List of Courage the Cowardly Dog characters

This is a list of characters from the Cartoon Network animated series, Courage the Cowardly Dog.

Voiced by Howard Hoffman (pilot) and Marty Grabstein (series; "The Fog of Courage"; Straight Outta Nowhere: Scooby-Doo! Meets Courage the Cowardly Dog)^[1]

Courage is the titular character and protagonist of the series. He is a kind, yet easily frightened pink-furred beagle who was abandoned as a puppy after his parents were sent into outer space,^[2] but was adopted by Muriel Bagge. Her husband Eustace regularly mistreats him. Ironically, given his name, Courage is a genuine coward and he often expresses his distress with over-the-top, piercing shrieks. Regardless, he still goes to great lengths to protect his owners. In the end, he often gets injured, sometimes quite brutally, and only survives through his determination and/or pure luck. Despite his cowardice, Courage is very clever and resourceful when the situation demands it, outsmarting the villains most of the time. He also often displays super strength, carrying Muriel and Eustace with relative ease. Aiding him in saving the day is a self-aware, sarcastic, and seemingly omniscient computer that he keeps in the attic. He got his name when Muriel found him as a puppy alone in an alley and remarked that he must be quite brave to be there by himself.^[2]

Voiced by Howard Hoffman (pilot) and Thea White (series; "The Fog of Courage"; Straight Outta Nowhere: Scooby-Doo! Meets Courage the Cowardly Dog).

Muriel Bagge is Courage's owner and Eustace's wife. She is a plump, kind, hardworking Scottish elderly woman who took Courage in when he was an abandoned puppy.^[2] Muriel often carries a rolling pin that she hits Eustace with whenever he harasses Courage. She also likes tea and usually tends to her garden, as well as being an accomplished sitar player. Muriel also has a great fondness for cooking; however, her recipes tend to include an excessive amount of vinegar, much to the distaste of both her dog and husband. Most of all, she loves sitting in her rocking chair with Courage on her lap and watching television. Due to her kindness and sweet nature, Muriel is an easy (and often attractive) target for villains. The crossover movie Straight Outta Nowhere: Scooby-Doo! Meets Courage the Cowardly Dog was White’s final role before she died of liver cancer in 2021.

Voiced by Howard Hoffman (pilot), Lionel Wilson (Episodes 1–33),^[1] Arthur Anderson (Episodes 34–52), Wallace Shawn ("The Fog of Courage"),^[1] and Jeff Bergman (Straight Outta Nowhere: Scooby-Doo! Meets Courage the Cowardly Dog)^[3]

Eustace Bagge is Muriel's husband. He is a skinny, greedy, cynical, and sarcastic elderly man who is obsessed with his vintage truck. Eustace wears glasses identical in appearance to Muriel's. His brown hat shields his glistening bald head. Eustace is the current owner of the farmhouse, which was previously owned by his now-deceased brother Horst. Eustace regularly yells at Courage and calls him a "Stupid dog!" He regularly dismisses Muriel as well, but he still does love his wife, as evidenced by his concern for her well-being in a few episodes, like "The Demon in the Mattress".

Lionel Wilson originally voiced the character, but left midway through the third season due to illness (and eventually died five months after the show ended^[4]) and was replaced by Arthur Anderson. However, many vocals and sounds of grunts, laughs, screams and catchphrases from Wilson have been used while Anderson was recording. In the 2014 short titled The Fog of Courage, Wallace Shawn replaced Anderson as the voice of Eustace. In the crossover special with Scooby-Doo, Straight Outta Nowhere: Scooby-Doo! Meets Courage the Cowardly Dog, veteran voice actor Jeff Bergman plays Eustace.

Voiced by Simon Prebble (series), Paul Schoeffler ("The Fog of Courage"), and Jeff Bergman (Straight Outta Nowhere: Scooby-Doo! Meets Courage the Cowardly Dog)

Courage's computer who speaks with a British accent and gives him advice on how to deal with crazy situations. Located in the farmhouse attic, he is very cynical and sarcastic towards Courage and has a habit of regularly cracking jokes in any situation. The Computer also appears to often provide Courage with sarcastic and unhelpful advice, but is nevertheless supportive of him.

Voiced by Paul Schoeffler^[1]

Dr. Vindaloo is an Indian doctor with a thick accent, whom Eustace and Muriel see when something is wrong. He is one of the few characters in the series who can perfectly understand what Courage is trying to say. He diagnoses his patients as not having serious problems or that there is nothing that he can do, but has, on occasion, been a great help. He often quotes “There’s nothing to worry about. Nothing at all. But, there's nothing I can do.” when questioned about certain health conditions or situations.

