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Characters / Invader Zim

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Zim and Allies

Voiced by: Billy West (pilot only) Richard Steven Horvitz (series)

"I am Zim, and Zim shall rule!"

A pint-sized alien from the planet Irk, with an ego as big as he himself... isn't, Zim is a walking disaster area that somehow remains oblivious to his own shortcomings and the contempt his people hold him in. He thinks he was sent to Earth as an Invader to ready the planet for hostile takeover, but really his leaders were just trying to get rid of him by sending him as far away as possible (they didn't even know there would be a planet there for him to try to conquer). On Earth, he aims to Take Over the World, but is of course continually thwarted, either by his Dib's interference, GIR's stupidity, or his own incompetence.

  • Abusive Alien Parents: "I love you cold, unfeeling robot arm!"
  • Accidental Hero: In Enter the Florpus, he opens the titular interdimensional space hole that the Massive ends up flying into, possibly dooming the Irken Armada and stopping Operation Impending Doom II for the forseeable future. With this in mind, Zim may have just saved the entire galaxy from the Irken Empire. Not that he's aware of it.
  • Adaptational Badass: While in the series he was typically portrayed as a ridiculous Not-So-Harmless Villain, Zim in Enter the Florpus is portrayed as more of a genuine threat to the entire universe, albeit one who is still quite Laughably Evil and so incompetent that his plan would've completely blown up in his face anyhow.
  • Adaptational Intelligence: While just as much of a lunatic as ever, in Enter the Florpus, Zim is presented as a far more patient chessmaster with his infamous impulsiveness from the show downplayed.
  • Aliens Speaking English: He comes from planet Irk, yet somehow still knew English before even coming to Earth.
  • All of the Other Reindeer: Even though he's completely oblivious to it, his reputation among the other Irkens is less than amiable. He's not really liked on Earth, either, though he generally fares better there than Dib.
  • Ambition Is Evil: He's an extremely driven and ambitious little guy who never gives up, and is also a wannabe conqueror of worlds with almost no empathy.
  • Amusing Alien: It's amusing to look at his schemes unless you're Dib.
  • Arson, Murder, and Jaywalking: Despite being an enormous thorn in their side, the Tallest and the Control Brains usually just punish Zim by demoting or banishing him. That's for all the death and destruction he caused. The crime that ultimately puts him on the fast track for termination during "The Trial"? Having a faulty PAK. Then again, as noted in Awesome Backpack, that PAK is pretty much Zim's backup brain, meaning that its existence proves Zim is inherently messed-up.
  • Asshole Victim: Whenever his plans backfire in painful ways, it's very hard to argue he doesn't deserve it.
  • The Atoner: He is in part driven by his desire to make up for his disastrous incompetence during the original Operation Impending Doom. Not out of any kind of guilt, mind you; just so that the rest of his species will get off his back about it.
  • Attention Deficit... Ooh, Shiny!: Zim has incredibly poor listening skills, and seems to retain only information he likes. "Walk for Your Lives" is probably the worst example, where Zim ignores literally everyone around him (even GIR) telling him that to speed up a time-locked, city-destroying explosion would produce... exactly that.
    Dib: Zim, you're just going to blow us all up?!? This is stupid! This... is stupid stupid!
  • Awesome Backpack: If you don't think that a backpack with spider legs, an organ-stealing device, goggles, an entire personality and history, memories, and a hologram device isn't cool, then you need to taste some DOOM. That backpack is part of what allows Irkens to live. Without it, they literally can only survive for ten minutes at a time, and it also serves as a backup brain, effectively making them amnesia-proof. Unfortunately, according to the unaired episode "The Trial," Zim was given a defective PAK, which is the reason (or at least part of the reason) why he is so uncontrollable.
  • Ax-Crazy: Incredibly so. It's clear as day that he's completely unhinged.
  • Bad Boss: He can competently rally complete strangers to his causes, but he has no qualms about ditching them when they're no longer useful.
  • Based on a Great Big Lie: His mission to take over Earth was assigned to him simply to get him out of the way of the actual operation to conquer the universe, and holds no actual significance whatsoever. Despite this fact being blatantly obvious, Zim's Blind Obedience to the Almighty Tallest generally causes him to ignore any evidence that suggests it.
  • Benevolent Boss: That being said, he is rather friendly towards his two Co-Dragons (GIR and Minimoose), and in Enter The Florpus Zim gets distraught for his Mecha-Mooks when Professor Membrane destroys Zim's robot army.
  • Bald of Evil: He has no hair, being an Insectoid Alien, though he wears a wig in his human disguise.
