List of Invader Zim episodes

This is a list of episodes for Nickelodeon's animated television series Invader Zim. The list is comprised of a pilot episode, 27 completed episodes and at least seven episodes that were in production at the time of the series' cancellation. The series premiered on March 30 2001, and as of August 19, 2007, all 27 episodes have been aired in all territories and released on DVD. Nineteen of the episodes are split into two individual stories, each lasting around twelve minutes. There are eight "double length" episodes, and this list is ordered by broadcast date with production code noted.

All episodes were directed by Steve Ressel; the only exception is the unaired pilot episode which was directed by Jordan Reichek.

Season one

Season One of Invader Zim was first aired on Nickelodeon from 2001 to 2002.

Title	Writer(s)	Airdate	Prod. #
"Pilot"	Rob Hummel, Ed Scharlach, Jhonen Vasquez & Eva Almos	Unaired, made in 1999	00
Zim finds that he is severely allergic to the school cafeteria's beans, and Dib uses this fact to try to prove to the other children that Zim is an alien. Zim and Dib battle in a futuristic food fight in the school cafeteria. Billy West was the voice of Zim for this episode only. Richard Horvitz was chosen for the series role after the pilot was shown to Nickelodeon because West's voice was too recognizable from Futurama, according to Invader Zim creator Jhonen Vasquez's DVD commentary.
"The Nightmare Begins"	Jhonen Vasquez & Rob Hummel	2001-03-30	01
The Irken race is having a great assigning for Operation Impending Doom II, where all Invaders are assigned a planet to conquer. Zim is not invited, yet turns up anyway. Hoping to never deal with him again, The Almighty Tallest send Zim on a "mission" to a far-off "mystery planet": Earth. After arriving on Earth, Zim attempts to fit in and fools everyone except his schoolmate Dib, who vows to catch Zim.
"Parent Teacher Night"	Jhonen Vasquez & Rob Hummel	2001-04-06	03A
The parent teacher night is approaching and Zim is confronted with the fact that he doesn't have any biological parents. He makes use of his robot parents to attempt to fool the students, teachers and parents. Despite the robotic parents malfunctioning during the evening, nobody finds out that they are fake and Zim is an alien.
"Walk of Doom"	Jhonen Vasquez & Rob Hummel	2001-04-06	03B
Zim updates GIR's guidance chip, which he plans to test out in the city. Unfortunately, GIR removed the chip before leaving the house - to make room for a cupcake - leaving the duo lost in the sprawling metropolis. Lost in the city, Zim attempts to use public transport to return home but fails. Their plight is made worse when Zim is mistaken for a bank robber, and the police are after him; at the end, they somehow end up in Mexico.
"Bestest Friend"	Rob Hummel, Roman Dirge, & Jhonen Vasquez	2001-04-13	02A
Zim notices that all the other children in the school have friends, yet he has not. He decides that as he doesn't want to appear strange, he must also have a friend. Zim chooses an annoying classmate to be his best friend and once people have acknowledged that Zim has a friend, he ditches him. The friend however does not take a hint and so Zim must take scientific measures to get rid of him.
"NanoZIM"	Jhonen Vasquez & Rob Hummel	2001-04-13	04B
Dib sneaks into Zim's base, takes incriminating pictures, and puts them on a floppy disk. Zim discovers Dib and shrinks to microscopic size to enter Dib's body. Zim accesses Dib's Arm Control Nerve and makes him crush the floppy disk, but Dib reveals he has a copy. Zim travels to Dib's brain to wipe the memory of where the disk copy is hidden.
"Germs"	Jhonen Vasquez & Rob Hummel	2001-04-20	04A
Zim sees a B-movie reminiscent of War of the Worlds where an alien race is thwarted by common germs. Zim quickly becomes acutely germophobic and dedicates himself to exterminating all of the Earth's bacteria. After running out of germ spray he heads out to buy more, but discovers that he can protect himself from germs using a resistant hamburger meat made of napkins.