Voiced by Mary Testa^[1]

Shirley the Medium is a small green Chihuahua garbed as a stereotypical Gypsy fortune-teller who resides in a dilapidated caravan. She has a strong dislike of Eustace (whom she always refers to as "the stupid one") because of his greed and selfishness. Due to this she often places Eustace under curses to get him to be a better person. Shirley is one of Courage's three confidants, the others being the Computer and Dr. Vindaloo, and helps him occasionally by casting and reciting spells and playing the saxophone in-between verses.

Voiced by Paul Schoeffler^[1]

Katz is a sadistic red tabby cat with a British accent. He is Courage's nemesis and the show's most recurring antagonist, though Muriel and Eustace consistently fail to recognize him. He specializes in scam businesses and is extremely sadistic. Many of his businesses involve torturing or outright killing his customers; for example, in "Night at the Katz Motel," he fed his motel residents to flesh-eating spiders,^[5] and in "Klub Katz," he transformed the vacationers into machines to fight for him gladiator-style.^[6] All of his businesses enforce a strict "No Dogs Allowed" policy, forcing Courage to sneak in. He often challenges Courage to ironically banal games such as wall-ball and staring contests, which Courage invariably loses; nevertheless, he is always defeated in the end. Unlike the rest of the series villains, he is frequently accompanied by his own theme, which consists of a sinister hip-hop beat.

Voiced by Paul Schoeffler^[1]

Le Quack is a French-accent duck con-artist who first appears early in the show's first season, in which he has a fake amnesia-specialist license; he comes to the Bagges' house when Muriel suffers from amnesia.^[7] Since then, he frequently returns and manages to dupe Courage's owners into helping him commit crime sprees. Le Quack is also shown to be capable of escaping custody such as when he was first arrested, crashing the police car in the process, and later causing a fire at prison.^[7]

Voiced by Tim Chi Ly

Di Lung is a Chinese inventor who first appears in the episode "Hothead". He is very inconsiderate and rude and usually gets caught in the middle of the chaos happening in Nowhere, prompting him to shout his catchphrase of "Watch where you're going, ya foo!", which is a running gag in the series, because he uses said phrase hypocritically, when he is clearly in the wrong despite claiming that the other person is wrong.^[8] He is the inventor of Mecha Courage.^[9] Di Lung also has two aunts: one good and one bad, who are both the Empresses of China; thus, this could make him royalty.^[10]

Voiced by Billie Lou Watt^[1]

Ma Bagge is the mother of Eustace and Horst and Muriel's mother-in-law, who shares a love-hate relationship with the former, usually calling him "Stupid Boy". She lives in a trailer and is the widow of Icket Bagge (Eustace’s father). Like Eustace, she is actually bald but wears a wig and looks almost identical to her son, but much shorter, along with being insecure due to being bald, but she does have her teeth. It is learned that Ma and Horst's ill treatment was part of Eustace's negative personality. She tends to treat Courage kindly whenever Eustace is around, possibly because she knows it annoys him, though she also has a love-hate relationship with him, and calls him "Stupid Dog" just like Eustace does. She's also the owner of Growth Industries, a company that produces wigs and experiments on certain people with a rare blood type, one that Muriel has.

Voiced by Peter Fernandez (Benton) and Paul Schoeffler (Errol)

Benton Tarantella (a pun of Quentin Tarantino) and Errol Von Volkheim (a pun of Erich Von Stroheim and Errol Flynn) are a zombified duo of film directors. They would pose as ordinary movie producers to lure unsuspecting victims to their fates, killing them in the process as part of their ‘film’.

Tarantella returns in the episode, "Angry Nasty People", when he uses his camera to capture Eustace's nastiness towards Courage and Muriel, creating another version of Eustace named "Mr. Nasty."

Voiced by Andre Sogliuzzo^[11]

Buschwick (though he bans people from calling him that, ordering everybody to refer to him as simply "Schwick") is a cockroach who comes from a New York City neighborhood of the same name. He appears in the episode "Courage in the Big Stinkin' City" and invites Muriel, along with Courage and Eustace, backstage at Radio City Music Hall that is close to Rockefeller Center in Midtown Manhattan in New York City, New York so that Muriel can rehearse for a sitar concert which was a prize that she won in a contest.^[12] Bushwick sends Courage away to retrieve an evil package, threatening to sentence Muriel to be a victim of an unseen monster behind a locked door if he does not receive the package before curtain time, adding that the dog better not get the police involved, which also results in Muriel's demise. He gets arrested by the New York City Police Department police officer in the end, however, while Courage and Muriel get to her concert.^[12]

Buschwick owns a pet that is locked behind a mousehole door in his rehearsal room. The unseen monster is responsible for the demise of previous visitors who entered the room (their bones are visible inside) and he warns Courage to recover his package before the curtain rises, without involving law enforcement, otherwise, he will release the monster on Muriel. Courage acquires the item, but the insect finds that the contents are damaged, causing him to release the creature, attempting to kill Muriel. Courage and Muriel escape unharmed, but the creature devours Eustace.