  • Beware the Silly Ones: Zim is deeply silly, but he's also dangerous and tends to cause mass amounts of wanton destruction when left to his own devices.
  • Big Bad Triumvirate: On any other given day, Zim falls squarely into Big Bad Wannabe, but the only time Zim ever comes close to proper Big Bad status is in Enter the Florpus. He's the cause of all the mayhem that ensues, including putting Earth at the mercy of the two other major threats in the form of the Tallest and the Florpus Hole.
  • Big Bad Wannabe: He's set on conquering Earth and hatches multiple schemes to accomplish this, but his general incompetence hampers him every step of the way, and on the off chance he does succeed, it's often for petty revenge over furthering the invasion. Even in Enter the Florpus, though he succeeds in teleporting Earth into the flightpath of the Massive, the real threats to Earth come from the Tallest just deciding to blow up the planet rather than deal with Zim, and the Florpus Hole Zim unwittingly created by teleporting Earth in the first place. GIR even notes that despite Zim claiming victory when the end of the world is happening, none of the humans are even looking at him or aware of his involvement.
  • Big "NO!": This is basically one of his catchphrases.
  • Bizarre Alien Biology: "Gah, my squeedlyspooch!"
  • Blatant Lies: He tends to tell very obvious lies about being human and not being an alien, but most humans are too stupid to realize this. Who has a skin condition that includes earless and noseless side effects?
  • Blind Obedience: He recognizes that GIR is defective on sight and shows clear confusion about why the Irken Empire would have any interest in taking over a planet as backwater as Earth, but graciously accepts the duty of oveseeing both due to his loyalty to the Tallest, who assigned them to him.
  • Blue-and-Orange Morality: While he can still be an exceptionally vindictive bastard, most of what Zim does is determined by what he deems necessary to fulfil his purpose as an Irken drone. As such he's willing to go to very bizarre and dangerous lengths to achieve this, and fails to understand why it's wrong to do so.
  • Blunt Metaphors Trauma: Almost Blunt Words Trauma. Although Zim speaks perfect English, he has a tendency to mix up words, or in some cases he just doesn't listen and ends up hearing the wrong thing.
    Dib: You're just jealous!
    Zim: This has nothing to do with jelly!
  • Burger Fool: Zim was banished to a planet called Foodcourtia where he had to do community service for royally screwing up Operation Impending Doom I. Also, he works in a fast food restaurant on Earth in "Career Day".
  • Butt-Monkey: He fares slightly better than Dib most of the time, but is still constantly beaten up and humiliated.
  • Can't Kill You, Still Need You: Zim has the means to destroy the Earth, but since he's ostensibly there to conquer it, his hands are often tied. That being said, he is not averse to letting mankind wipe itself out (with a little assistance from him) if the opportunity arises and slaves are just a nice bonus to the Irkens and not necessary acquisitions.
  • Card-Carrying Villain: "Now...back to my filthy evil, I guess..."
  • Catchphrase: "YOU LIE!!", "SILENCE!!!", "I AM ZIM!!!" and "NOOOOOOOOOOOOOO!"
  • Chaotic Stupid: He has repeatedly shown himself to be determined enough to not only easily conquer Earth but the entire galaxy, yet his impetuous nature and his COMPLETE lack of consideration for the consequences of his actions results in utter failure and/or the deaths of people he WASN'T trying to kill.
  • Characterization Marches On: His hamminess noticably comes in spurts in the pilot episode, as opposed to being his default state as it is for the rest of the series.
  • The Chessmaster: In Enter the Florpus, where Zim is at his most cunning and meticulous when it comes to his planning, having his bases covered far more than ever.
  • Clark Kenting: Zim's human form is basically himself but with human eyes and a slick hairstyle.
  • Cloudcuckoolander: In one episode, when confronted by fully mobile talking babies, he stated that 'I knew it! Earth babies come from space!'. More pointedly, in an unfinished episode called "The Trial", he is kidnapped and brought to court among his people; in spite of the flagrant evidence that it is, in fact, a trial for his continued right to exist, he insists on believing it to be a party in his honor. In what was to be that episode's ending, Zim is scanned for defects by the robot "control-brains" that run the planet. His insanity drives the machines to madness, and they declare him the greatest of all Irkens. The Tallest weep as Zim is given ten free minutes of piloting the Massive and proceeds to gleefully smash it into everything like a little kid driving a bumper car at an amusement park.
  • Cloudcuckoolander's Minder: To GIR all the time, even though he's a Cloudcuckoolander himself.