"Dark Harvest"	Eric Trueheart & Rob Hummel	2001-04-20	02B
Zim is in class at school when a pigeon lands on his head. He is then sent to the nurse for "pidgeon head". He starts to believe that because of his anatomy, he won't pass for human and the nurse will discover that he is an alien. To avoid this, Zim harvests the organs of various skool children in order to pass the medical examination. Dib, who realises that Zim has been out of class for a long time goes to find Zim. He discovers what Zim is doing and attempts to stop him.
"Attack of the Saucer Morons"	Jhonen Vasquez & Eric Trueheart	2001-04-27	05A
Zim's spaceship is sent spiraling out of control after an encounter with a bee and it crashlands into a park. A UFO-obsessed group finds Zim's ship and so Zim attempts to recover it. Zim is captured by the group once his disguise falls apart (Wig,Fake eyes), and they begin to worship him as a prophesised extraterrestrial savior. Eventually, Zim gets in contact with GIR who is able to rescue Zim and recover the spaceship
"The Wettening"	Roman Dirge, Eric Trueheart, & Rob Hummel	2001-04-27	05B
It is raining after a school day, and Zim discovers that water has a harmful effect on his alien skin. Dib also learns this and over the weekend he constructs an automatic water bomb firing weapon. Zim realises he must defend himself and he discovers that paste protects his skin from the harmful effects of water. On Monday morning, Dib turns up at school with his weapon but Zim is nowhere to be found. Zim is in fact in space with his own water bomb weapon. The device sucks up all the water from the planet and puts it into a water bomb of his own, which he subsequently drops onto Dib.
"Career Day"	Rob Hummel	2001-05-04	06A
It's career day at school and Dib has been paired with a paranormal investigator "Bill" while Zim goes to work at a fast food restaurant called McMeaty's. However, after discovering Zim is moulting due to a planetary equinox, Dib tries to convince his new mentor to help him expose Zim. The expert however is not interested and Dib must trick him into going to the restaurant. "Bill" is distracted and fails to see Zim's moult.
"Battle-Dib"	Jhonen Vasquez & Eric Trueheart	2001-05-04	06B
Dib desires to do a presentation for a meeting of the Swollen Eyeballs, a secret society he is a member of. The society requires that he must have a permission slip signed by his father, Professor Membrane before he can do this though. Professor Membrane has a television show and must must endure various trials (including a parody of the Thunderdome) to gain access to his father. Dib fails the trials, but is successful in getting his father's signature. However he cannot do the presentation as he forgets his files. This is one of three episodes to not feature Zim.
"A Room with a Moose"	Jhonen Vasquez & Rob Hummel	2001-08-17	09A
After being ridiculed and generally treated badly by his schoolmates, Zim decides that he will get rid of them. To do this he tricks the class into thinking they're going on a field trip, but in reality the school bus is heading for an inter dimensional portal, with the end being a room containing a moose. On the bus, Dib discovers Zim's plan and is able to force the bus to enter a portal back to Earth.
"Hamstergeddon"	Eric Trueheart	2001-08-17	09B
Zim's class at school gets a new hamster, and Zim decides that its cuteness can be used as a form of mind control. Zim attaches a device to the hamster which causes it to grow to a huge size and go on a city wide rampage. Though not exactly what Zim planned, he lets this happen because the city is being destroyed anyway. The hamster then starts heading towards Zim's base and fearing destruction of the base and discovery by the humans, Zim uses his alien technology to stop the hamster.
"Invasion of the Idiot Dog Brain"	Jhonen Vasquez & Rob Hummel	2001-08-24	08B
