Dedicated Irken soldier Zim is sent on a secret mission to Earth, where he disguises himself as an elementary-school ...

After another day at the Earth skool, Ms. Bitters reminds the children that it’s Parent Teacher Night and that all th...

Zim goes on an outing to the downtown area in order to test a new guidance chip he installed in GIR, but when GIR rem...

When Zim makes a huge scene over his inability to eat lunch food, he overhears one of the girls at school talking abo...

When Dib finally manages to get a picture of Zim without him in his disguise, Zim formulates a plan to shrink himself...

After Zim watches an old movie where some invading aliens are defeated by some bacteria, he begins to study germs mor...

When Dib finds out that Zim has no human organs, he attempts to exploit Zim’s ailment of head pigeons to get the skoo...

Zim attempts to test some of the defenses that Earth has by taking his Voot out for a drive to monitor local police u...

When it begins to rain one day, Zim becomes worried because he’s never experienced rain before. Dib takes notice of ...

Ms. Bitters is assigning students their mentors for Career Day through the use of an aptitude test and a machine. Bo...

When Dib finally manages to be permitted to present his findings on Zim to the Swollen Eyeball Network, he believes h...

When Zim formulates a plan to get revenge on his skoolmates and especially Dib, he gets them all participating on a f...

While at skool one day, Ms. Bitters tells the class that they need a new pet hamster due to the orders of the skool’s...

When Zim’s headquarters are having security problems, Zim attempts to upgrade the security system and get the job ove...

Zim finally finishes one of his self proclaimed brilliant inventions, a space-time-object-transfer device, in which h...

Zim is upset because all of the other Invaders are doing much better in their tasks than he is, though he inadvertent...

When Zim comes home from a lousy day at skool because he found out that Dib knows a flaw in his security system, Gir ...

When Zim’s Voot Cruiser has a mechanical failure and it sends Zim and Gir flying through the skies, Zim manages to ga...

Dib believes he has figured out a way to successfully tunnel into Zim’s underground base, but when his father comes i...

When Dib once again notices that Zim isn’t eating his food, he throws a piece of bologna at him in order to taunt him...

When Gaz sees an advertisement for the new handheld gaming console, the Game Slave 2, she decides that she really nee...

It’s Halloween and the entire town is getting into the Halloween spirit; much to Zim’s dismay because he considers th...

When Mysterious Mysteries is having trouble in ratings due to their lack of stories, they decide to take drastic meas...

Professor Membrane has just unveiled a world changing machine that will completely remove the entire need for fuel, t...

The skool is holding a candy drive in order to get some finances, in which the individual who sells the most chocolat...

Gir has recently been watching a movie he rented from the local mall, in which Zim just happens to be in the room whe...

When Zim goes to Mars to attempt to find a way to destroy the Earth, figuring that whatever killed the life on Mars m...

When Zim is attempting to explain to the Almighty Tallest that the humans are both dumb and tall, he gets interrupted...

When Professor Membrane invites some of his colleagues over to the house, they insult and mock Dib because of his hob...

The Almighty tallest are examining a storage planet in order to send valuable goods to the Invaders to help them on t...

When at skool one day, a child comes into class late because his head was itchy, which Ms. Bitters recognizes that it...

An Irken masquerades as the new girl at school in order to settle an old score with Zim.

When Zim attempts to taint the Earth’s cow-meat supply with sewer water is ruined because of Gir’s antics, he decides...

While at school one day, Zim throws another fit about the lunch food so Dib throws a muffin at him, which causes Zim ...

When Zim’s constant requests to the Tallest get on their nerves, they attempt to remind him that he is an Invader, no...

During Probing Day, the day where the Tallest evaluate the Invaders’ performances, Zim has Dib captured in a space-ti...