.
- Perma-Stubble: Lazzo has five-o-clock shadow.
- Those Two Guys: They share that dynamic, despite being the central characters of their episode.
- Transformation Horror: They turn Muriel and Eustace into half-alien hybrids in hopes of extracting a cure from them, but they end up growing some additional parts too.
- Well-Intentioned Extremist: They abducted and experimented on the Bagges in hopes of finding a cure for a deadly pandemic that was threatening their race.
Courage's mother and father, who ended up shot into space by an evil veterinarian when their son was a puppy, which led to Courage being found and adopted by Muriel. They were never seen reuniting with their son, but they do get a chance to get even with the vet who originally sent them into space after Courage defeated him.
- Accessory-Wearing Cartoon Animal: Courage's mother wears a hat and shoes as her only clothing.
- Adult Fear: They were separated from their son when he was only a baby and never knew what happened to him.
- Good Parents: They loved their son and were horrified when the vet separated them from him.
- Last Episode, New Character: They don't appear until "Remembrance of Courage Past", the first half of the final episode.
- Strong Family Resemblance: They both look like Courage, except his dad has bushy eyebrows and a mustache and his mother has eyelashes and lipstick and wears shoes and a hat.
- Tertiary Sexual Characteristics: Courage's mother has eyelashes and wears lipstick to show that she's female.
- Unnamed Parent: Courage's father is at one point addressed as "Henry" by his wife, but the name of Courage's mother and his family's surname remain unknown.
A blue... thing that appears in the first of Courage's nightmares in "Perfect". It appears to be either a warped bugle or possibly a deformed fetus with an equally deformed human face stuck onto it.
- Body Horror: The creature appears to be a nightmarish amalgamation of Eustace's bugle and a human being. Most notably, the bugle's tube is spiraling into the top and protruding from the side of its head.
- Conspicuous CG: Like Ramses, another intentional example of a character made with computer animation in a 2D-animated series.
- The Grotesque: The creature may be freakishly deformed, but its facial expressions seem to imply that of a depressed and lonely individual.
- The Eeyore: It noticeably sinks in emotionless fashion after saying its only line; combined with its color palette, the creature could very well be a personification of Courage's self-esteem at the time.
- Humanoid Abomination: Barely on the line between this and full-on Eldritch Abomination.
- Hypocritical Humor: It whispers that Courage is "not perfect", despite it being imperfect in form itself.
- Nightmare Dreams: Appears as the first of several perfection-themed nightmares that Courage endures in the episode.
- Our Monsters Are Weird: It's a blue, hazy, floating broken bugle with a face stuck on it, with weird tendrils attached to its head with thorns for ears and a whispery voice, often described as a "fetus." Words cannot describe it.
- The Spook: Part of what makes it so disturbing is that we know absolutely nothing about what the hell this thing is or where it came from.
A bizarre, red-finned, green-eyed fish that appears in the bathtub to tell Courage that it's alright to be imperfect and accept his flaws as what makes him unique and beautiful.
- The Conscience: It is meant to be the good counterpart of the Perfectionist Teacher, telling him to accept his faults as they are what makes him perfect.
- Eat the Dog: Poor guy ends up being eaten for dinner. Played for Laughs- although he's now beer-battered, he's still alive and gets off a goofy laugh that basically takes the show to the point where things can't get any weirder, closing out the series poetically.
- Good Counterpart: While the Perfectionist Teacher is the manifestation of Courage's self-esteem, the Fish serves as his moral guidance.
- Nice Guy: He kindly helps Courage when the latter is at his lowest point.
- Unexplained Accent: He has an Argentinian accent in the Latin American Spanish dub, when no other character has one. He even swears in the name of Diego Maradona that he is imparting a good lesson to Courage.
- You Are Better Than You Think You Are: The lesson he imparts to Courage is that he shouldn't let other people's disparaging remarks get to him and that he's fine the way he is.