Voiced by Howard Hoffman

The Chicken from Outer Space is the show's first villain, introduced by the pilot episode of the same name. His eggs are unlike regular chicken eggs as they have red spots with a red yolk, are mutagenic and whoever eats them will turn into one. In his first appearance, he tries to take over the farm, he lays eggs in the chicken coop which are eaten by Eustace, and ends up being shot by his laser gun, turning into a headless roast chicken. He later returns in "The Revenge of The Chicken from Outer Space" where he wants to use a plunger to rip off Courage's head and put it on his roasted body. He ends up ripping off Eustace's head and tries to destroy Courage but is then blown up in his spaceship when a rocket blasts into it. In "Son of the Chicken from Outer Space", his three-headed son is sent to Earth to avenge him and kill Courage. Unfortunately, like their father, they are no match for the timid dog and fear that they will never be able to go home until Courage is dead. Feeling sympathy for them, Courage helps them by taking fake pictures to make it look like they succeeded in killing him and fooling their mother into thinking that their mission was a success.^[13]

Voiced by Paul Schoeffler

The Snowman is a talking snowman believed to be the last of his kind due to global warming. In his first appearance, he tries to steal Eustace and Muriel's "anti-melting" gene. He returns in the episode "The Snowman's Revenge" where he turns the farmhouse into the West Pole and freezes Courage and his owners, however, he reveals how he lost his home and friends. After Courage restores his homeland and his friends, he returns home to reunite with them. He has a voice pattern like that of the Scottish actor Sean Connery.

Voiced by Paul Schoeffler

The Cajun Fox is a sunglass-wearing fox obsessed with cooking who appears in the episode “Cajun Granny Stew”. He kidnaps Muriel to make a stew, using her as the final ingredient, but he ends up falling into the pot of stew himself when Courage falls on top of him and Muriel just as he is about to throw Muriel into the pot.^[14]

Voiced by Paul Schoeffler

Freaky Fred is Muriel's nephew who was sent to the "home for freaky barbers", due to his obsession with cutting the hair of people or animals to the point that they are bald. He speaks in poems and rhymes often repeating the word ‘naughty’ when describing certain situations.

Voiced by Paul Schoeffler & Arnold Stang

The Clutching Foot is a foot fungus that Eustace contracts before mutating into a sentient being. It resembles a giant purple left foot with heads for toes and acts as if it were a stereotypical criminal mob, with the big toe as the kingpin, and the smaller toes as his goons. It orders Courage to carry out crimes during the episode.

Voiced by Guy Paul

Dr. Gerbil is a gerbil who speaks with a Southern accent, who has gone mad due to being experimented on and being trapped by his previous owners. He is now a mad scientist, who performs strange experiments on humans with homemade cosmetic products, because he believes that he needs to exact revenge on humans for what they do to animals.^[15]

Voiced by Paul Schoeffler

Dr. Žalost is "the greatest unhappy scientist who ever lived" who lives in a giant, moving tower. He lives with his assistant, Rat, whom he constantly asks for a hug. He demands 33⅓ billion dollars from the city of Nowhere to fund his "Unhappy Cannonball" project, only to be brushed off by the city's officials as a scam artist. In retaliation, Žalost attacks the city by firing unhappy cannonballs from his mobile tower, making the citizens of the city depressed and unproductive. Despite receiving his money in the end, he refuses to return the inhabitants of the city to normal, as he is jealous of the happiness of others. He then turns his attention towards the Bagge family, determined to inflict sadness and depression on all of the inhabitants of Nowhere. His name Žalost is a word of Croatian, Serbian, Bosnian, or Slovenian origin meaning "sorrow" or "sadness".

Voiced by Paul Schoeffler^[16]

The Goose God is an goose who came down from the heavens to search for the woman of his dreams, and ended up falling in love with Muriel, whom he competed with Courage and Eustace to make his wife and queen (even though Eustace is completely unaware this is happening). He later falls for Eustace's truck after hearing it honk.^[17] He has made cameos in various other episodes (usually lying on top of the truck^[18]).

Voiced by Michael Allinson

Jeeves Weevil is a giant, polite, blood-sucking weevil who wears a blue tuxedo and hat. When the Bagges accidentally run him over with their truck and injure him, he is accepted into their home.^[19] While a seeming gentleman, he begins to suck the life out of the ever-oblivious Muriel and Eustace. He does not suck out dogs' lives, so Courage is unharmed. He succeeds at sucking out Eustace's life.^[19]

Voiced by Jorge Pupo

The King of Flan is an overweight man with a Spanish accent and the proprietor of a company that makes flan. He produces a TV commercial that uses hypnotism to attract customers, all of whom become morbidly obese after eating too much flan. Courage comes to stop The King of Flan from broadcasting on all the networks and causes The King to accidentally hypnotize himself.^[20] The company is located at 1 Flan Drive in Flansville, Kansas.^[20]

This is a 3-headed dragon that does not play a villainous role but is present in 'Courage in the Big Stinkin' City' as a creature hidden behind a door inside an apartment block that Courage enters to search for a package for Schwick.

