1.) A being from the planet Irk who who was sent out on a fake mission to invade a random planet selected by his rulers, the Almighty Tallest. Is not truly an invader and is overzealous about his "mission." Stands at about 4 feet tall and has green skin, with two antennae protruding from his head and large ruby eyes. Owns a optimistic SIR unit whose name is GIR and loves Zim very much. Goal is to take over and/or destroy the Earth. Dislikes humans and almost everything related to humans. Archrival is Dib, a classmate at "Skool" who is determined to capture Zim to save the planet and become a famous paranormal investigator. Zim is based in the United States where he apparently set his residence in an unknown city.

2.) A TV show that premiered on the TV channel Nickelodeon on March 30, 2001. Created by Jhonen Vasquez, directed by Steve Ressel. Stars Richard Horvitz as Zim, Rosearik Rikki Simons as GIR, Andy Berman as Dib and Melissa Fahn as Gaz. Was cancelled in 2002, but completed episodes were released on DVD in 2004.
1.) "Invader Zim, signing off!" - Zim
2.) I like the show "Invader Zim".
by anonymous April 20, 2005
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A show about an Irken invader sent to "The end of the universe" Earth on a secret mission ment to get rid of him he does his "best" to conquer Earth but paranormal enthusiest Dib stands in his way

OMFG I love this show it is like my second fave show (next to HTF)
FUCK Nick right up their ass for cancelling it!

I luv Invader Zim ;)
by Flippydaslasher November 24, 2007
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the BEST cartoon i have ever seen. its hilarious. ZIM is an alien from the planet irk who wishes to participate in the taking over the galaxy, so he is assigned Earth. every irken alien gets a robot servant, however ZIM gets one that was made from a pile of junk, whos name is Gir. gir is very stupidly funny and random. when they get to Earth they make disguises for themsleves- ZIM is some kind of school kid with some kind of mowhawk and Gir is an adorable green dog. their arch enemy is Dib, a boy at school that knows what Zim and Gir are and what they are doing but nobody believes him. the show was GREAT until it was canceled, now i have to watch it on youtube. some people say it was canceled because in one of the eps they hid a picture of Gir covered in blood, but i think its really because of the number of views. they decided it would be a good idea to air the show late at night after most kids go to bed, so even though the show was liked, it wasnt watched.
(after Gir tries to fly ZIM somewhere)

invader ZIM: what happened?! we cant have run out of fuel already!
Gir: i emptied it!
ZIM: emptied it? WHY?
Gir: to make room for the tuna! ( he begins to eat tuna from where the fuel is supposed to be)

ZIM( after almost being rejected to be elected take over earth): but i have invaders blood! it runs through my veins like giant radioactive rubber pants!
by werftbhnj bhghyujik August 11, 2010
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The greatest show ever to be aired on TV
Person 1: Who likes Invader Zim?
All: WE ALL DO!
by Invader Kim May 27, 2010
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A dark styled cartoon original aired on Nickolodeon staring Zim, a loud wreckless alien on a mission to conquer/destroy earth, Dib, a human boy with the mindset to stop Zim, Gir, Zim's disfunctional SIR unit, and Gaz, Dib's dark brooding sister who only cares to be left alone.
Invader Zim is considered by many people the "Jesus Christ" of Cartoons. Created by comic book writer Jhonen Vasques, author of Johnny the Homicidal Maniac, Squee, and Filler Bunner, Invader Zim became the prophet of his dark concepts. Revolutionary in many ways, it challenged the way its viewers looked at the world around them. The show was cancelled for its unpopularity amoung younger audiences and high production costs. The show grew a major cult following after its "crucifixion".
Throughout 2006 the show had an apparent "resurrection" where episodes never before seen on tv were aired, though they were available on DVD releases before-hand.
Even though Invader Zim is gone, he lives on in our hearts.
Invader Zim: My Tallest! Why have you forsaken me?
Dib: It is done...
by Dimn October 18, 2006
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Slang for a bmw or a beamer
In rapper Joyner Lucas’ song: “Zim-Zimma, who got the keys to my motherfucking Beamer?
by BillsMafia89 December 2, 2020
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An extreamly awesome and funny little green alien that used to air on nick until some faggots took him off.
Invader zim is an aweome little dude. All who hates him has no life.
by v9earthshine May 26, 2009
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