| Number
| Name
| Synopsis
| Screenshot
|
| 01
| The Nightmare Begins
| Hoping to never see him again, The Almighty Tallest send Zim on a "mission" to far off Earth
| 
|
| 02A
| Bestest Friend
| Zim adopts an annoying best friend in order to appear more human.
| 
|
| 04B
| NanoZIM
| Dib sneaks into Zim's base, taking pictures and putting them on a floppy disk. Hoping to erase Dib's memory of where he hid the disk, Zim surreptitiously enters Dib's body to erase this memory.
| 
|
| 03A
| Parent Teacher Night
| Zim makes use of his robot parents at the school's parent-teacher conferences.
| 
|
| 03B
| Walk of Doom
| Zim updates GIR's guidance chip, which he tests out in the big city. Unfortuantely, GIR has removed the chip, leaving the duo stranded.
| 
|
| 04A
| Germs
| After watching a B-war movie, Zim becomes germaphobic and dedicates his life to exterminating Earth's bacteria.
| 
|
| 02B
| Dark Harvest
| Zim harvests the organs of the school children to appear more human.
| 
|
| 05A
| Attack of the Saucer Morons
| A group of true believers steals Zim's ship and, after catching Zim trying to recover it, begin to worship him.
| 
|
| 05B
| The Wettening
| Zim searches for a water-proof paste to shade his water allergies so he can survive a water war with Dib
| 
|
| 06A
| Career Day
| It's career day at school and Dib has been paired with a paranormal investigator. However, after discovering Zim is molting due to an equinox, Dib tries to convince his mentor to help him destroy Zim forever.
| 
|
| 06B
| Battle-Dib
| Trying to get a permission slip signed, Dib must endure trials to gain access to his father.
| 
|
| 07A
| Planet Jackers
| Zim attempts to stop two planet thieves who intend to burn the Earth in their sun for fuel, therefore ending his mission.
| 
|
| 07B
| Rise of the Zitboy
| Zim uses his hypnotic pimple to force Dib into revealing a weakness in Zim's base.
| 
|
| 08A
| Invasion of the Idiot Dog Brain
| GIR's brain takes over the base's operating system, and uses it to travel to the local taco resturaunt.
| 
|
| 08B
| Bad, Bad Rubber Piggy
| Zim sends a series of rubber piggies back into the past to stop Dib from meddling with his plans in the future, but the piggies end up causing trouble for Zim.
| 
|
| 09A
| A Room with a Moose
| Zim hijacks a school bus and sends it into a wormhole, at the end of which lies a very large moose.
| 
|
| 09B
| Hamstergeddon
| Zim turns the class pet into a Godzilla-like creature in order to kill everyone in the city, but must team up with Dib when the giant hamster attacks his base.
| 
|
| 10A
| Plague of Babies
| Zim discovers that aliens who look like babies are living on Earth. When they decide to take Zim's ship to return to their homeworld, Zim must fend off the attack of "Giganto-Baby."
| 
|
| 10B
| Bloaty's Pizza Hog
| After Dib is kidnapped by Zim, Gaz goes to save him in time for family dinner at her favorite restaurant.
| 
|
| 11A
| Door to Door
| Zim utilizes virtual torture and destruction in order to sell candy bars for the school fund raiser.
| 
|
| 11B
| FBI Warning of Doom
| Zim sees an FBI warning on a rented video and fears that his mission is threatened unless he returns the video immediately. At the mall, he faces the head of mall security.
| 
|
| 12A
| Bolognius Maximus
| Zim infects Dib with a virus that gradually turns him into meat. Dib manages to infect Zim with his own virus so they must work together to find the cure.
| 
|
| 12B
| Game Slave 2
| Gaz is on the trail of a video game fan who took the game console that was rightfully hers.
| 
|
| 13
| Battle of the Planets
| Zim and Dib discover that two of the planets in the solar system are actually spacecraft created by alien civilizations, and use them to battle each other.
| 
|
| 14
| Halloween Spectacular of Spooky Doom
| As a result of experiments done by Dib, Zim and Dib are trapped in an alternate universe where the only escape is through Dib's head.
| 
|
| 15A
| Mysterious Mysteries
| Dib goes on the TV show Mysterious Mysteries to tell the world the story of Zim. To Dib's surprise, Zim, GIR, and Gaz also appear on the show also to tell their sides of the story.