  • Comedic Sociopathy: Most of his insane, self-centered and spiteful deeds are Played for Laughs.
  • Complexity Addiction: In "Dib's Wonderful Life of Doom", he traps Dib in a Lotus-Eater Machine simulating decades of life (from childhood to old age), all to find out if he was the one who threw a muffin at Zim.
  • Cosmic Plaything: Sometimes. There's a good chance that circumstances will contrive to force him in the most hilariously painful way possible... then again, sometimes he succeeds and that doesn't really matter. But when his leaders want him gone, or for him to fail, it will blow up in their faces. More than any situation involving him usually blows up in someone's face, considering that it's seemingly impossible for him not to destroy anything.
  • Crossdressing Voices: As a baby. Some foreign dubs also give him a voice actress, probably to facilitate his more high-pitched voice, as Richard Horvitz has a range that's unattainable for most male voice actors.
  • Crouching Moron, Hidden Badass: When he does put up a fight ("Hobo 13"), he can be surprisingly competent and clever.
  • Deadpan Snarker: Usually Zim is Sarcasm-Blind thanks to his massive ego and craziness, but he does get a few moments occasionally to get his snark on (usually at Dib's expense).
  • Decoy Protagonist: In Enter the Florpus, it becomes more apparent as the movie goes on that Dib is the main character, with Zim being less the Villain Protagonist and more the plain ol' Big Bad.
  • Despair Event Horizon: Though it doesn't last long, in Enter the Florpus Zim becomes despondent when he finds out that the Almighty Tallest had no intention of coming to Earth.
  • Determinator: Continuing his "mission" even after being exiled due to his entire species loathing his very existence, although there's disagreement as to whether he merely ignores their scorn or he really is that stupid.
  • Devil in Plain Sight: Or with a Paper-Thin Disguise...
  • Didn't Think This Through: One of his main personality traits; Zim's plans often fail because he tends to think precisely one step ahead of his current problem. This is best shown in "Walk For Your Lives", where the explosion of his time stasis field device is slowed down, but will eventually grow to destroy Zim's base and the whole city. Not wanting the Tallest to see an embarrassing screw-up like this, Zim desperately works out a way to get rid of the explosion. His solution? To cancel the stasis field under the assumption that once the field is canceled, the explosion will be gone forever, not factoring in that doing so will annihilate his base and the whole city. He ultimately goes through with it, despite his computer, Dib, and even GIR all telling him that it's an absurdly bad idea.
  • Disguised in Drag: At one point in "Walk For Your Lives", he's disguised as a giant old lady.
  • Doom Magnet: Thanks to his stupidity, insanity, and lust for violence, he tends to cause wanton destruction everywhere he goes. He's both hated and feared among his own people for this very reason.
  • The Dreaded: Hated, ridiculed and feared by his entire race. Not that he notices.
  • Enfante Terrible: He wasn't even two minutes old when he accidentally caused a massive blackout on Irk that lasted five years and came to be known as "Horrible Painful Overload Day". And then when he was ten, he caused another one that lasted four more years and was called "Horrible Painful Overload Day, Part II".
  • Even Evil Has Loved Ones: In his case, GIR is the closest thing of a loved one that he has given his behavior toward him. He also has shown slight slivers of affection towards the Roboparents in "Parent Teacher Night".
  • Even Evil Has Standards: It's a comparatively minor one, but in Battle Of The Planets he's confused and flabbergasted why the Martians would work their entire species to extinction building a Planet sized ship just because it's "cool."
    • Before mellowing out and experimenting with various hobbies in the Grand Finale of the comic, Zim exploited the "Groundhog Day" Loop of the titular Dookie Loop Horror to kill Dib enough times that he was able to create an entire, bulging scrap book full of his rival's many, many deaths. This was all in good fun apart from one very gristly murder where GIR decapitated Dib and used the rest of his body to make a "people pie", the sight of which was so horrifying to Zim that he never wanted to see it happen again, and the smell of the process was so foul that it briefly overpowered the Chrono-Dumper dung that causes the time loops.
  • Evil Is Hammy: Most of Zim's plans come with long tirades that he just loves to inflict on whoever he's forcing to listen.
  • Evil Is Petty: Despite being older than every other human on Earth, Zim's greatest rival comes in the form of an 12-year-old child no one even believes. The biggest example is when he put Dib through a Lotus-Eater Machine where he lives a fulfilled life and is adored by everyone...because he threw a muffin at him.
  • Evil Laugh: Incredibly good at this. In the show's opening, he is seen laughing maniacally in an Imagine Spot of succeeding in his conquest.
