Crushing Boulder

[1]Kat's first invention; this is seen in "Let the Games Begin", where Coop is almost crushed by a huge boulder!. This was set up by Kat to crush Coop in return for blowing up his Alien collar.

Coop Collar

[2]Added by Coop+KatThis is seen in the "Me-Oh Me-Oh Meow" episode; Kat, tired of his new collar, manages to get it off and then modifies it so it can torture Coop. Kat had become tired of his new collar telling him what to do all the time, so he did all he could to get it off; once he did, he figured it was the perfect opportunity to torture Coop with it. The collar is nothing more than a modified pet collar, the only difference is it now has a human. function in addition to dog's and cat's.

Makeshift Communicator

[3]This is Kat's second invention; it is seen in the episode "Do Not Fort Sake Me" when Kat tries to communicate with his home planet. The device is made out of ordinary household items such as a cookie tray and metal tong's.

Claw Sharpener

[4]Added by HugeKidvsKatFan

As seen in the episode "Nip/Duck", Kat built this to resharpen his claws after the Vet trimmed them down; this device is also made from everyday household items such as a blender, cheese grater and an orange juicer.


[5]Added by HugeKidvsKatFanAs seen in the episode "Search and De-Toy", Kat built this rocket in an attempt to send food back to his home planet; the rocket is made out of ordinary household products such as a blender and a food funnel.

Remote Control

[6] This is also seen in the episode "Search and De-Toy"; seeking revenge upon the RC Helicopter, Kat modifies a TV remote and turns it into a remote control for the RC Helicopter. Kat thought that Coop interfered with the rocket on purpose so he decided to take control of the RC Helicopter and crash it into Old Lady Munson's yard. This device is nothing more than a modified TV remote; it is now able to pick up the RC Helicopter's frequency and wavelength.

Kat's Sleep Formula

[6]Added by HugeKidvsKatFanThis is one of Kat's more advanced inventions; it is seen in the episode "Flu the Coop", to put Coop to sleep and keep him from covering Kat in his germ's. The contents of Kat's Sleep Fromula might be comprised of soothing ingredients or it could just be made of a very powerful sleeping agent found on Earth or probably Planet Catnip. As the audience, the exact ingredients of the Sleep Formula are never revealed, this is probably to keep us wondering about what it could be made of.

Potion of allergyEdit

[7]Added by TheGabrielZaumIt is seen in the episode the Allergy. Mr. Kat invented this for Coop's father thinks he's allergic to Coop. He did it with hot sauce, powder pica pica, poison ivy, bottled pepper and onion.

The evil warrior MegazurgEdit

[8]Added by TheGabrielZaumAs seen in the episode Just me and Glue. Kat changed the warrior Lord Megazurg to attack Coop. But he goes is "The Backfire" when he discovers he also wants to destroy it, so Coop and Mr. Kat work together to destroy it.

Pencil Sharpener of DoomEdit

[9]Added by Coop+KatIn "How the Test Was Won", Kat fixes Coop's pencil sharpener to make it attack him by eating all the pencils and then spiting out all the erasers and metal parts.

Electric MachineEdit

[10]Added by Jos063This was built by Kat to absorb Fishy Frisky Bits but was later stolen by Coop. It appeared in "Don't Give Me No Static".

[11]Added by Jos063==Remote 2Edit== In Hack Attack, Kat "edits" Dennis remote control to make it go evil.

Face ScramblerEdit

[12]its the blender thingyAdded by Coop+KatIn "One Big, Happy Family", Kat creates a machine to mess up Coop's body, or "scramble his face". Coop soon figures out who made it, and detonated it. Somehow, when they get home, Kat manages to get it back. No one knows how he got it back, especially with Millie next to him 24/7!

Unknown food spiceEdit

[13]In "One Big, Happy Family", Kat puts an unknown spice on Millie's cupcakes (rumored to be food poisoning.) This was probably a trap for Burt or a way to torture Coop, since Burt told him to sit in the corner on an old bar stool and not move. Watching your nemesis make poison (if that's what it is) and have your family almost eat it and die, Kat knows Burt and Millie are Coop's only family after something (might have) happened to Mrs. Burtonburger and she probably won't be able to find Coop or have Coop find her.


[14]Added by Coop+KatIn "One Big, Happy Family" Kat makes a trap for Burt and or Coop since if Coop tried to save Burt, Coop would be grounded or if he was too late he would be grounded, but Millie took the bait and both Kat AND Coop rescued her. Coop was (possibly) grounded.

Locked Storage CellEdit

[15]Added by Coop+KatIn "Play N'Ice" we learn that Kat has a secret cell where he hides all his cat food. The lock to his food cell is voice activated. It was seemingly destroyed when it and the ice castle collapsed on themselves.

Plant GrowthEdit

[16]Added by Coop+Katin "Planter's Warp" and The Grass Is Always Meaner, respectively.

Monster Plant Juice: It can turn plants into monsters. Ingredients include ketchup, mashmallows, and Kat's hairballs. It also smells horrible.

[17]Added by Coop+KatGrass growth: It makes grass grow over 7 feet tall!