| 
|
| 15B
| Future Dib
| Zim uses a robot Dib to capture the real Dib while he attempts to destroy the earth.
| 
|
| 16A
| Hobo 13
| Zim is sent to training planet Hobo 13 by The Tallest to take a series of tests and prove he is worthy of new equipment.
| 
|
| 16B
| Walk for Your Lives
| Zim causes a very slow explosion and must put it out before it destroys the city and his base. Originally intended to air alongside Hobo 13.
| 
|
| 17A
| Megadoomer
| Zim is accidentally shipped a high-powered robot with a cloaking device and he immediately heads off to kill Dib with it.
| 
|
| 17B
| Lice
| A lice hunter comes to the school to investigate an outbreak of headlice. She soon discovers that the only one who is immune to the infestation is Zim.
| 
|
| 18A
| Abducted
| Zim and GIR are abducted by aliens as human and dog specimens. Escaping isn't difficult, as the aliens have only managed to stop one specimen from escaping in the past.
| 
|
| 18B
| The Sad, Sad Tale of Chickenfoot
| Dib sets out to disprove the legend of the Chickenfoot, who is actually a man stuck inside a chicken costume.
| 
|
| 19A
| GIR Goes Crazy and Stuff
| Zim adjusts GIR's behavior but things go wrong when GIR sees Zim as a threat to their mission on Earth.
| 
|
| 19B
| Dib's Wonderful Life of Doom
| Zim simulates Dib's entire life to find out whether or not he threw a muffin at Zim.
| 
|
| 20
| TAK: The Hideous New Girl
| A pretty new girl, Tak, joins the class and is instantly beloved by all the other children. Zim thinks she's in love with him until she reveals that she's Irken and has come to destroy Earth to impress the Tallest and take his mission. Intended to be the season finale, it was aired out of order.
| 
|
| Number
| Name
| Synopsis
| Screenshot
|
| 21
| Backseat Drivers From Beyond the Stars
| Dib tries to stop Zim from bringing The Tallest to Earth while The Tallest themselves have to deal with the resistance against Operation Impending Doom 2. Originally intended to be the season 2 premiere, it was long delayed until 2006.
| 
|
| 22A
| Mortos Der Soulstealer
| Dib summons a mystical beast to attack Zim, but the beast is easily distracted.
| 
|
| 22B
| Zim Eats Waffles
| Dib manages to get a spy cam into Zim's base, but all he manages to show anyone is Zim eating Gir's waffles.
| 
|
| 23A
| The Girl Who Cried Gnome
| A girl gets stuck in Zim's yard, attracting unwanted attention from neighbors, the press and the Earth president.
| 
|
| 23B
| Dibship Rising
| Dib downloads his personality into Tak's ship, but the ship soon thinks that he is the real Dib, then Zim reminds the ship that he is Irken and attempts to throw Dib into the city sewage plant.
| 
|
| 24A
| Vindicated!
| Dib believes that someone finally believes him when he says Zim's an alien.
| 
|
| 24B
| The Voting of the Doomed
| Dib has to stop Zim from winning the school election.
| 
|
| 25
| Gaz, Taster of Pork
| Dib uses an ancient spell drive to cast a spell on Gaz that makes her constantly taste pork.
| 
|
| 26
| The Frycook What Came from All That Space
| Zim's former master from Foodcourtia arrives on Earth to take him back to his sentence of hard labor
| 
|
| 27A
| Roboparents Gone Wild
| Zim's Roboparents become aggressive parental figures. Zim is deemed "naughty" and is cast out of the house. The Roboparents take in an escaped zoo monster named Dinky as their new son, and Zim must team up with a hobo to reclaim his base.
| 
|
| 27B
| Simon Sez Doom
| Mr. Elliot, Gaz's teacher, is running an orphanage care program. Zim agrees willingly to help out, which puzzles Dib. Dib immediately expects Zim to have some deeper motive, and decides to thwart whatever plan Zim's coming up with. Zim learns of the kids' game "Simon Says" while working with the orphans, and starts using the game for evil. His last command is "Simon says destroy everything!" Dib goes off to stop the raging kids. As it turns out, Zim really has his sights set on an "atomic diaper-changing machine". He plans to make it explode! Dib now has to either stop Zim or the raging orphans, and in his confusion, Mr. Elliot gives him detention for not watching the diaper machine. In the end, it turns out that Zim's plan all along was to confuse Dib into getting detention.