  • Expressive Mask: His contact lenses change pupil size like real eyes. Somehow.
  • Fatal Flaw: He has two — his vanity and unwillingness to abide by common sense. The truth is that Zim is genuinely brilliant and a deadly invader when he applies himself. Unfortunately, he's less than aware of this, which leads him to concocting insane half-plans that always blow up in his face. If it weren't for (most) of the human population being stupid and the universe making Dib its chew toy, Zim would have been defeated long ago under normal circumstances.
  • Faux Affably Evil: The few times Zim teams up with Dib to stop an even worse/more chaotic evil, Zim usually tries to put on a vague facade of politeness but it's still obvious that he utterly hates having to work with the human.
  • Failed Attempt at Drama: In the 2017 teaser trailers for Enter the Florpus, he tries to scare the audience with a video message about his return and newfound plans to conquer Earth, only to get interrupted by GIR.
    Zim: (in a deep and ominous voice) People of Earth...did you really think you'd seen the last of me? Don't you know an Invader never stops until their mission is complete? I've been watching you. Waiting. And soon your world will be MINE!
    (GIR giggles)
    Zim: (returns to normal voice, annoyed) No, GIR! I'm being serious!
    GIR: But I like your voice! It's funny!
    Zim: I'm not being funny! I'm being, you know, terrifying and spooky!
    GIR: Oooooh, okay!
    Zim: (resumes deep voice) Soon your world will be... (normal voice) ...Nope! You've ruined it, GIR! Nice going!
    GIR: Awww.
  • Galactic Conqueror: As the show's title speaks for itself.
  • General Failure: He really is a moron. His stupidity is usually what prevents him from conquering anything at all (if Dib or GIR has no interference). The most common assumption for this is that he carries a defective PAK, which is basically an Irken invader's brain, knowledge and competence. An interview with Richard Horvitz said this is partially because of his blind allegiance to his planet. Horvitz said Zim would tell right away GIR was just trash, but because the Tallest said he was "advanced", Zim instantly believed them.
  • Genius Ditz: invoked It can be hard to credit, but he's demonstrated some true cunning on occasion. He's more insane than stupid, but his insanity is what makes him do stupid things in the first place, so it's hard to tell the difference. Word of God has noted that Zim is best described as a genius with horrifically skewed priorities and no common sense.
  • Girl Scouts Are Evil: When he's selling Poop candy bars for a school fundraiser to get the mystery prize in "Door to Door".
  • Goal in Life: To conquer Earth, enslave all humankind, and impress the Tallests. Due to his stupidity, he's never going to accomplish it.
  • Hair-Trigger Temper: He's known for his anger issues.
  • Harmless Villain: If it isn't Dib who stops him, it's usually his own stupidity. Gaz herself lampshades it in "Enter the Florpus", where ironically he's actually proven to be a Not-So-Harmless Villain when he really applies himself.
  • Hated by All: Outside of GIR (and even then that's almost only because of his stupidity), nobody likes Invader Zim. This is for a multitude of reasons, such as Zim's utter insanity and incompetence (most characters), Zim trying to take over the world (Dib), Zim ruining their life (Tak), etc. And even though the children defend Zim from Dib's accusations, they still hate the Irken's guts. Even GIR has been shown to hate Zim in "Duty Mode" and his base's computer is very snarky towards him. In addition, his entire race despises him, often mocking Zim behind his back, and the Tallest only made him an Invader so he wouldn't horribly derail their plans for universal conquest. Not that Zim is aware of this contempt, of course.
  • Hates Being Touched:
    • In "Mortos Der Soul Stealer", Dib wasn't touching him per se, but holding him down so Mortos could steal his soul. Zim reacted very negatively to it.
    • In "Germs", he really doesn't want to be hugged by GIR, though this could be due to his germophobia.
    • This dialogue in "Bestest Friend":
      Keef: (hugs Zim) I'm so happy!
      Zim: (pushes Keef away) Don't touch me.
  • The Heavy: Like all Irken invaders, Zim acts as an agent for the Tallest, being charged with conquering Earth.
  • Hidden Depths: When he doesn't have time to let himself swell up in his own ego, he can be quite dangerous and a really skilled opponent. He's very intelligent, just reckless and too loyal to his race for his own good. He also has disturbingly vivid fears: he's very obsessive-compulsive (to the point of breaking down crying when he discovered how filthy his house is) and has very specific fears of being discovered by humans, mutilated, and kept in a dark room for the rest of his life. In addition, despite the militarised conditioning that Irkens go through as soon as they're born, his reaction in "Parent Teacher Night" to remembering the robot arm that first greeted him indicates, if anything, the capability to experience love and further a desire to be loved, and he looks both relieved and downright euphoric to see the Roboparents take him into their arms at the end of the episode.
