As of July 2026, Invader ZIM Season 1 aired in 2001 with 36 episodes — streaming now on Paramount Plus. Full episode guide and where to watch below.
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Invader ZIM Season 1

2001 36 Episodes Animation · Comedy ⭐ 9/10

Invader ZIM Season 1 is currently streaming on and , and it delivers exactly the kind of comedy that earns a loyal following. The show says what it needs to say in a single season, no filler. A 9/10 rating says what the writing already makes obvious: this one works. Watch it for Richard Steven Horvitz — stay for everyone else around them. There is no real reason to keep putting it off.

Invader ZIM Season 1 arrived without much fanfare and built its audience the hard way — through word of mouth. Invader ZIM Season 1 does what great comedies rarely manage — it is actually funny, consistently, across the whole run. Season 1 of Invader ZIM includes 36 episodes. It aired from March 2001 to September 2002. This season stars Richard Steven Horvitz, Andy Berman and Rosearik Rikki Simons. Richard Steven Horvitz and Andy Berman lead a cast that brings real weight to the material. It was aired in 2001. The timing in Invader ZIM Season 1 is precise enough that even the throwaway lines land on a second watch. It sustains a level of quality that very few manage to hold onto all the way through.

For viewers who want something light without wanting something stupid, Invader ZIM Season 1 respects your intelligence. If you have run out of similar titles to watch, this is a strong next pick. Short enough to finish in a weekend, substantial enough to feel satisfying. Richard Steven Horvitz's comic timing carries it through its weaker moments. The kind of comedy you recommend to someone who claims they do not watch much.

📡 Where to Watch Invader ZIM Season 1

🇦🇺 Australia
🇺🇸 United States
🇬🇧 United Kingdom
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🎬 Invader ZIM Season 1 — Episode Guide

E1
The Nightmare Begins
2001-03-30
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 until an extraterrestrial-obsessed classmate named Dib takes notice of Zim's green skin and missing ear...
E2
Parent-Teacher Night
2001-04-06
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 because his robotic parents aren’t programmed for such a task yet and he cannot permit them to blow his co...
E3
Walk of Doom
2001-04-06
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 and have to resort to public transport to find their way back. Their journey home is complicated fu...
E4
Bestest Friend
2001-04-13
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 more normal, Zim decides to spend time with a student named Keef, though Zim soon finishes his plan an...
E5
NanoZim
2001-04-13
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 prevent him from remembering where he located the picture. Fortunately for Dib, his father has been w...
E6
Germs
2001-04-20
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 a crusade to kill every germ in his headquarters so that he can be safe, which is helped by the fac...
E7
Dark Harvest
2001-04-20
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 his plan out to Zim, Zim develops a device that will permit him to switch objects for organs, in wh...
E8
Attack of the Saucer Morons
2001-04-27
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 in the park, in which he heads home because he will be unable to recover it the next day. However,...
E9
The Wettening
2001-04-27
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 Irken race has an innate weakness to water, which causes a burning sensation upon impact. Dib decide...
E10
Career Day
2001-05-04
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 manages to get paired with a Paranormal Investigator while Zim gets stuck working at a fast food faci...
E11
Battle-Dib
2001-05-04
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 discovers that he needs his father’s permission and since his father is busy working on his televisio...
E12
A Room with a Moose
2001-08-17
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 his constant theories, the other students disregard his warnings. Zim decides to gloat about his m...
E13
Hamstergeddon
2001-08-17
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 because of how adorable it is, in which Zim decides to exploit that fact since the hamster could help...
E14
Invasion of the Idiot Dog Brain
2001-08-24
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 replaces the computer’s AI, but when Gir begins to mess around with things, he inadvertently causes th...
E15
Bad, Bad Rubber Piggy
2001-08-24
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 for all. However, when the robot isn’t compatible with the temporal field, he throws a rubber pig i...
E16
Planet Jackers
2001-08-31
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 a closer look, he discovers that the Earth has actually been hijacked by the Planet-Jackers, an alie...
E17
Rise of the Zitboy
2001-08-31
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 develops a pimple due to the grease, he fears that he will be considered abnormal and that it will ...
E18
Plague of Babies
2001-09-07
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 highly upset because a human baby saw the whole thing and despite Gir’s attempts to reason with him, Zim...
E19
Bloaty's Pizza Hog
2001-09-07
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 the place to eat, Dib runs off saying that he will be back in time for them to leave. However, whe...
E20
Bolognius Maximus
2001-09-21
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 to get his revenge and during the next day of school, Dib sits on a tack, which causes Zim to begin l...

🎭 Cast of Invader ZIM Season 1

Richard Steven Horvitz
Richard Steven Horvitz
Zim (voice)
Andy Berman
Andy Berman
Dib (voice)
Rosearik Rikki Simons
Rosearik Rikki Simons
GIR (voice)
Melissa Fahn
Melissa Fahn
Gaz (voice)
Lucille Bliss
Lucille Bliss
Ms. Bitters (voice)
Rodger Bumpass
Rodger Bumpass
Professor Membrane (voice)
Kevin McDonald
Kevin McDonald
Almighty Tallest Purple (voice)

📋 All Seasons of Invader ZIM

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