|
|
| 28A
| Invader Poonchy
| Zim attempts to distract Dib from him by making it seem as though their classmate Poonchy is also an Irken Invader.
|
|
| 28B
| Nubs of Doom
| Zim and Gir are disguised as clowns, and Gir starts going crazy and ruins the disguise. Disgusted by Gir's continuous failures, Zim decides to create a new assistant, employing Vortian weaponry obtained through Prisoner 777. Zim creates his new assistant/sidekick, a purple floating moose-creature which he dubs 'Minimoose'. After testing, he brings Minimoose into the field to battle Dib, only to realise in horror that he hasn't tested the weaponry, and he can't figure out how to use it. He goes home, declaring minimoose a failure. He hands Minimoose to Gir who pulls on his 'nubs' (legs) activating his weaponry and destroying Zim's base.
|
|
| 29
| The Most Horrible X-mas Ever
| A snowman in the future tells children the story of Zim (referred to as "Zam") and Dib ("Doob")'s battle at Christmas. After the series was canceled, this episode was planned to act as the series finale.
| 
|
| 30
| Top of the Line
| The Almighty Tallest hold a contest to find the greatest SIR unit, and Gir makes it into the finalists. Tak was scheduled to appear as the main villain, sabotaging the SIR units. The final script for this episode has not yet been recovered from Nickelodeon, though it was completed.
|
|
| 31A
| The Return of Keef
| Dib is in the school yard watching a child whom he thinks is a werewolf. Zim then appears and splashes Dib with a liquid that makes anyone happy explode. Not being incredibly happy (having just been drenched in goo) Dib's head does not explode, and Zim walks off. Keef then shows up and compliments Dib on his friendship with Zim, and finding out they are not friends, tries to bring them together. Fed up with Keef, Zim formulate a plan to get rid of him. They invite him to a restaurant and splash him with the happy-exploding juice. They then hug to make Keef really happy and he explodes, before reforming and fainting, with Zim commenting he'll be out cold for a few weeks.
|
|
| 31B
| GIR's Big Day
| GIR is captured by some scientists for experimentation. A script for this episode was never completed/written.
|
|
| 32A
| Mopiness of Doom
| Dib gives up on the paranormal to study real science like his father. Zim becomes bored with no arch nemesis, and Dib is unhappy with his new life. The two realise how much they need each other and promise to keep fighting till the end.
|
|
| 32B
| Those!
| Zim attempts to take over the world with giant ants. A script for this episode was never completed/written. The title of this episode is a reference to Them!.
|
|
| 33A
| Night of the Living Vacuum
|
When Zim needs Irkin weapons of mass destruction to desrtoy Dib, The Almighty Tallest send him an Irkin Galatic Vacuum gone haywire. Zim is happy with his "Top Secret" weaponry, but that won't prepare him for the dangers of the vacuum.
- NOTE: this episode was a fan script.
| File:No Screen Shot.png
|
| 33B
| Mission: Nearly Impossible
|
When Zim needs more power for his ray gun, Zim, Gir, Minimoose and Invader Skoodge break into the city Power Plant to try and steal all the power.
- NOTE: this episode was a fan script.
| File:No Screen Shot.png
|
| 34
| The Trial
| Zim is put on trial by the Almighty Tallest for everything he's done to Irk in his life.
|
|
| 35A
| Day of Da Spookies
| Dib is in class, giving a presentation on slug people, when he is horribly mocked by Zim and the other students. In a fit of rage, Dib tells the class everything he knows about Irkens. They don't notice, but the information shocks Zim, and he is clearly afraid of how much Dib knows. Back at his base, Zim plans to ridicule Dib in front of the entire parascience community, in hopes of having him give up on paranormal investigation. Invader Skoodge then reveals that, since Blorch (and presumably Hobo 13), he has been living in Zim's basement. Infuriated by Skoodge's success, he refuses help and goes off with Gir and Minimoose. Their first plan (knocking on Dib's front door and declaring themselves to be 'bigfeets') fails, and they return to the base to plan another one. They make a set of ghost suits and leave again. In Dib's room, they cause chaos until he agrees to call up Mysterious Mysteries and have them appear on live TV. Mysterious Mysteries first sends in a specialist to confirm that they really are ghosts. As this could ruin their plan, Zim gets Gir and Minimoose to attack the specialist and launch him into space, before replacing him with Skoodge.Skoodge then tests the three with various trials, such as their dancing abilities, before declaring them aliens. The news crews then arrive, at which point Minimoose and Gir cast off their disguises to reveal their true forms. Zim tries to, but the suit malfunctions and keeps him in costume. Thinking that Zim is a real ghost, the Mysteries group grab Zim and carry him away to be tested. They then place Dib in a bucket of rats for lying about there being three ghosts.