During maintenance of Zim's underground base, GIR's brain is accidentally put into the house's operating system. Zim cannot control GIR and attempts various methods at getting control of the house back. Eventually GIR decides he wants tacos and the house transforms into a dog shape. The house, with Zim inside then travels in full view to the restaurant to collect food. When discovering that he no longer has a mouth to eat the food, GIR lets Zim rectify the situation.
"Bad, Bad Rubber Piggy"	Eric Trueheart	2001-08-24	07B
By using a time portal device, Zim finds that sending a series of rubber piggies back into the past stops Dib from meddling with his plans in the future. With each pig sent back to certain points in time, Dib becomes weaker and weaker. After Zim thinks he has killed Dib in the past, it becomes clear that Dib had been enhanced with a life supporting, super strong exo-skeleton. With each pig that Zim now sends back Dib only gets more powerful. To stop this from happening, Zim sends a pig back to himself with the message not to use the portal device.
"Planet Jackers"	Rob Hummel & Jhonen Vasquez	2001-08-31	07A
The Earth's gravity starts to fluctuate and Zim attempts to find out why. He discovers that the planet is being stolen by two thieves who intend on using the Earth as fuel for their dying sun. After failing to persuade them to leave the planet for his conquest, Zim goes about stealing the planet back and eventually being successful. The citizens of Earth have no idea what was happening.
"Rise of the Zitboy"	Frank Conniff & Roman Dirge	2001-08-31	08A
Zim reacts to being covered in grease by getting a zit. After the Zit grows he discovers that its motion has hypnotic powers. Zim uses this hypnotic pimple to gain control of the school children, and then forces Dib into revealing a weakness in Zim's base defenses. At that point the pimple grows even further and explodes; Zim then leaves to reinforce his base's defences to remove the weakness, while Dib is forced to clean up the mess.
"Plague of Babies"	Rob Hummel	2001-09-07	10A
Zim and GIR return from a mission, but Zim fears that he has been seen out of disguise by a human baby. He then 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 fends off their attack and strands them on Earth forever.
"Bloaty's Pizza Hog"	Jhonen Vasquez & Rob Hummel	2001-09-07	10B
Dib is kidnapped by Zim and taken to a station orbiting Earth for experimentation. Gaz is forced to go to save him so as to be in time for a rare family dinner at her favorite restaurant. Gaz uses Zim's spaceships to return Dib back to Earth where they crash land into the restaurant.
"Bolognius Maximus"	Jhonen Vasquez	2001-09-21	12A
Dib throws bologna during the lunchbreak at school, which then hurts Zim's skin, so as revenge Zim places a thumbtack on Dib's chair, which he then sits on. The next day Dib discovers that he smells like meat and is ridiculed by the other children, and at that point Zim informs Dib that his vengeance is complete. Dib discovers that Zim has infected him with a virus that is altering his DNA into that of balogna. As revenge he infects Zim with the same virus and as they start turning into sausages, they both work together to try and find a cure, but fail and hide in Zims house.
"Game Slave 2"	Eric Trueheart & Jhonen Vasquez	2001-09-21	12B
Gaz is in line for a newly released hand-held games console when the person behind her tricks the salesperson into giving the final console to him. Gaz is on the trail of this video game fan boy and pursues him to his home where she removes the batteries. Desperate for batteries so he can save his game, the boy heads to the shopping mall. While in the elevator Gaz scares him into handing over the console. She then puts some batteries into it and continues playing. This episode is one of three episodes not to feature Zim.
"Halloween Spectacular of Spooky Doom"	Jhonen Vasquez & Rob Hummel	2001-10-26	16
Dib is doing experiments with is father's equipment until it goes wrong. Dib now starts passing too and from an alternate dimension where everything is evil. He manages to force Zim to come into the dimension with him. It is revealed that Dib's brain is the only portal out of the dimension and all the evil creatures within it want to go through it. Zim saves Dib so that he can get through the portal but he then leaves Dib to the monsters. The monsters have a look through the portal but turn back as they are disgusted by the sight of Halloween and GIR eating candy.
