Dedicated Irken soldier Zim is sent on a secret mission to Earth, where he disguises himself as an elementary-school student and gathers information about human beings. His plan is moving smoothly unt…

After another day at the Earth skool, Ms. Bitters reminds the children that it’s Parent Teacher Night and that all the parents must come to the skool at the end of the day. Zim becomes worried becaus…

Zim goes on an outing to the downtown area in order to test a new guidance chip he installed in GIR, but when GIR removes the chip before leaving in order to store a cupcake, Zim and GIR are left lost…

When Zim makes a huge scene over his inability to eat lunch food, he overhears one of the girls at school talking about how inhuman he seems to be and how he has no friends. In an attempt to appear mo…

When Dib finally manages to get a picture of Zim without him in his disguise, Zim formulates a plan to shrink himself down into a microscopic size to get into Dib’s body and perform a brain wipe to pr…

After Zim watches an old movie where some invading aliens are defeated by some bacteria, he begins to study germs more. However, when he discovers that such germs truthfully are everywhere, he begins…

When Dib finds out that Zim has no human organs, he attempts to exploit Zim’s ailment of head pigeons to get the skool’s nurse to examine Zim in hopes she will see the truth. However, when Dib blurts…

Zim attempts to test some of the defenses that Earth has by taking his Voot out for a drive to monitor local police units. However, when a bumble bee crashes into his vehicle, Zim comes crashing down…

When it begins to rain one day, Zim becomes worried because he’s never experienced rain before. Dib takes notice of his fear and he coaxes Zim into stepping into the rain, only to discover that the I…

Ms. Bitters is assigning students their mentors for Career Day through the use of an aptitude test and a machine. Both Dim and Zim attempt to get their desired professions on the test, in which Dib m…

When Dib finally manages to be permitted to present his findings on Zim to the Swollen Eyeball Network, he believes he will be able to put an end to Zim’s schemes once and for all. However, when he d…

When Zim formulates a plan to get revenge on his skoolmates and especially Dib, he gets them all participating on a fieldtrip. Dib, however, realizes that the driver of the bus isn’t real, but due to…

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 board of directors. When the hamster arrives, all the children love the hamster b…

When Zim’s headquarters are having security problems, Zim attempts to upgrade the security system and get the job over with. He decides to put Gir in charge of ensuring nothing goes wrong while he re…

Zim finally finishes one of his self proclaimed brilliant inventions, a space-time-object-transfer device, in which he plans to send a giant robot into the past in order to put an end to Dib once and …

Zim is upset because all of the other Invaders are doing much better in their tasks than he is, though he inadvertently discovers that his signal to the data hub has been interrupted. When Zim takes …

When Zim comes home from a lousy day at skool because he found out that Dib knows a flaw in his security system, Gir attempts to cheer him up by rubbing bacon oil all over his face. However, when Zim…

When Zim’s Voot Cruiser has a mechanical failure and it sends Zim and Gir flying through the skies, Zim manages to gain control just in time to land safely in their headquarters. However, Zim is high…

Dib believes he has figured out a way to successfully tunnel into Zim’s underground base, but when his father comes in and announces that it’s the Membrane family’s night out and that Gaz gets to pick…

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, in which the bologna fuses with Zim’s skin, causing him immense pain. Zim vows t…

When Gaz sees an advertisement for the new handheld gaming console, the Game Slave 2, she decides that she really needs to go to the mall in order to get one. However, when her father insists that she…

It’s Halloween and the entire town is getting into the Halloween spirit; much to Zim’s dismay because he considers the entire concept to be insane and he doesn’t want filthy Earth children coming to h…

When Mysterious Mysteries is having trouble in ratings due to their lack of stories, they decide to take drastic measures and they finally let Dib onto the show. Dib believes this is his best chance …

Professor Membrane has just unveiled a world changing machine that will completely remove the entire need for fuel, though if the machine were to malfunction, it could cause a giant shockwave that wou…

The skool is holding a candy drive in order to get some finances, in which the individual who sells the most chocolate bars will get a secret mystery prize. Zim becomes interested and he attempts to …

Gir has recently been watching a movie he rented from the local mall, in which Zim just happens to be in the room when the FBI Warning is displayed on screen. Just as Zim realizes this, he gets a pho…

When Zim goes to Mars to attempt to find a way to destroy the Earth, figuring that whatever killed the life on Mars may work for Earth as well, he stumbles across the face on Mars, which he later disc…

When Zim is attempting to explain to the Almighty Tallest that the humans are both dumb and tall, he gets interrupted when the doorbell rings and his transmission to the Tallest is cut short. The two…

When Professor Membrane invites some of his colleagues over to the house, they insult and mock Dib because of his hobby of paranormal investigation. Matters become even worse for Dib when Mysterious …

The Almighty tallest are examining a storage planet in order to send valuable goods to the Invaders to help them on their missions. They decide to send a Megadoomer Combat Stealth Mech to Invader Tenn…

When at skool one day, a child comes into class late because his head was itchy, which Ms. Bitters recognizes that it was due to lice. Before she can do anything, however, the lice infect the rest of …

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 to increase the power on Gir’s behavioral modifier, which will permit him to stay …

While at school one day, Zim throws another fit about the lunch food so Dib throws a muffin at him, which causes Zim to run away in anger. The next day, a pair of Meekrob come to Dib in his sleep and…

When Zim’s constant requests to the Tallest get on their nerves, they attempt to remind him that he is an Invader, not a battle soldier, and that he doesn’t have the training to use the equipment he r…

During Probing Day, the day where the Tallest evaluate the Invaders’ performances, Zim has Dib captured in a space-time-field prison which is keeping him in slow motion, in which Zim wants to perform …

Zim's Yuletide plan to overtake Earth by posing as Santa starts to backfire when he takes on characteristics of the Jolly Old Elf. Dib, meanwhile, tries to save the population from impending doom.

Dib interferes majorly with Zim's plan to bring the Almighty Tallest to Earth just as he's preparing to bring about the downfall of the human race with mind-sucking parasites.

Dib summons Mortos der Soulstealer, a mystical being who emerges once every thousand years, in order to wish for him to steal ZIM’s soul. However, when it turns out that Mortos needs to recharge his …

When Dib finally manages to get a spy camera inside Zim’s house, he plans to exploit the moment to show the Swollen Eyeball Network the truth about Zim’s nature. Unfortunately for Dib, Zim is more co…

When a girl named Moofy comes to Zim’s house and attempts to sell him cookies, he freaks out and sends a robot gopher to get rid of her. However, when Moofy falls into a hole, the story breaks out an…

When Dib discovers that Tak’s ship he recovered has a built in AI, he decides to reprogram the ship with his own personality. While Dib is quite pleased with initial results, the spaceship begins to …

Dib talks to a counselor about his belief that Zim is an alien.

Class elections find Zim running against a Dib-backed Willy for president.

Gaz develops an unhealthy fondness for the flavor of pork.

Zim's former boss is mad at him for leaving, so he kidnaps him and makes him work at his old job on the planet Foodcourtia.