  • Hijacking Cthulhu: Many a plan of Zim's involves harnessing a force greater than himself. Ex. the Wormhole Moose, the Mars-ship, the Star Donkey, the Pants-parasites, the Brain-Eating Parasite, and the Florpus Hole. In most cases it backfires on him...and quite often everyone else.
  • His Own Worst Enemy: Having demonstrated his intelligence and genuine competence time and time again, it has been increasingly clear just who is in his way of becoming the greatest Invader of them all: Zim.
  • Humanoid Aliens: He has the general shape and proportions of a human child but also has green skin, no ears, a lizard-like tongue, red insect eyes, and antennae. Funnily enough though, everybody on Earth except Dib and Gaz is so stupid that with just contacts and a wig he's able to pass off his green skin and lack of ears as a "skin condition".
  • Humans Are Ugly: A firm believer of this. In fact, he sticks with his counter-productive Paper-Thin Disguise because he doesn't want to look too human.
  • Humans Through Alien Eyes: Sees them as stupid and revolting, which to be fair, is not entirely inaccurate when it comes to humans in this show. Secretly, though, he's also terrified of humans; one of his recurrent fears is being captured and mutilated by human authorities.
  • Hypocrite: He condescendingly pities "poor, deluded Skoodge" for thinking the Tallest still hold him in favor. The irony of this really needs no explanation.
  • Hypocritical Humor: (laughs) "Inferior human organs! ...Ow, my squeedlyspooch!"
  • I Have Your Wife: Coerces Vortian Prisoner 777 for information by holding his children hostage and threatening to "erase" them.
  • Ineffectual Sympathetic Villain: Deconstructed. While it's hard not to pity Zim at times given how much he goes through trying to fulfill his purpose,with his leaders brushing him off as a defective failure, his sheer devotion to the Irken Empire's genocidal agenda, as well as the fact that he's capable of some truly vile and horrifying deeds, reminds you how much of a monster he is.
  • Insane Troll Logic: "My Tallests, a new child attacked me with meat. My conclusion? SHE'S IN LOVE WITH ME!" Amusingly, given that the customary Valentine's gift on Earth in the Invader Zim universe is meat, this might in fact be one of the few times Zim was actually paying attention to the humans.
  • Insectoid Aliens: Zim, and all other Irkens, resemble generic humanoid bugs, not helped by the fact that their PAKs contain mechanical spider legs.
  • Insufferable Genius: Zim is brilliant with alien technologies and even an effective strategist at times, but he overestimates his own abilities and likes to declare out loud that he's an incredible genius.
  • Insufferable Imbecile: A selfish, Lethally Stupid jerkass whose evil plans often fail due to his own stupidity.
  • I Reject Your Reality: Zim's remarkable ego is a great example of this. Any evidence that suggests the Tallest don't like him and that his mission to conquer Earth is a lie meant to get rid of him will go in one ear and out the other. A notable example occurs during Dib's failed attempt at an Enemy Mine in "Gaz, Taster of Pork":
    Zim: Help you!? Why should I help you!?
  • It's All About Me: Zim is absurdly selfish and cares about no one else.
  • Jerk with a Heart of Gold: Though he would never admit it, he's occasionally shown to care about GIR.
    • In Battle of the Planets, when GIR was actually being helpful (in his standard crazy state, no less), he said to himself: "Maybe that little robot isn't such a bad evil minion after all."
    • In an unfinished episode, he screamed in sorrow when he thought GIR transformed into ground beef.
    • "And I already promised the moon to GIR."
    • In "Halloween Spectacular Of Spooky Doom", he was worrying if GIR could take on all the "zombies" all by himself.
    • Once Zim gives GIR a lollipop when he cried, though it was mostly to shut him up.
    • When GIR gets the two lost and Zim snaps at GIR, causing him to cry, Zim looks uncomfortable and comments that yelling will get them nowhere which is as close to an apology as Zim might ever get.
  • Jerk with a Heart of Jerk: In "FBI Warning of Doom" and "Planet Jackers".
  • Karma Houdini:
    • Sometimes, sometimes not. The most prominent example is "Dark Harvest", where he gets no repercussions for stealing his classmates' organs to avoid being found out as an alien.
    • In Enter the Florpus despite his actions endangering the Earth, he gets off relatively scott-free and still continuing his plans for world domination. It eases the sting in that, though he's still up to his old tricks, his actions seem to have inadvertently doomed the Almighty Tallest and virtually all of the Irken Empire to the Florpus Hole, a fact that he remains oblivious to. Also, a pug falls on his head from space.