"Mysterious Mysteries"	Courtney Lilly & Rob Hummel	2002-03-22	14A
Dib goes on the TV show Mysterious Mysteries to tell the world the story of Zim and to share a video of Zim he had filmed. To Dib's surprise, Zim, GIR, and Gaz also appear on the show to tell their sides of the story. They each tell their own version story, which is then performed in reconstructions on the show for the benefit of the viewer. The presenter of the show decides that everyone is crazy and tells the viewers that nobody will ever know what truly what happened in the video.
"Future Dib"	Rob Hummel	2002-03-22	15B
Professor Membrane constructs an energy creating device and Zim gets the idea to sabotage it to destroy the world. Dib realises that he must stop Zim but during his preparations he discovers a version of himself who is beaten up and hurt laying in his bed. The version tells Dib that he is from the future and he needs his help to stop Zim as he's too weak. So Dib goes to where future Dib told him to go but it is a trap set by Zim, and the future Dib is in fact a robot controlled by Zim. Dib is stuck in a cage while future Dib goes to the starting of the energy device to destroy it. Gaz is annoyed by Dib and beats him up, preventing him from causing the destruction. She then realises he is a robot after one of its robotic eyes pops out.
"Door to Door"	Eric Trueheart & Courtney Lilly	2002-03-29	11A
The school is having a fund raising door to door candy sale with the promise of a mystery prize for the student who sells the most candy. Intrigued about what the prize could be, Zim attempts to sell as much candy as possible. Initially he fails, but he then utilizes virtual torture and destruction in order and sells a huge quantity of the candy bars. He wins the prize only to find it is nothing and was just a form of motivation to raise funds.
"FBI Warning of Doom"	Frank Conniff & Jhonen Vasquez	2002-03-29	11B
GIR is watching a rented movie and Zim sees the FBI piracy warning on it. The rental store calls to demand that the movie be returned as it is very over due, but Zim fears that his mission is threatened unless he returns the movie immediately. He returns to the mall and breaks in so he can return the disc into the return slot, but mall security discovers him and so he battles through to get the DVD returned.
"Battle of the Planets"	Jhonen Vasquez	2002-04-05	13
Zim is surveying the other planets in the solar system and discovers that Mars has actually been converted into a space vehicle by the previous inhabitants of the planet. Zim decides to use the planet to crush all the lifeforms on Earth, but Dib discovers his plan and attempts to stop him. Dib uses Mercury that has also been converted to a vehicle, and the two use the planets to battle each other in space. Zim, attempting to lose Dib goes into the asteroid belt but completely loses control. Dib, who thinks he's won then realise that GIR had destroyed all his evidence recording equipment. This is the third double-length episode of Invader Zim. This episode was planned to be the first season finale until Nickelodeon ordered seven extra episodes for the season.. This episode was voted one of the Top 5 Best Invader Zim episodes by Toyfare.
"Abducted"	Jhonen Vasquez & Rob Hummel	2002-04-12	14B
Zim and GIR are abducted by two aliens who think of them as human and dog specimens. Zim immediately informs the aliens that he is not human and GIR is not a dog, but they don't believe him as they are stupid. Escaping is not difficult, as the aliens have only managed to stop one specimen from escaping in the past. Zim and GIR escape the aliens and return to the base. The aliens in this episode were previously featured in Jhonen Vasquez' Johnny the Homicidal Maniac and Squee!. Their voices were provided by Brian George and Jim Wise.
"The Sad, Sad Tale of Chickenfoot"	Roman Dirge & Eric Trueheart	2002-04-12	17A