Voiced by series creator John R. Dilworth

King Ramses is the ghost of a pharaoh from ancient Egypt. Two cat grave robbers steal a slab (decorated with images of King Ramses and pictures corresponding to each of his three curses) from his tomb and flee to Nowhere, but Ramses appears and demands the return of his slab.^[21] They refuse, so Ramses summons a swarm of locusts. He later attacks the farm when Courage finds the slab and Eustace refuses to return it after discovering it is worth a fortune, summoning a flood of water, a loud record player, and locusts. Eustace finally gives in and Courage throws the slab out of the house. After Eustace reclaims it, Ramses unleashes one final curse that imprisons Eustace in the slab as punishment for his greed as it is returned to Ramses's crypt the next day.^[21]

Voiced by Daniel Oreskes

Mayan Baker, who appeared in the episode "Courage Meets the Mummy", is the reanimated corpse of a Mayan royal baker. In ancient times, the baker served cookies to the Mayan princess until she falsely accused him of stealing cookies and selling them to villagers for money, but the thief was really her trusted royal poobah. Thousands of years later, Professor Frith accidentally resurrected the Mummy. After attacking him, the Mummy decided to take revenge against Eustace and Muriel. He mistakes them for the princess and poobah. With some setbacks, the Mummy finally arrives at the farm where Courage hypnotizes Eustace and Muriel into thinking they are the Mayan Princess and the Poobah. After recreating the situation from thousands of years earlier, Courage surmised that the Baker was framed by the Poobah. Satisfied, the Mummy decides to return to his tomb to eternally rest in peace when Muriel gives him Eustace's polka-dotted blanket for his entombment.

Voiced by Peter Fernandez

Mad Dog is a Doberman and the fierce leader of an evil dog-gang who began dating Bunny until Courage came to her rescue. He is shown to be possessive and abusive towards Bunny to the point of forcing her to not see her best friend Kitty, as he will bury both of them if they are seen together.

Voiced by John R. Dilworth

Mecha Courage is a robotic version of Courage that was created by Di Lung in an attempt to prove that he has created a dog that is superior to Courage in every way.^[9] Mecha Courage resembles a mini-dome, colored pink with a purple underside and tail, on wheels, with a red, blinking light for a nose.

Voiced by Arthur Anderson

Mr. Nasty is a character created by Benton Tarantella from Eustace's true evil essence.^[22] He is similar to Eustace (both in identity and personality), only with sunglasses in place of his eyeglasses, blue skin, and a deeper voice. After Mr. Nasty is brought into existence, he co-stars in Tarantella's reality TV show Angry Nasty People alongside Eustace, in which they both mistreat Courage and Muriel.

Voiced by Arnold Stang

Mustafa al Bacterius is an parasitic alien who appears in "Mission to the Sun". When Courage and the Bagges are sent on a mission to prevent the Sun from burning out, Bacterius attempts to sabotage their mission by firstly infecting and controlling Muriel's mind, and then using her to destroy their spaceship. Eventually, he is sucked out of the ship through the toilet and infects Eustace at the end of the episode.

Voiced by Ruth Williamson

The Queen of the Black Puddle is an otherworldly siren temptress who resides within a supernatural black puddle. Her sinister goals are to seduce men gradually until she eventually manages to guide them to her puddle, where she eats them. She appeared in the episode of the same name where she successfully manages to charm Eustace and almost succeeds in devouring him, but Courage triumphs over her and escapes back to the surface with Eustace. At the episode's end, when Courage is bathing, a canine version of the Queen of the Black Puddle appears from the bath water, leaving Courage confused and puzzled. She later returns as part of a large villain supergroup to get rid of Courage in the episode “Ball of Revenge”.

Voiced by Paul Schoeffler

King Kong is a large ape who appears in the episode "1,000 Years of Courage". When Courage and his owners are sent to a future Earth inhabited by talking banana people, the Big Ape poses as the Banana God to devour the banana people, while his nephew disguises himself as a benevolent sovereign. After the episode, both monkeys are musicians for the banana people.

