Villain Overview
I wish you hadn't done that.
~ Katz's catchphrase.

Katz is the most recurring antagonist in the Cartoon Network series Courage the Cowardly Dog (apart from Eustace). He is a red anthropomorphic cat who is Courage's archnemesis and is considered the show's main antagonist.

He was voiced by Paul Schoeffler.


He always cons Muriel and Eustace as he did with most other people into trying whatever service he is providing, but Courage never falls for his schemes. All of his businesses enforce a strict "No Dogs Allowed" policy, forcing Courage to sneak in. His catchphrase (typically uttered whenever he gets injured) is "I wish you hadn't done that".

Whenever he is ready to kill Courage, he enjoys "a little sport before dying." The following "sports before dying" he has done are:

Staring Contest

Most likely one of the most known things about him, he sits in a classic feline pose, and just waits for Courage to blink, he knows he will win, so he only does this because he likes seeing Courage suffer, after Courage gives up, he will without hesitation try to kill Courage, even if the contest was interrupted, Katz will still win.

Ball Game

This one is pretty simple, Katz will grab a heavy and spiky ball, and throw at Courage until he can't take it anymore and simply gives up. At times, the ball isn't even spiky or heavy, but just a simple ball.



The main humor and characteristic of Katz is that he is the very opposite of Courage, while Courage is pure good, Katz is pure evil.

But even though he is pure evil, he is still civilized and well-mannered because he called The Weremole "this unrefined beast".


Katz is a red anthropomorphic cat, with purple dots around his body and on his nose, with very very bright yellow eyes.

He is slender and has a long tail, a interesting thing about him is his eyebrows, which for the most part he doesn't have, but at times they just appear out of nowhere, for example in the episode A Night at the Katz Motel he suddenly has eyebrows.

He has different clothes for each time he wants to con someone, matching the businesses he specializes in in that temporary episode. Interestingly enough, in the Katz Kandy episode he doesn't have a special disguise.

Powers and Skills

  • Intelligence: Katz is extremely intelligent, he is very good at scamming oblivious people, as seen when he constantly scams Muriel and Eustace, and it's the main trait he is good at. Courage is portrayed as very stupid and dumb, whether Courage really is stupid or the cartoon is just making the viewers think this is debatable.
  • Manipulation: Same thing as the intelligence, he is very good at getting people to do what he wants, and as also mentioned before, he often cons Muriel and Eustace, but even Courage, he nearly turned Courage into a cylinder-formed candy, and almost killed both Muriel and Courage in the Katz Under the Sea episode.
  • Survival Skills: Even though often getting what he deserves in the end of each episode, he somehow always manages to get out and escape death, it is unknown why he always survives, but it most likely has to do with him being very good at tricking and being a con artist.
  • Business Knowledge: Mixing his intelligence and manipulation skills, and you got this, he is brilliant at getting people to his resorts and other businesses only to use them and get money.
  • Sadism and Torture Methods: He has many torturing skills upon his sleeves, in the Ball of Revenge episode, the last episode he is in, he is seen throwing spike balls at Courage and loves seeing him scream in pain, also in every episode he is in he enjoys "A little sport before slow dying", which is to make Courage feel even more pain. Overall, his personality can be summed up with that he is very sadistic and intelligent, and shows a good opposite of Courage.


Mr. Katz

During his Mr. Katz disguise, he has a white shirt with black buttons on it, with a flower, he has a white tie and a light blue-ish shirt inside of it.

Captain Katz

This disguise is somewhat similar to the Mr. Katz one, he has a button shirt and a tie, the shirt remains white, but the buttons are this time yellow and instead of a white tie, he has a blue tie, his hat looks like a classic captain-hat, it is white on the biggest part of the hat, but also has blue and yellow colors. This one also doesn't have pocket.

Aqua Katz

This one is nearly identical to the regular one, the only differences is that he has a snorkel and a pack on him that he uses to swim, this and Captain Katz are in the same episode, Katz under the sea.

Ball of Revenge

In this episode he has a rugby-football shirt and shorts, he uses spiky footballs to throw at Courage as a weapon.

Attempts on killing Courage and Others

This is a close-up look at Katz's attempts on killing important characters:


In the first episode Katz appears in, A Night At The Katz Motel, Katz has a strict "No dogs allowed" policy, like usual. His plan here is to get Courage outside, and without Eustace and Muriel seeing, he will try to kidnap him and give him to his pet spiders, and after he has killed Courage, he will try to kill Muriel and Eustace. He mentions that "no one ever checks out of the Katz Motel", making it sound like nobody prior to Courage, Muriel, and Eustace left the motel alive and that he successfully killed all his previous victims.

Staring Contest

After Courage gives up, his eyes will be totally destroyed, making him very vulnerable, giving Katz a good chance at killing Courage.

Candy Making

He puts Courage through his candy-making machine, and makes him into a cylinder-shaped candy. His attempt at killing him fails, however, when he tries to force Eustace into the machine, too, and is instead defeated by the farmer (one of the few times Eustace knowingly and intentionally helps to defeat a villain) when he forces Katz into the machine instead, turning him into candy just like Courage.


In the Klub Katz episode, Katz transformed Eustace and Muriel into concrete objects, matching their personalities, Eustace became a wrecking ball, who has a very destructive and bullying attitude, while Muriel became a washing machine, matching her being very hard working and passionate personality.