Frustrated at how people see paranormal science, Dib sets out to disprove the urban legend of the Chickenfoot, who is actually a man stuck inside a chicken costume. The zipper on the costume got stuck after a microwave exploded at a chicken restaurant. Dib manages to unstick the zipper and remove the suit, but now people are suggesting that all legends, even ones that Dib believes in, are false. This is one of three episodes not to feature Zim.
"Megadoomer"	Roman Dirge, Eric Trueheart, & Jhonen Vasquez	2002-04-26	19B
Due to an angry prisoner who sorts packages, Zim is accidentally shipped a high-powered robot with a cloaking device and he immediately heads off to destroy Dib with it. The robot does not come with batteries so every few Blocks, the machine has to be plugged into a new power outlet to stay cloaked. What's more is that the robot is cloaked, but Zim inside is not, making him visible for everyone to see. When he gets to Dib's house the cloak fails and he destroys the robot so Dib cannot get any pictures of it.
"Lice"	Rob Hummel	2002-04-26	18A
There is an infestation of headlice at the school and so a lice hunter comes to investigate the fast outbreak. She quarantines the entire school and Dib believes she is crazy, but it is revealed that there is a giant lice queen beneath the school. The lice hunter soon discovers that the only ones who are immune to the infestation is Zim, and uses Zim's immunity to fight the lice queen in a parody of Aliens.
"Tak: The Hideous New Girl"	Jhonen Vasquez & Eric Trueheart	2002-05-10	20
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. Zim and Dib both get into her base to stop her from destroying the world. Zim distracts her in his spaceship while Dib turns off the world destroying machine. GIR and Gaz manage to wreak havoc remotely. Intended to be the season finale, it was aired early.
"GIR Goes Crazy and Stuff"	Eric Trueheart	2002-05-24	17B
Zim is frustrated with how useless GIR is, and puts him in permanent defensive mode. Things start to go wrong when GIR sees Zim himself as a threat to their mission on Earth. GIR escapes to gain more knowledge of the humans so that he can complete the mission, but Zim follows him and manages to put him back into his normal, broken mode.
"Dib's Wonderful Life of Doom"	Jhonen Vasquez & Eric Trueheart	2002-05-24	19A
Zim is hit by a muffin during the school lunchbreak and suspects it is Dib, but he cannot know for sure. That night, in a dream, Dib is visited by aliens and they say they have given him special powers. Dib then uses these powers to capture Zim. Time passes and Dib spends his life solving other mysteries and thwarting aliens. Finally, at a very old age, Dib is being interviewed on TV when he is asked if he threw the muffin at Zim and Dib admits it. At that point it is revealed that Zim had simulated Dib's entire life just to find out whether or not Dib was the one who actually threw the muffin. He then proceeds to throw his own muffin at Dib.
"Hobo 13"	Eric Trueheart & Danielle Koenig	2002-07-12	15A
Zim requests more powerful weapons but the Almighty Tallest do not want to give them to him, so he is sent to the deadly training planet Hobo 13 to prove he is worthy of the new equipment. Zim, through extreme selfishness and sacrifice of his teammates surprisingly gets to the end of the trials. The instructor who is appalled and how Zim has acted, takes Zim on in a fight, but Zim manages to beat him by stealing the power from his exo-skeleton.
"Walk for your Lives"	Eric Trueheart	2002-09-28	18B
Zim is doing time related experiments on Dib, but the experiment explodes. Dib manages to escape but he is "slowed down" and can only move very slowly. Also produced is an explosion, which is also exploding very slowly. Zim decides that the explosion needs to be put into the city cesspit to stop it from exploding and destroying his base. After some frustration and against the advice of GIR and the computer, Zim decides to throw Dib into the explosion to cause it to speed up. The explosion then explodes at normal speed. This episode was originally intended to air alongside Hobo 13.