Voiced by George Hall

Cruel Veterinarian is the main antagonist of the episode "Remembrance of Courage Past", and the only veterinarian who was responsible for separating Courage from his parents as a puppy. He manipulated Courage's parents into talking with them alone, which was revealed to be a trick as he captured them. Courage followed the evil veterinarian to his secret lab as it was revealed that he was shoving and locking them in a rocket ship. This was part of his secret breeding experiment, to see that normal dogs (in space) would breed space dogs. However, Courage attempts to save his parents but is spotted by the vet, who chases him into the lab, finally going down a garbage chute to avoid being captured by the vet. He watches as his parents are sent to space, saddened that he couldn't save them. He was later adopted by Muriel. Years later, Muriel and Eustace took Courage (still traumatized by the events) to the same vet that kidnapped and launched his parents, after recognizing him from the past, talking to them about speaking to him alone, which was secretly just a facade as he tries to do the same actions that he did to his parents earlier to Courage. Courage is then caught by the evil vet, who then starts the countdown and then traps Courage in the rocket. When Muriel and Eustace discover his true nature, as well as his attempt to rescue Courage, he decides that Muriel and Eustace "have seen too much", and that he cannot allow his operation and research to be discovered and exposed to the public. He catches Muriel and Eustace with a net, briefly explains that "they will become the first humans to see [his] secret experiment at work", and claims that "breeding dogs in space is the future" of normal dog breeding (with Courage opposing the crazed vet's evil space breeding scheme), before trapping them in the rocket to be sent into space to prevent them from interfering with his cruel plan. However, Courage saves his owners from the imminent launch and foils the evil vet's plans, trapping him in the rocket instead. As the countdown to the launch ends, the rocket engines ignite and the rocket itself lifts off with the vet inside, finally ending his cruelty to dogs for good. At the end of the episode, his rocket already crash-landed on an unnamed planet, he opens the door and is then petrified, finding out that all the dogs (including Courage's parents, and the same dogs seen on the milk carton's "Missing" advertisement at the beginning of the episode) have survived, which meant that his breeding experiment to see that normal dogs would breed space dogs has failed. Out of pure anger and vengeance by the dogs, the Cruel Veterinarian laughs nervously onscreen for the last time before he is dragged off in a net and brutally mauled by the vengeful dogs off-screen for his actions, presumably to death. He is heard screaming in pain during the attack.^[2]

Voiced by Winnie Chaffee

The Empress is the aunt of Di Lung, and she appeared in "Squatting Tiger, Hidden Dog", where her source of power (a magic silkworm) is dying and needs the bones of someone truly innocent to recharge it.^[10] She tries to steal Muriel's bones, but is stopped by Courage and the Empress' twin sister (who is good and is the true Empress). The Bad Empress made a cameo appearance in "Aqua Farmer".^[10]

Voiced by Jim Cummings

The Great Fusilli is an Italian alligator devoted to theater arts who turns people into puppets so that they cannot leave his show. He is defeated when he mistakes Courage for a ghost and falls off the balcony and becomes a marionette himself, but not before changing Eustace and Muriel.^[23]

Voiced by Dennis Predovic

The Shadow is the living shadow that can change his shape and appearance. In the episode "The Shadow of Courage", he becomes free after a cruel old miser had collapsed and passed away in his laboratory, he later terrorizes the people of Nowhere by frightening them but was forced to retreat to the Bagge estate during a lightning storm where he began scaring both Courage and Eustace. Eventually, Courage decides to confront him he reveals that he never wanted to be like the old man and wants to become a movie star, Courage then takes the Shadow to see the night sky where he can become an actual star, happy with this revelation he waved goodbye to Courage and jumped into the cosmos, turning into a new star.

This is another monster that is also not antagonistic but is seen in 'Courage in the Big Stinkin' City' as a second creature hidden behind a door inside an apartment block that Courage enters to search for a package for Schwick.

The Weremole is a mole similar to a werewolf but much smaller, yet just as fierce. It has a taste for rabbits and people and if a person is bitten by the weremole, they become one themselves. Its bite does not affect other creatures. The only way to reverse the transformation is to feed one of the weremole's hairs to the victim. The weremole bites Muriel on the hand and when the moon is full she transforms into a weremole.^[24] Courage and Eustace team up realizing that they are in more trouble than they thought. Courage and Eustace defeat Muriel when Courage drops one of the original weremole's hairs in Muriel's mouth, and Muriel returns to normal.^[24]

The Windmill Vandals are a group of 4 horsebacked Vandals who once plagued the land of Nowhere. The farmer who once lived in the farmhouse where the Bagge family now resides constructed the windmill next to the farmhouse, and inscribed several runes, one on each blade of the windmill, to keep the Vandals away. In the episode in which they appear, the windmill breaks, and the Vandals appear as wraiths to come and destroy the farmhouse (even though there were other instances where the windmill was damaged throughout the show and the Vandals did not appear). The mill is repaired and broken several times, until finally it is fully fixed, and the Vandals banished forever more.

The violin girl is a third creature hidden inside Schwick's apartment where the package he orders Courage to retrieve is also situated. The girl initially has her back to Courage, but then turns and scares him with a scary face. However, she is also seen with a normal face, implying that she can terrify people when it suits her needs.

Voiced by Todd Stashwick

Robot Randy is an outcast from a distant planet populated by gigantic violent robots. He is sent to conquer Earth to redeem his honor. Once on the planet, he enslaves Eustace, Muriel, and Courage, forcing them to build statues of him. However, he is internally conflicted, as he does not wish to hurt others, but instead to whittle reindeer. Courage challenges Randy in a competition to save the Bagges. When Courage wins, Randy releases them and returns to his planet, where he is accepted for his carving skills.^[25] His voice is based on Christopher Walken.