U.F.O FuelEdit

[18]Added by Coop+KatInU.F. Float

Kat has an idea to make the families U.F.O. float fly, so he can return home. So he makes proper fuel to go with it.


[19]kat measuring the storage in his new U.F.OAdded by Coop+KatAlso in U.F. Float Kat turns a parade float into a better looking U.F.O to try and get home.

House of DoomEdit

[20]Added by Coop+KatIn House of Scream Kat ruins the Halloween fundraiser by making all the tricks all too real.


[21]Added by Coop+KatWhen Kat gets fed up with Coop and Dennis's Ice Castle keeping him out, he creates a laser or lightsaber out of a turkey carver and a flashlight to break in.

Rocket 2Edit

[22]Rocket 2Added by CooperloverKat had made another rocket in Kid vs Kat vs Christmas, which was designed like Coop's Captain Blasteroid rocket but got electrified accidentally by Coop, when he was connecting the wires for the Christmas lights.

Soccer net trapEdit

[23]Added by TheGabrielZaumKat makes this in Something about Fiona from Kat. This is one of Kat's pranking traps as he made a soccer ball from a cardboard sheet.

Explosive Soccer BallEdit

[24]Added by Coop+KatKat makes an explosive soccer ball on the short Run Coop Run and reappear on Something about Fiona.


[25]Added by TheGabrielZaumIn Tickled Pink, Kat disguises Dennis as Millie using a squirrel, a dress and Millie's glasses.


[26]Telescope, made of normal objects.Added by Super FanIn It's a Rocket, Man, Kat made a telescope out of a glass cup, magnafine glass and Millie's glasses in order to see how the delivery pod with his weapons of doom were doing.

Remote 3Edit

In Flea Brains, Kat makes flea-sized mind control robots, and he builts this remote to control all of them. [27]remote control 3Added by Super Fan


We see this in the Episode Teed Off. [28]Added by Coop+Kat

Water Swapper FormulaEdit

[29]Added by TheGabrielZaumIn Menace the Dennis, Kat makes a formula to swap water in milk.

Rat LaserEdit

[30]Added by TheGabrielZaumKat makes a laser that transforms humans in rats, in Rat a phooey.

Kat's RobotEdit

[31]Added by TheGabrielZaumThis appears in Over the Radar.

Kat's Mini Eclipse MakerEdit

Kat made this in Kat of Diamonds [32]Added by TheGabrielZaumso he could steal things for his inventions and fishy frisky bits and other cat stuff he likes

Telepathy power helmetEdit

Kat made a mind control helmet to move heavy objects for a construction of a robot in the episode of season 2 Mind Games.

Vapourize laser 1Edit

Kat makes an advanced laser in the episode Swap wrecked.

Vapourize laser 2Edit

Kat makes a second laser in the episode Swap wrecked.

Steel strike weaponsEdit

Kat makes a steel propelled fan threat floats and destroys anything within its path.

Location SatelliteEdit

[33]Added by KAT2011Kat makes this in Under Destruction.

Kat weapons of destructionEdit

All weapons made by kat in Under Destruction. [34]Added by KAT2011

Umbrella waveEdit

A weapon of Kat used by Coop. [35]Added by KAT2011==Missile launcherEdit== A weapon of Kat used buy Coop during Under Destruction.

[36]Added by KAT2011==Ice rayEdit== Kat made this in Under Destruction.

[37]Added by KAT2011==FlamethrowerEdit== Kat made this in Under Destruction.

[38]Added by KAT2011==Super ShoesEdit== Kat made Coop's light speeds Super Shoes [39]Added by RaggaRso he could easily find out how many people own either dogs or cats.

Kat talcEdit

[40]Added by Lord DhaosIt is seen In the short Katnapped and in russian version katnapped episode is called in the dreams the kat . It is a special powder made ​​by Mr Kat for him. It is used by Coop to enter the dreams of Mr. Kat and ruin.

Cybernetic mind controlEdit

[41]Added by Lord Dhaos[42]Added by Lord DhaosIt is seen in It's All in Your Head. This invention is made by Kat. It has used to get a USB key with a super secret data, that controls a kind of satellite lasers, to destroy so many places on earth.

Teleport machineEdit

[43]Added by Lord DhaosKat used this machine to send gifts of Valentine's Day from Earth to his girlfriend. It seems to be made of bathtub.

Teleport machine 2Edit

[44]Added by Lord DhaosIt was shown in episode "Rhymes with Coop", where Kat kommander tried to send rhymes to Earth, because there was a crisis of rhymes on the Catnip.

Teleport machine 3Edit

[45]Added by Lord DhaosIs seen first in "Who's Haunting Who?". It is used to bring the King's army of cats to the Earth. But teleport to it is very difficult.

Modified control botEdit

Kat made this in who and whos armour [46]Added by KAT2011

robotic suit Edit

Seen in Good Luck Harm. Kat has a blueprint of the suit, then coop steals it in the middle of a hokey game but then Kat gets it back and puts all the good luck charms in the neiberhood and puts it in the middle. So it's partly a good luck charm.

Alien TV broadcast

It is shown in The Three arghs when kat wanted to watch TV from his planet.

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