Season two

The second season of Invader Zim began its run in 2002. Midway through the season the show was cancelled and new episodes were not shown. The remaining finished episodes aired in 2006.

Title	Writer(s)	Airdate	Prod. #
"The Most Horrible X-Mas Ever"	Jhonen Vasquez & Eric Trueheart	2002-12-10	29
In a story told by a snowman about the most horrible Christmas ever, Zim discovers how much people like Santa Claus. He decides to use this in a plan to take over the world by dressing up in a Santa suit that is full of data about Christmas. Dib once again tries to stop Zim, but this time has his father's help due to his dislike of Santa. The Santa suit malfunctions and engulfs Zim, effectively turning him into a real Santa Claus, but not knowing this, Dib still destroys the suit and saves Zim. An un-edited version has Zim being engulfed by the suit and destroying earth as a monster.
"Backseat Drivers from Beyond the Stars"	Jhonen Vasquez	2006-06-10	21
Zim desires to bring his masters, the Almighty Tallest to Earth to witness his next plan for world domination involving a brain parasite, so he remotely controls The masive. However, at the time he takes control, the Tallest are under attack from a resistance group. Dib uses a remote connection of his own to get into Zim's computer and wrestle for control of the Tallest' ship. When the Tallest realize what's going on, they transfer Zim's control over to the Resistance(now officially named the Resisty) so he brings their ship in. The Tallest then contact Zim to punish him for what he has done, only to find that he's under attack from the brain parasite. This episode was supposed to be the Season 2 premiere, but it was delayed until 2006.
"Mortos Der Soulstealer"	Eric Trueheart	2006-06-17	22A
Dib summons a mystical beast called Mortos Der Soulstealer to attack Zim and prevent him from taking over the world. The Mortos will grant Dib anything he wants, but is tired and requests time and food to regenerate. It soon becomes clear that Mortos just wants to have fun and spends time eating and trying on clothes. Dib confronts Zim with Mortos and demands that he fulfill his request to stop Zim, but Mortos grants a random person's request for ice cream instead, and then returns to his realm to rest.
"Zim Eats Waffles"	Eric Trueheart	2006-06-17	25A
Dib has managed to get a spy camera into Zim's base in the hopes of recording some evidence that will prove he's an alien. Unfortunately for Dib, his hard drives aren't working and need to be automatically repaired, so Dib watches Zim while this is happening. It is a quiet day for Zim and he is just eating waffles, but every now and then he reveals part of an evil plan involving cyborgs. Every time this happens Dib tries to contact a member of the Swollen Eyeball to witness it, but by the time they answer, Zim is eating waffles again. Dib's hard drives are finally repaired, but then the cyborgs destroy them.
"The Girl who Cried Gnome"	Rob Hummel	2006-07-15	22B
A girl selling cookies gets her foot trapped in Zim's front yard and it attracts the attention of the neighbors, press and the Earth president. The girl loves all the attention and wont let anyone simply pull her out. Dib manages to persuade the president to use a digging machine to dig under the girl to get her out. He suggests this because then Zim's base will be discovered. Zim finally decides that enough is enough and simply pulls the girl out of the hole.
"Dibship Rising"	Eric Trueheart	2006-07-15	25B
Dib is working on Tak's crashed spaceship, and to stop it from acting so hostile to him he downloads his personality into the ship. This does not go as planned because the ship then starts to believe that it is Dib. Zim discovers what Dib has done and reminds the ship that it is Irken technology and must do what Zim says. Zim commands the ship to throw Dib into the city sewage plant but the ship remembers that it is Dib and is so depressed about it that it deletes its own personality.
"Vindicated!"	Danielle Koenig	2006-07-22	24B
Dib sees the school's counselor, Mr. Dwicky, about his problems at school, and Dib tells him about how Zim's an alien trying to take over the Earth. Surprisingly Mr. Dwicky says he believes him and that he wants to help him out. He later reveals to a colleague that this is just a ruse to get Dib to trust him. They trick Zim into thinking aliens are coming to meet him in the woods to give him super weapons but after a while of waiting, Mr Dwicky reveals he doesn't really believe Dib. At that point some real aliens turn up and offer to take Mr Dwicky with them. As he loved aliens as a child he jumps at the chance and Dib is left behind with nobody else believing him.
"The Voting of the Doomed"	Eric Trueheart	2006-07-22	24A
Zim decides to use the school's election to gain power, so Dib becomes the manager of his opponent to try and stop him. Zim streaks ahead after making many promises to the students that are crazy, but win them over anyway. Dib counters this by using a mind control device on the child who's opposing Zim so he can debate him properly. Dib's candidate wins the election, but the school faculty convert him into a school president who will always do what he's told to and is full of school pride.
"Gaz, Taster of Pork"	Jhonen Vasquez	2006-08-12	26
Dib discovers that his electronic spell drives still have two credits on them, which allow him to cast spells. Not knowing what the spells would do, he casts one on his sister Gaz instead to see what would happen. The result of the spell is that Gaz tastes pigs no matter what she eats, apart from hotdogs. Gaz threatens Dib's life if he doesn't reverse the spell, so he and Gaz go to another dimension to request the spell be undone. Gaz answers three questions correctly and the spell is reversed.
"The Frycook What Came from All That Space"	Jhonen Vasquez	2006-08-19	23
While in school, a mysterious figure kidnaps Zim and takes him into space. It is revealed that this person is an Irken who was previously Zim's jailmaster before he escaped in the first episode. Zim is put to work in a fast food restaurant on a snacking planet called Foodcortia. Zim manages to escape before a massive amount of snacking causes the gravity to prevent anyone leaving the planet for 20 years.