  • Kill All Humans: That or enslave them — he changes it from enslaving, ruling, killing, poisoning their food supply and cutting their legs off depending on the episode. The bottom line is that the Earth needs to be ready for the other Irkens to conquer, so the humans need to either be gone or easy to enslave.
  • The Kingslayer: An unproduced episode reveals that he is responsible for accidentally killing the two Almighty Tallest, Miyuki and Spork, who came before Red and Purple. His actions in the movie may have lead to the deaths, or Fate Worse than Death, for Red and Purple as well, bringing the number up to 4.
  • Lack of Empathy: He has no empathy for anyone unless it's GIR or the Tallest.
  • Large Ham: His hamminess is so large that it has its own gravitational pull.
  • Laughably Evil: Yes, his intentions are to conquer the Earth and he's overall a raving Jerkass, but Zim is still the funniest member of the whole cast by a wide margin, providing a lot of laughs thanks to his utter insanity, absurdly disproportionate ego, bitter sarcasm, and stupefying incompetence.
  • Lethally Stupid: He was originally exiled to Foodcourtia after he went on a killing rampage on his own home planet. In the unfinished episode "The Trial", it's revealed that he destroyed several planets by scratching himself. Unfortunately, where it's required for him to actually destroy everything (Earth) he doesn't quite succeed.
  • Loners Are Freaks: He's a social outcast at Skool (and in general), but has no interest in cultivating friendships. The one time he attempted to make a friend was solely as a means of avoiding being outed as an alien, and ended just as quickly as it began.
    Zim: Tch... humans and their friendships... Invaders need no one! NO ONE!
  • Mad Eye: This is a Jhonen Vasquez production, after all.
  • Mad Scientist: He was once a military scientist, but was exiled to food service after accidentally killing the Almighty Tallest. He's still prone to performing unethical experiments in the series proper; often with live test subjects.
  • Made of Iron: Probably another good reason the Tallest fear him. He gets burned by toxic rain water, gets his lenses boiled by the sun, takes a brutal beating from a Planet Jacker, gets flayed alive in "Lice", gets grotesquely swollen up by a cosmic eclipse, and gets feasted upon by a brain parasite, among other injuries. He never loses his confidence, and if anything these just seem to encourage him to keep trying.
  • Mike Nelson, Destroyer of Worlds: In the unproduced episode "The Trial," it's revealed that he has, in fact destroyed more than one planet. By scratching himself.
  • Mirror Character: He and Dib share a lot in common. Both of them are looked on as incompetent or crazy by regular members of their respective races due to past incidents. Both of them are capable of being legitimately dangerous in spite of their quirks. Both of them are mocked by their own race for a perceived physical quirk (being small in Zim's case, having a big head for Dib). Both of them are obsessed with proving their worth and success to their peers. This is something Dib even briefly acknowledges in Enter the Florpus during Zim's Despair Event Horizon.
    Dib: You know... my dad doesn't respect what I do, either.
  • Mood-Swinger: While he's most known for being a Large Ham, the occasional moments when he's shockingly nonchalant are often just as funny. "Zim Eats Waffles" in particular features him oscillating between his usual diabolical ranting and a more laid-back casualness.
  • Most Definitely Not a Villain: He passes himself off as a human and nobody else but Dib and Gaz notice that he doesn't look much like a human.
  • The Napoleon: He is from a society that determines rank from height, and is the size of a human child, due to him being hatched prematurely. For comparison, he is roughly the same age (if not older) than The Tallest, but doesn’t even come up to their knees. As a result he's perpetually eager to please his leaders, but being a Too Dumb to Live Genius Ditz he only succeeds in making things worse.
  • Neat Freak: In "Germs", he starts to get obsessed with cleanliness due to becoming germophobic to paranoid levels.
  • Nice Hat:
    • In "GIR Goes Crazy and Stuff", he wears a police hat he took from Officer Squidman.
    • When he works at the fast food restaurant in "Career Day".
  • Nice Job Fixing It, Villain!: His efforts to get the Almighty Tallest to notice him in Enter the Florpus ultimately results in most (if not all) of the Irken Armada getting sucked into the titular Florpus, freeing the galaxy (at least temporarily) from their conquest. Zim is completely oblivious to this, of course.
  • No Indoor Voice: Zim tends to be pretty shouty most of the time ("You lie! You liiiiiiiiiiiiie!!!") This trait of his is lampshaded in "Issue #17" of the comics, where Dib tells him that he yells too much, and that he never realized how annoying it was until spending time locked up with him.
