Kat

Name	Kat (Rumored to be called, on his home planet, Karlson Tremors III)
Played By	Kathleen Barr
Type	Catnipian Alien Cyborg
Details	Kat, or Mr. Kat as Millie calls him, is a alien cat who crashed on earth and plots to get back home, though there isn't yet an episode about how he came to Earth (hopefully will find out in Season 2). It is seen in the opening title as him crashing into some trees, over time viewers noticed that he is stuck on Earth as he calls for help, he is also known to be trying to make a army also shown throughout [a few of] the episodes, Kat has a big taste for Fishy Frisky Bits; he would even team up with Coop to earn some. While on earth, Kat hates Coop more that anything as he always stops his plans, in the end, this is why the title of the show is called "Kid vs Kat". In some episodes Kat has a collar with more alien powers; some powers it has are the power to call his home planet and teleportation, which was disabled in the first episode, by Coop, trapping Kat on earth.

Kat is a cat-like alien which, upon arriving to Earth,was adopted by Millie

as a stray cat. It hates Coop because he

Kat and his Bomb

 stole his alien collar to see who it belonged to and to understand it's origin, but blew it up in the process, removing the teleportation function. Kat seizes every opportunity to harm or even kill Coop as revenge for trapping him on Earth. Kat, however, is good to Millie,mainly because she feeds him every day with Fishy Frisky Bits. When he is not seen or not trying to do something to Coop, he tries to find a way to send Fishy Frishy Bits back home, tries to contact his home planet, or tries to get back home. He is so good towards Millie, in a episode (One Big Happy Family) he even tried to save her! He is a scientistic genius, as he was able to combine a sculpting machine and a lantern into a LIGHTSABER! He is also part cyborg,and sometimes his eyes glow red because of his rage. He gets extremely angry when somebody steals his food, as demonstrated in "Happy Campers".

In "Nip/Duck", this cybernetic and complex organism is fully shown thanks to an x-ray: Kat is more machine than organic being and he has two brains and three lungs. His brains are not robotic, but each one of them is connected to a motherboard. The X-ray doesn't show clearly if his paws and his eyes are mechanical or not, but several hints within the show suggest that they're artificial too. He has three strange machines inside his body, one in the throat and two in the belly; their function is unknown, but the machines in the belly seem to be a prosthetic heart and an artificial stomach. Kat also has an artificial left eye, capable of X-Raying objects, that can be seen in the upcoming episode Christmas Special 1/2 (Half).

Coop believes Mr. Kat is totally evil and ill-intentioned, but he actually has a good side since he's truly affectionate towards Millie and his girlfriend, who is shown in "The Kitty Vanishes". Kat got along with Coop once in the episode Kat Whisperer but it turned out he was faking; still, he has the ability to be nice to Coop but that would end the show!