|This 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.|
|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.|
As 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.
Kat's Sleep FormulaEdit
This 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
|It 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
|As 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
In "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 MachineEditThis was built by Kat to absorb Fishy Frisky Bits but was later stolen by Coop. It appeared in "Don't Give Me No Static".
In "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!
Kat's most deadly weapon, and almost eaten by Millie. In "One Big, Happy Family", Kat makes Millie's cupcakes poisonous. 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 and have your family almost eat it and die, Kat knows Burt and Millie are Coop's only family after something happened to Mrs. Burtonburger and she probably won't be able to find Coop or have Coop find her.
In "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 Coop rescued her and the tasty cupecakes! Unfortunely Coop was grounded.
Locked Storage CellEdit
In "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 GrowthEditin "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.
Grass growth: It makes grass grow over 7 feet tall!
U.F.O FuelEditIn U.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.
Also in U.F. Float Kat turns a parade float into a better looking U.F.O to try and get home.
House of DoomEdit
In House of Scream Kat ruins the Halloween fundraiser by making all the tricks all too real.
Laser/LightsaberEditWhen 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 2EditKat 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
Kat makes this in Something about Fiona from Kat. This is one of Kat's pranking traps as he carved a foot ball to make it only an image from a card board sheet.
Explosive Soccer BallEdit
In Tickled Pink, Kat disguises Dennis as Millie using a squirrel, a dress and Millie's glasses.
In 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.
In Flea Brains, Kat makes flea-sized mind control robots, and he builts this remote to control all of them.
We see this in the Episode Teed Off.
Water Swapper FormulaEdit
In Menace the Dennis, Kat makes a formula to swap water in milk.
This appears in Over the Radar.
Kat's Mini Eclipse MakerEditKat made this in Kat of Diamonds so 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 SatelliteEditKat makes this in Under Destruction.
Kat weapons of destructionEdit
All weapons made by kat in Under Destruction.
A weapon of Kat used by Coop.
A weapon of Kat used buy Coop during Under Destruction.
Kat made this in Under Destruction.
Kat made this in Under Destruction.
Super ShoesEditKat made Coop's light speeds Super Shoes so he could easily find out how many people own either dogs or cats.
Kat talcEditIt 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 controlEditIt 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 machineEditKat used this machine to send gifts of Valentine's Day from Earth to his girlfriend. It seems to be made of bathtub.
Teleport machine 2EditIt 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 3EditIs 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
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.