|
|
| 35B
| 10 Minutes of Doom
| Zim is in the schoolyard, walking home, when Torque throws a ball at him. This dislodges his Pak, which Dib quickly runs off with. Zim then tries to get it back, pursuing Dib, as it is revealed that an Invader can only survive 10 minutes without the Pak before dying. For the whole episode, a countdown is shown in the corner of the screen. Zim locates Dib by asking a 'skool' security guard to help. The security guard then finds Dib by using the tracking devices placed on every student. Dib tries to get to Professor Membrane's lab to have him experiment on the Pak, with Zim chasing after him. Dib tricks Torque into attacking Zim, telling him that Zim called him a dookie-weenie. The three of them chase but eventually lose each other, with Dib escaping on a bus and Zim hiding from Torque in a sumo-wrestler's fat.At this point, Zim's Pak has attached itself to Dib as a new host, which begins to make Dib more like Zim. The two of them race to Membrane's lab, with Zim tricking Gaz into letting him ride on the back of her motorcycle (by stealing her Game-Slave and telling her Dib did it).Eventually they arrive, Membrane removes the Pak, and it is then taken by Zim, who places it back on himself at the last second. Jhonen Vasquez planned for Zim to actually die in this episode due to the series' upcoming cancellation, finding it to be a convenient end, but Nickelodeon didn't allow it in case they decided to bring the show back.
|
|
| 36A
| It Feeds on Noodles
| Zim becomes a vampire that must feed on Chinese food, with chopsticks for fangs. A script for this episode was never completed/written.
|
|
| 36B
| Pants! (AKA When Pants Ruled!)
| Zim becomes a vampire that must feed on Chinese food, with chopsticks for fangs. A script for this episode was never completed/written.
|
|
| 37A
| TBA
| Dib robs GIR and turns him into his own robot assistant. This episode had no plot but Jhonen Vasquez said that this episode was for an upcoming episode. This episode and the next episode did not have their titles because thus, they are missing.
|
|
| 37B
| TBA
| ZIM shrinks Invader Skoodge so that he will infiltrate Dib's house. This episode had no plot but Jhonen Vasquez said that this episode was for an upcoming episode. This episode and the previous episode did not have their titles because thus, they are missing.
|
|
| 38
| Squishy: Hugger of Worlds
| An enormous creature called Squishy that destroys planets by hugging them finds Earth. A script for this episode was to be co written by Rosearik Rikki Simons, but was never completed.
|
|
| 39
| "Untitled Season Finale (1)"
| Part 1 of a 2-part season finale. Meekrob discover Invader Tenn, and hold her hostage. The Tallest must rescue her. All the Invaders must help, actually. Except Zim. But Skoodge is invited. But the Tallest don't know Skoodge is on Earth with Zim, and Skoodge would get in trouble. So Zim goes, and causes a war to begin.
|
|
| 40
| "Untitled Season Finale (2)"
| Part 2 of a 2-part season finale. The war has begun. Other races of aliens begin to fight against the Irkens, including the Resisty from Backseat Drivers from Beyond the Stars. Dib wonders about Zim being gone, and begins to explore his base and finds out about the war. Skoodge frees Tenn. They escape, and Zim is left. Dib arrives (probably by using the Dib Ship), and begins to fight against the Irkens as well. Dib is named ambassador for Meekrob, and Zim is doomed.
|
|
| TBA
| Invader Dib
| This was the 3-part episode that was to wrap the series up. Dib, under the control of the evil Meekrob, attempts to kill all living Irkens. In a rush to stop him, ZIM makes a tactical blunder [aka Dib saying "Hey, look over there!"] and is sent into an asteroid. He dreams that all Irken life dies, but awakens in front of a hooded figure who tells him to fight. ZIM defeats Dib, and Dib is put into an Irken facility to save his mind. The hooded figure, who is really Gaz, blows up a detonation device, and ZIM becomes tallest. GIR? He watches it on the local news with Minimoose. Although it cannot be verified, it is said that Dib, horribly scarred, became ZIM's tool of experimentation for warship weapon systems.
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