Voiced by Jason Antoon and Don Peoples

The Evil Eggplants are a group of talking eggplants that live under the Bagges' farm and are led by a large, deep purple eggplant and his dumb sidekick. They spy on the farm through a periscope placed in an eggplant Muriel grows. They decide to attack the farm because they are not getting enough water and because Muriel harvests the eggplant with the periscope, angering them because they believe it is unjust to eat eggplants. The eggplants take Muriel captive for her treatment of the eggplant, but Courage eventually saves her and floods the chasing army of eggplants, causing them to take root and leave the farm alone. This episode is the only time the eggplants make an appearance.

Voiced by Fran Brill

Eliza and Elisa Stitch are a pair of conjoined twin sisters who attempt to be immortal by sewing other women's souls into a quilt. They did this by making them put a symbol on a piece of fabric, turning the person into quilt material, then they say a chant "Be believe belong be believe belong leave the circle never weave this quilt forever."

Voiced by Loretta Palma

Mona Lisa is a woman painted by Leonardo da Vinci and is a work of art long adored by Muriel. After the Bagges are inadvertently locked inside the Louvre, an eerie alignment of the planets occurs and the exhibits come to life including Mona Lisa and The Thinker. Mona Lisa attempts to get the Thinker to kiss her, but he only thinks about it, true to his title. She ends up with another male statue after Courage hits him with Cupid's arrow and holds up her picture. She willingly went back to her painting with the male statue and let Muriel go. She only appears in the episode "So in Louvre Are We Two".

Voiced by Rod P. Houston

The Thinker is the masterpiece of Auguste Rodin who goes on a date with Mona Lisa during the episode. He is constantly saying, "Let me think." every time Mona Lisa suggests something that they should do. His thinking got in the way though, and he ended up alone in a painting after the planets were no longer aligned. He also only appears in the episode "So in Louvre Are We Two".

Voiced by Peter Fernandez

Conway the Contaminationist is an elderly man claiming to be 193 years old, who also claims that a filthy environment is "better" and "healthier" than a clean one ("Out with the good air, in with the bad"). He only appears in the episode of the same name, in which he pollutes the Bagge farmhouse and convinces Muriel and Eustace to be filthy as well.

Voiced by Babi Floyd

Chief Wicky Wicky is the overweight leader of an island tribe, who live on Hip Hip Island, looking for someone to sacrifice to their volcano god. He lives on the island with his daughter Wicky Wicky Woo.

The Space Whale is a giant whale from space who is capable of devouring planets, asteroids, ships, and comets. After it attempts to eat a pair of Star-Makers, the male squid sacrifices himself to save the female by exploding into stars that destroys them both. Like the Star-Makers, the Space Whale is the last of its kind.

Voiced by Gerrianne Raphael

The Fishionary is a purple female fish who serves as a missionary for the Fish Judges and their octopus coworker. She comes to the farm and takes the Bagges and Courage to the Judges' domain in a bus, falsely accusing them of committing crimes against sea creatures; however, it was all a ruse for her own scheme to take over the Bagges' home. Her deception is discovered thanks to Courage's actions. Outraged by the Fishionary's betrayal, the Fish Judges had the Bagges released while the Fishionary was punished in their place.

Voiced by John R. Dilworth

Floyd is a balding elderly man, who deals with various paranormal activities, often making cameo appearances on the show. He's usually a good person, but he's been a villain in some episodes.

Voiced by Tom McKeon, Todd Cummings (Cowboy Courage), Dennis Predovic (Stormy Weather) and John R. Dilworth ("The Mask")

Charlie is a delivery mouse and a personal friend of Courage's, usually helping Courage out in certain situations. He is referred to as Mr. Mouse, with his first name revealed as Charlie in the episode "The Mask". His interaction with Courage often ends with Courage exclaiming "Thanks, Mr. Mouse!", to which he replies "No prob."

Space Dino is a dinosaur-like alien that stands on an asteroid outside Earth's atmosphere, and is always seen with a tennis racket, which he uses to hit celestial objects. In the episode "1,000 Years of Courage", the Space Dino hits a meteor, which strikes Earth and causes time to progress 1,000 years into the future (taking Courage, Eustace, and Muriel into a new civilization of talking bananas), and later causes another meteor to strike the Earth (sending Courage and his owners back to the past).

Voiced by Dennis Predovic

Jean Bon is a pig butcher who runs a restaurant in Nowhere with his wife Mrs. Bon. He first appeared in the episode "Heads of Beef" where Eustace and Courage visit his establishment for some burgers when Muriel is sick, however, Courage suspects that he might be turning people into meat due to his burger resembling a gentleman he saw going to the restroom. It is later revealed to be a misunderstanding as his wife is sculpting meat to resemble customers and that the gentleman (who is a curator of culinary wonders) and Eustace are both alive.