Unfinished episodes

Due to the cancellation of the show mid season, several episodes were not completed and were left at various points in the production process.

Title	Episode Notes	Production Number
Roboparents Gone Wild	Zim's Roboparents become aggressive parental figures, and 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. Voices were recorded for this episode before cancellation. The Hobo is the same one from Gaz, Taster of Pork.	27A
Simon Sez Doom	Mr. Elliot, Gaz's teacher, is running an orphanage care program. Zim joins it so as to take advantage of the game Simon Says and its effects on the orphans. Voices were recorded for this episode before cancellation.	27B
Invader Poonchy	Zim attempts to distract Dib from him by making it seem as though their classmate Poonchy is also an Irken Invader. The plan backfires when Zim himself begins to grow suspicious of this new "invader". Voices were recorded for this episode before cancellation.	28A
Nubs of Doom	The introduction of Minimoose as a new weapon for Zim to replace GIR with. Voices were recorded for this episode before cancellation.	28B
10 Minutes to Doom	Zim's PAK gets disconnected, which gives him only ten minutes of time before he dies without its life support systems; apparently, the episode was to be set in real-time as a "life clock" would have been present throughout the episode. Jhonen Vasquez planned for Zim to actually die in this episode due to the series' upcoming cancellation, finding it to be a convenient series finale, but Nickelodeon did not allow it in case they decided to bring the show back. As such, Zim reclaims his PAK at the final second. Voices were recorded for this episode before cancellation.	30A
GIR's Big Day	GIR is captured by some scientists for experimentation. A script for this episode was never completed/written.	30B
Return of Keef	Keef comes back to be Zim's friend again, but then becomes friends with Dib, then Dib and Zim team up to get rid of him. Voices were recorded for this episode before cancellation.	31A
Day of da Spookies	An episode that was to feature Skoodge in a prominent role. The script for the episode was completed.[1]	31B
Mopiness of Doom	Dib gives up on the paranormal to study real science like his father. Zim becomes bored with no arch nemesis, skips school, and just lies on the couch all day, while that's happening, Dib is unhappy with his new life. The two realise how much they need each other and promise to keep fighting till the end. Voices were recorded for this episode before cancellation.	32A
Those!	Zim attempts to take over the world with giant ants the size of a shoe. A script for this episode was never completed/written. The title of this episode is a reference to Them!.	32B
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.	33
The Trial	Zim is put on trial by the Almighty Tallest for everything he's done to Irk in his life. Several designs of this unfinished episode including Almighty Tallest Miyuki and Almighty Tallest Spork were completed and can be found at [2]	34
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.	35A
Pants! (When Pants Ruled!)	Zim attempts to take over the world with mind-controlling pants. A script for this episode was never completed/written due to the similarity to the title of the first episode of Jimmy Neutron.	35B
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.	36
Night of the Living Vacuum	When The Almighty Tallest denie Zim's request fo Irkin Weapons of Mass Destruction, they decide to send him an Irkin Galtic Vacuum gone haywire. But Zim doesn't know the dangers of the vacuum. The script for this episode was never recovered.
Special Doom Part 1	The unwritten two-part season finale was supposed to deal with Invader Tenn being captured by The Resisty and the rest of the Irken army attempting to save her.	39
Special Doom Part 2		40
Invader Dib	This was intended to be a series finale but the TV-movie, in which Dib leads a war against the Irkens on their home planet of Irk and Dib being stuck on Jupiter in the end, but was never written.

DVD release

Further information: Invader Zim merchandise

All 27 episodes of the completed Invader ZIM were released on DVD, along with the pilot, an alternate cut of The Most Horrible X-mas Ever, and audio from seven of the unfinished episodes.