  • Not Me This Time: One of the comics has him try to infiltrate the local equivalent of the Girl Scouts. Dib bursts in and yells that there's an alien in disguise trying to take over the earth here... and the scout leader rips off her rubber mask and reveals herself. Turns out Zim was only there to steal cookies to bribe GIR with.
  • Not-So-Harmless Villain:
  • Oblivious to Hatred: He is utterly blind to how much his entire species hates him, due to both his insanity and big ego tainting his view of things.
  • Odd Friendship: With GIR, his robot sidekick. Zim's a megalomaniacal, egotistical world conqueror while GIR's a ditzy, cheerful Cloudcuckoolander, but they seem to get along fine for the most part.
  • Off-Model: In one shot in "Megadoomer", his uniform is red instead of pink.
  • Older Than They Look: Jhonen Vasquez has stated that Zim is far older than any human on the show and is only treated as a kid due to his height. This only makes his feud with an 11 year old boy look that much more pathetic.
  • Omnicidal Maniac: He even embarked on a destruction spree on his own planet. Either he didn't understand how much devastation he caused or he just doesn't care.
  • Paper-Thin Disguise: Consists of a wig and contact lenses (that apparently are very uncomfortable and can be knocked out just from hitting him in the head) doing nothing about his vibrantly green skin. Which may may you think at first, since Irkens have the technology to make themselves look completely human, but he only picked that one because he thinks he's too attractive to be covered up. He claims he has a skin condition, which is also the reason why he doesn't have ears... The funny part, though, is that given later episodes, Zim is shown to actually put the most work into his disguise compared to other Invaders.
  • Person of Mass Destruction: Tricky to place, but Zim does do a lot of damage, intentionally or not. According to the unmade scripts, he single-handedly started a crippling global blackout when he was about four minutes old. And according to that same script, he once seemingly blew up a planet just by standing there while scratching his butt. In fact, he was sent to military research because, in the words of the Tallest Miyuki (the Tallest at the time) "He destroys everything he touches!"
  • Pet the Dog:
    • Rather literally, Zim has had a few moments of genuine-seeming kindness directed at GIR, whose disguise consists of a dog.
      Zim: It's over, Tak! The Earth is mine to devastate! ...And I already promised the moon to GIR.
    • Amusingly downplayed in "Tak: The Hideous New Girl". When he's summing up the episode's events to the Tallest at the end, he briefly admits that he couldn't have defeated Tak without the assistance of "the filthy humans" (read: Dib and Gaz). Of course, he immediately goes back on that and claims that he used mind control on them to get their assistance with his plan, but considering how Zim sees all of humanity as only fit for either extermination or being Made a Slave, that's still a pretty noteworthy moment of humility from him.
  • Pick on Someone Your Own Size: His rivalry with Dib... although, technically, they are the same size...
  • Pintsized Powerhouse: He's absolutely tiny compared to a lot of characters in the series but he's ridiculously destructive. And insane.
  • Pragmatic Villainy: He usually will team up to stop a greater threat from destroying the earth, but make no mistake this is because he wants to ravage the planet for himself.
  • Psycho for Hire: He prefers Humongous Mecha and his Kill Sat instead of killing and maiming directly, but it's hard to ignore the maniacal glee with which he steals organs or reduces cities to rubble.
  • Psychopathic Manchild: He's an adult by Irken standards (the Almighty Tallest are actually his peers in age), but he's also childish enough to have a mutually intense rivalry with a twelve-year-old human boy.
  • Puppeteer Parasite: His PAK would have been revealed to be one in "Ten Minutes to Doom".
  • Really 700 Years Old: Word of God has him "older than any human alive," at any rate.
  • Real Men Wear Pink: His uniform is pink and he looks like he's wearing a dress.
  • Reassigned to Antarctica: The Tallest sent him to invade Earth simply to keep his incompetence from screwing up the more important plans of Irken conquest.
  • The Remnant: By the end of Enter the Florpus, a combination of his shortsightedness, the Tallest's stupidity and the Membrane family's resistance results in the entire Irken fleet becoming trapped inside an interdimensional hellscape, which may have ended Operation Impending Doom II and potentially the Irken Empire itself. Zim himself is totally unaware of this, and continues his effort to conquer the Earth in preparation for the Tallest's arrival. Assuming this isn't handwaved away by Negative Continuity, his mission, which was already a Snipe Hunt to begin with, is now truly of absolutely no consequence.