They are supposed to fight in a Colosseum, Katz absolutely loves this, fulfilling his sadistic needs. A funny thing is that Katz said when entering the spa that they were gonna feel like they were transformed, and he didn't lie, technically. Courage turns into a helicopter and flies away to save Muriel, Eustace breaks the Colosseum and nearly destroys Katz, it is unknown how Eustace managed to come home after this.

Blowing Up the Submarine

In the episode Katz Under the Sea, he tries to explode the submarine, while he tries to kill Courage and Muriel, he also does this because he wants to sell his own submarines to become even wealthier, in the most part of the episode, he fails, but after a while, when Courage tries to stop him, he throws Courage at the machine, bouncing Courage on the switch, breaking the switch.

Actually making Katz succeed, and apparently, there were more people on the submarine, so Katz gets other people he has no sort of connections with too with doing this, Courage drinks alot of water, and then burps it up, exploding the submarine, and making the innocent people along with Courage and Muriel escape, Katz gets chased by a shark, the downfall of his goal, and somehow he manages to escape after it.

This is probably his most sinister goal, as he doesn't only almost kill his rival Courage, but also a bunch of innocent people he doesn't even know.

Spiky Balls

In the final episode he is seen in, Ball of Revenge, his primary weapon is his spiky football, he throws it at Courage and is very successful with it, he has used this before, but that time he didn't do it to kill Courage, but more of an appetizer before his death, if you can call it that.

This was much more dangerous, as he actually makes Courage faint. He is close to winning, until Courage deals the final blow, doing an extremely loud screech, ultimately defeating the villains. It is unknown what happened to Katz after this.


A little sport before dying, old boy?
~ Katz
A captain does not have to explain himself to his first mate.
~ Katz disguising as a captain.
Leaving so soon? (Courage: OOOOOOOOOOOO!) There is no place to run… and no place to hide… Now you're going to learn why no one ever checks out of the Katz Motel! Hahahahaahahaha! Huhuhuhuhuha! Hihihihihihha! Bahahahaha!
~ Katz torturing Courage and showing his sinister laughter.
2nd place! 2nd place! I'm tired of 2nd place! 2nd place is no place as far as to I am concerned!
~ Katz expressing his jealousy against constantly coming 2nd place after Muriel in the cooking contest
I hope you find my jam, tasty, hmhm, hmhmhmhm!

(Muriel: What do you want with us?)
You see, dear lady, and, eh, "dog", it's been my misfortune to place at 2nd, year... after year, in the sweet stuff contest, sad, isn't it?
(Muriel: If it's the secret ingredient and you want to know how i do it, then you're out of luck!)
(Crack Crack) We'll see about that!

~ Katz demanding Muriel to give him her secret ingredient.
In two minutes and eight seconds this sub will hit bottom! And then... Tada!
(Starts flooding the submarine)


~ Katz almost killing Courage, Muriel, and the other innocent people on the submarine, but getting encountered by a shark after.
I really wish you hadn't done that.
~ On rare occasions, he says this instead.
Allow me! Huhuhuhehehihihi!

(Muriel: Oh no! Don't mix the colors!)

~ Katz mixing the colors…
(Eustace: WHERE'S MY CHAIR?)

Please join me for a relaxing visit to our spa, you will feel…

~ Not lying, just not what they thought he meant…
My love! Dinner has arrived!
~ Katz preparing to feed Courage to his "pet" spiders.
(Snap! Snap! Snap!) NO dogs allowed!
~ Katz.
I'm sorry, no dogs allowed.
~ Katz.


  • There is a fan theory that the reason the cartoon is so dark is that it is focused on how Courage sees the world, and how the world is structured in his mind, and Katz isn't one person, but symbolizes some strange humans that Courage meets. But this fan theory is somewhat debunked considering the directors stated themselves why it's so dark is because it is a parody on Gothic Horror.
  • He has a very remarkable similarity to another character from a cartoon made by the same person who created Courage the Cowardly Dog, named Fergurina, the cartoon is named The Dirty Birdy, hence Katz was design-wise most likely inspired by this character.


           Courage the Cowardly Dog Villains
Eustace Bagge | Katz | Le Quack | The Chicken from Outer Space | Ma Bagge | Shirley the Medium | Weremole | Cajun Fox | Rat & Weasel | Mattress Demon | Freaky Fred | Duck Brothers | Box Demon | King Ramses | Big Toe | Goose God | The Queen of the Black Puddle | Benton Tarantella | Errol van Volkheim | Snowman | The Precious, Wonderful, Adorable, Lovable Duckling | Fusilli | Robot Randy | Schwick | Basil | Dr. Gerbil | Mustafa al Bacterius | Kangaroo Monster | Alien Brain Visitor | Alien Brain Boss | Jeeves Weevil | McPhearson Phantom | Spirit of the Harvest Moon | Dr. Zalost | Mecha Courage | Velvet Vic | Conway | King Buffo | Tulip | Tulip Worm | Mondo | Fishtionary | Mr. Nasty | Stitch Sisters | King of Flan | Dancing Rats | Windmill Vandals | Big Bayou | Kitty | Mad Dog | Evil Empress | Ulcer | Cruel Veterinarian | Perfectionist