Voiced by Gerrianne Raphael & Paul Hecht

Noble and Hope are Courage's parents whose appearances resemble Courage's, except his father had a mustache and his mother wore a hat with a flower on top and holding a blue purse. Not much is known about his parents or even their names during the series, although Courage's father was called Henry during one of the flashbacks, as they were seen only in the episode "Remembrance of Courage Past" centering on flashbacks to his parents in the veterinarian's office, where Courage last saw his parents. They were launched into space by the Cruel Veterinarian. Courage avoided a similar fate by escaping through a garbage chute, where he was found by Muriel.^[2] The Cruel Veterinarian was trapped (by Courage, during the vet's failed attempts to send him, Muriel and Eustace into space) in the rocket, and was launched in space, crash-landing on the planet where Courage's parents and other dogs resided.^[2]

In the prequel pilot Before Courage, their names were revealed to be Noble and Hope.^[26]

Voiced by Barbara McCulloh & Lori Ann Mahl

Kitty and Bunny are a female cat and a rabbit who are best friends. They appeared in the episode "The Mask" where Bunny is held captive by her abusive boyfriend Mad Dog and Kitty tries to save her, unintentionally getting help from Courage even though he's kept in the dark about the situation and is terrified of Kitty. At the start of the episode, Kitty obscures her face with a mask and believes that all dogs are evil; as a result, she physically attacks Courage several times while staying at the Bagge house. Courage attempts to steal her favorite mouse toy in retaliation and runs away with it, but has a change of heart upon learning the truth about Kitty’s past and that the mouse was a gift from Bunny. Courage later rescues Bunny and defeats Mad Dog and his gang. Bunny kisses Courage on the cheek and Kitty awaits Bunny at the Amtrak passenger train's rear, where they both reunite. Bunny tells Kitty that Courage saved her life. Kitty then admits that she had been wrong about dogs and helps Bunny onto a train she was on. The two thank Courage and ride off together. Kitty's mask was later used by Eustace to protect his face from explosions while he fixed the boiler. It was later confirmed by John R. Dilworth on his Twitter that Kitty and Bunny are now in a relationship.^[27]

Icket Bagge is Eustace's and Horst's deceased father, Ma Bagge's husband, and Muriel's father-in-law. He is mentioned in the episodes "The Sandwhale Strikes" and "Mother's Day". His appearance is very close to Eustace's, except he has a beard. He was very brave and big; as Ma quotes, "You [Eustace] couldn't fill his shoes!". This is no exaggeration, as his shoes were rather huge compared to his son. It is unknown how his relationship with Eustace was, whether he treated Eustace poorly like Horst and Ma or he treated Eustace with respect.

Voiced by Will Ryan

The Duck Brothers are three space ducks who are brothers. Their names are Donnie, Clyde, and Payne. One of them is always laying eggs even though he is male. They appear in two episodes, the first in which two of them abduct Muriel and place a mind-control device on her for their own purposes. Courage tries to rescue Muriel, only to find that the duck brothers were planning a rescue mission of their own (to save the other duck brother, who has been captured by the United States Government and is about to be made into dinner.) Courage volunteers to be mind-controlled instead, and they save the third brother. The three duck brothers reunite and leave. Two of the brothers make a cameo appearance in "Ball of Revenge", where they play guitars and perform as the half-time show.

Voiced by Ron McLarty

Captain Sharky (Real Name Sharky) is the main antagonist from the episode Serpent of Evil River. He is an obsessive pirate who is bent on finding and capture the monster Carmen. The Captain is a muscular man with teeth that seems separated, a long, blond beard, thick eyebrows, a tattoo of a shark on his chest, an anchor tattoo on his right arm, an hook replacing his right arm, a peg leg on his right leg, an eyepatch covering his left eye covered by a black eyepatch. For clothing, he donned a torn opened, blue shirt, which has the sleeves rolled up, blue pants,a black belt, black shoe on his left leg and a white captains hat with a golden fish hook on it. Before his true nature was revealed, he had normal teeth, no eyepatch, no hook and no peg leg.

Voiced by David Saire

Sandman is the king of sleep who resides in a tall castle that is made of sand in the middle of a forest, counting sheep indefinitely in a futile attempt to go to sleep. After stealing Muriel's "sleep" to cure his insomnia, which rendered Muriel sleepless, Courage tracked him down to retrieve it. After a prolonged chase, Courage found the Sandman's lost teddy bear under his mattress. With his beloved stuffed animal back, Sandman willingly returned Muriel's "sleep".

Voiced by George Taylor

Basil is a male burglar who appears in the episode “Family Business”. Bizarrely he calls Muriel ‘Mama Mashed Potatoes’, Eustace ‘Uncle Twinkletoes’ and Courage ‘Nigel’, after the members of his family who he lived with previously. He later sends the Bagges a letter explaining he has since given up a life of crime and has become an underwater electric eel massage therapist.

