Kat (Kid vs. Kat)

Kat (most commonly known as Mister Kat or Agent 27-B) is the main antagonist of the Canadian animated series Kid vs. Kat. He is an alien cat who is sent to invade the earth and help his fellow alien cats take over the world. But after Millie Burtonburger, who is the younger sister of Coop Burtonburger, found him in the forest, she asks her dad Burt if she could keep him and he let her, only because she threw a fit about it.

Why This Cat Should Stay Out Of Coop's Life

 * 1) Despite being the main antagonist of the show, he is very insufferable in this show and the worst character in the show. He has done many sinful deeds to Coop, Dennis, and Fiona that make him downright unlikable.
 * 2) He constantly mostly tortures Coop by attacking him, harming him, framing him for stuff he himself did and easily getting away with it scot-free, foiling Coop's plans, destroying evidence of his true colors just to make Coop look like a fool, and pretending to be an innocent cat to Millie.
 * 3) He is just the embodiment of a generic doomsday villain who wants to help his pals take over the world, or even the universe.
 * 4) He is infuriatingly painfully cunning, clever in a bad way, and is easily quick to get away with almost anything that he has done instead of getting caught for once.
 * 5) Whenever someone besides Coop and Dennis finds out about his true colors, he erases their minds just so he won't get caught.
 * 6) The only reason why he manages to get away with his evildoings most of the time is just because of how blind most of the characters in the series are.
 * 7) He tries way too hard to fit into the karma houdini trope and shockingly makes characters such as Bendy and Chester the Duck look like saints in comparison.
 * 8) He can even get to be pretty scary sometimes. In "Tom-Kat Foolery", he makes a terrifying nightmare face after Coop pranks him while he was checking some plans. This could scare little children.
 * 9) There are also episodes in the series that try to make us root for him, since Coop usually thinks he's trying to take over Earth, but due to all the horrible and sinful things Kat has done in previous episodes, Coop's behavior is perfectly understandable.
 * 10) *The show tries to make us think that Kat's main goal on Earth is to collect Fishy Frisky Bits and help his people (The show is trying to make us think his main goal has good intentions). However, if you look closely, you will see that it's just part of his real main goal. He's only stealing Fishy Frisky Bits to keep his people alive while struggling to enslave humanity and rule the Earth since the fifth planet his race took over in ten years is dying.
 * 11) He is practically a rip-off of Zim from Invader Zim without his charm and likability.
 * 12) He was at his absolute worst in the series finale where he (as mentioned above in WHS#5) erases everyone's minds so nobody can know who he truly is and went back to fighting with Coop, so he basically won without getting full comeuppance or defeat.

Redeeming Qualities

 * 1) Although he usually intends to get away with things, he sometimes gets his comeuppance, preventing him to be part of the karma houdini party, but that isn't the best thing in the show.
 * 2) Despite being bad, Kat can be easily cunning, although it's what makes him a bad character.
 * 3) He is sometimes very caring to Millie.
 * 4) Despite being the main antagonist, he sometimes did help out in some episodes.
 * 5) * There are some moments where he teamed up with Coop sometimes.
 * 6) He occasionally did save Coop when he was in danger in most cases.
 * 7) His relationship with Dr. K was quite decent.
 * 8) There are instances where he can be cute.
 * 9) He is admittedly likable in a few episodes.
 * 10) Some people can find Kat admittedly, pretty funny.

Trivia

 * He, Millie, and Lorne share the same voice actress, who is none other than Kathleen Barr. This is very ironic since he is being trusted and spoiled by someone who shares his voice actress.
 * Despite the unfair ending, Rob stated on Twitter that he and Coop are now friends.