The Star-Maker is a squid from space who landed on Earth with her unhatched offspring. She and her mate are the last of their kind. After her mate died saving them from a space whale, she escaped to Earth to hatch the eggs. After being found near the Bagge’s farmhouse, Eustace calls the US government, which contains the squid in a mobile laboratory. Courage manages to hatch her offspring, who return to space to make new stars. Afterwards, the Star-Maker dies peacefully and her body becomes a garden of large flowers and bushes.

Voiced by Peter Fernandez

The Magic Tree is a magical tree that Courage grows, capable of making ideas and dreams come true. It can also talk. It grants wishes, whether they are good or bad, and it ends up granting a wish for Eustace which causes Muriel's head to swell up. Eustace then considers it a threat and decides to chop the tree down and Courage has to defend it for three days to cure Muriel. Although Eustace had a bit of sympathy, he chose to cut it down anyway despite its warnings of what would happen if he did. After the tree has been cut down and before it dies, it tells Courage how to cure Muriel. The tree had the last laugh against Eustace as the episode ended with Eustace's head swollen up just like Muriel's had been in retaliation for cutting it down.

Voiced by Vima Bauer

Carmen the Serpent is a monstrous, one-eyed sea serpent who lives in the Evil River, and is "evil" according to a sea captain. The sea captain fools the Bagges under the false promise of a luxury cruise, only to reveal that he actually shanghaied them to sail through the Evil River to find and hunt down Carmen. The sea serpent kidnaps Muriel and takes her to her cave and starts singing opera to her. Courage comes to Muriel's rescue, only to realize that Carmen was not trying to harm Muriel. Courage helps Carmen to dodge and defeat the evil captain.

Voiced by BJ Ward (Hugo) and John R. Dilworth (Herman)

Twin Raccoons are two raccoon brothers who are revealed as bandits. They attack Courage and kidnap Muriel because they want her as a parent. Muriel feels pity on them and accepts them like her own adopted children.^[28] At the end of the episode, Muriel's place has been taken over by Eustace as a new parent.^[28]

They reappear in the episode "Farmer Hunter, Farmer Hunted" as audience members in the Hunt for Knowledge game show, however, their names are "Hugo & Herman".^[28]

Voiced by Peter Fernandez

Horst Bagge is Eustace's deceased older brother and Muriel's brother-in-law, who was a hunter. The cause of his death is unknown. He was the former owner of the farmhouse as seen in a flashback in the episode "Farmer Hunter, Farmer Hunted". Eustace is now the current owner presumably inheriting the farmhouse after Horst’s death. He often belittled Eustace for his low masculinity.

In the episode “Shirley the Medium”, Horst leaves behind a box containing all the money he left behind. However the box is guarded by a demon to prevent anyone from obtaining the contents.

Voiced by Paul Schoeffler

Nowhere Newsman is a local TV news reporter. The Nowhere Newsman introduces every episode stating, "We interrupt this program to bring you the Courage the Cowardly Dog show."^[29] He is also seen in some episodes when the television is on, conveying news about the antagonist.

Duncan is the storm-goddess's pet dog who looks similar to Courage who gets lost.^[30] The storm-goddess mistakes Courage for Duncan and tries to take him, but Muriel argues with her (as such, the storm-goddess angrily destroys the farmhouse with a storm). Mr. (Charlie) Rat tells Courage where Duncan is.^[30] Courage looks for Duncan and finally finds him in a sewer licking the God-Bone, a bone that no dog can ever stop licking once licked.^[30]

Voiced by Gerrianne Raphael

The Librarian appears only in the episode "Wrath of the Librarian". She never speaks, only whispering "Shhh" while the lion statues in front of the library speak on her behalf. She operates the library in Nowhere where she punishes anyone who doesn’t return their borrowed library books on time.

Voiced by John R. Dilworth

Clyde the Fog Spirit appears in the animated special "The Fog of Courage" who comes to the farm to get the amulet that belongs to the Fog Ghost's long lost love.

Voiced by John R. Dilworth

Bigfoot appears only in the episode "Courage Meets Bigfoot". Although portrayed as a scary monster, in the same episode, he's actually friendly and slightly sensitive. At the end of the episode, it's revealed that his name was Theodore and he simply got lost after playing far away from home (despite being told by his mother to not wander off).

Kangaroo Monsters are giant kangaroos who like to squish whatever is smaller than them. They are currently extinct. Because they are so powerful, only another Kangaroo Monster can defeat one. Following a bone implant using a Kangaroo Monster's bone, Eustace mutates into one, which forces Courage to do the same in order to defeat him.

Voiced by Kate Micucci

A hi-tech tablet that belongs to Velma Dinkley, which Scooby and Courage connect to Courage's computer to help it provide them with the information they need to rescue their friends. She and the computer both become smitten with each other during their interfacing. Her voice sounds identical to Velma.