  • Right for the Wrong Reasons: In Enter the Florpus, Zim realizes that the Almighty Tallest and Irken Armada will never actually come to Earth. However, Zim thinks that this is a punishment for him forgetting "Phase 2" of his plan and wasting their time earleir, when in reality the Tallest were never going to come to Earth regardless (as they both hate him and Zim is The Exile).
  • Sanity Has Advantages: He has proven himself several times to be pretty badass and can be very intelligent. Heck, if he wasn't totally out of his mind, he'd be the best soldier the Irkens could have. As it is, his erratic nature, immaturity, and delusions mean that he's more a threat to the Irkens than to anyone else.
  • Secret Identity: On Earth, he has a secret identity through his Paper-Thin Disguise.
  • Selective Obliviousness: Due to his massive ego, Zim cannot conceive the idea that his superiors hate him and want nothing to do with him, no matter how plain they make their contempt for him known. Even in Enter the Florpus when Zim discovers that the Irken Armada isn't coming to Earth, he assumes it's because the Tallest are angry at him for failing to think of a Phase 2 of his plan to conquer Earth and not that they were never planning on coming in the first place.
  • Screaming Warrior: Mostly averted; Zim attempts this but usually ends up with a high-pitched squeal.
  • Screams Like a Little Girl: He screams like a little girl when he's afraid or in pain.
  • Sensitive Guy and Manly Man: The Manly Man to GIR's Sensitive Guy.
  • Sheathe Your Sword: The first issue of the comic has Zim reaping the fruits of a very simple and effective Batman Gambit he set up against Dib. By doing absolutely nothing for a prolonged period of time, he knew that he'd make Dib so paranoid as to what he was plotting that he'd waste all his time and energy trying to seek him out with his surveillance equipment, neglecting his body and turning himself into a fat, noodle-armed impotent who would be incapable of interfering with Zim's real scheme. Enter The Florpus starts with the end-result of him doing this, and he takes advantage of it by switching around people's mail, read newspapers he doesn't have a subscription for, and kick over trash cans.
  • Skewed Priorities: invoked Despite his reputation, Zim is in fact a genius with a lifetime of incredible scientific achievement under his belt. The problem is that he's easily distracted and is horrible at prioritizing his goals. Jhonen Vasquez has listed the episode "Megadoomer" as the perfect example of this trait, where, after receiving the most powerful weapon the Irken Armada has ever created, he rationalizes that the best use of the machine would be petty revenge on Dib (rather than attacking a strategic target or fixing the machine's faulty power systems).
  • Slasher Smile: In many of his Ax-Crazy moments, he grins in an unnerving fashion.
  • Small Name, Big Ego: He is despised by his species due to the combination of this trope and Too Dumb to Live.
  • Smug Snake: His massive ego is what usually prevents him from succeeding, because when he doesn't have time to let his ego have any impact on his decisions, he's actually quite badass (especially prominent in "Hobo 13").
  • Snipe Hunt: His mission originally began as one of these, as the Irken Empire wasn't entirely sure there was a planet where Earth was, and he was simply sent there to get rid of him. When he finally reached said planet six months later, the operation "upgraded" into a case of Reassigned to Antarctica.
  • The Sociopath: Given that he is part of a race who're obsessed with conquering planets for petty reasons, it's not surprising that he has virtually zero empathy for other people and is willing to hurt people without remorse. Justified still, since he isn't very good at acting out false feelings, however, the humans are too stupid to notice.
  • Spanner in the Works: Single-handedly ruined Operation Impending Doom I by accidentally devastating the Irken homeworld as a result of being too short to see over the control panel of his Humongous Mecha. He ends up doing the same with even more catastrophic results in Enter the Florpus, where his moving the Earth to be along The Massive's warpath ends up creating the interdimensional Florpus that the entire Irken Armada gets trapped in, not only slowing/stopping Operation Impending Doom II but potentially destroying the entire Irken Empire.
  • Spider Limbs: He has spider-like legs emerge from Awesome Backpack.
  • Square Race, Round Class: Being an (ex-)invader runs counter to Zim's destructive talents. As Red accurately put it, invaders are supposed to "observe" and sabotage planets rather than annihilate them outright.
  • Static Character: At the end of the day, he is and probably always will be the conquering little maniac we love to hate, and never move beyond his quest to Take Over the World. Even when he falls into a temporary depression over his Tallest not caring for him, he still just as quickly gets back into the groove and is happy to go back to his normal routine even after his plans are thwarted. One could say that this is deliberate, as he's pathologically incapable of recognizing his flaws and is much happier in the fantasy that he's a great invader.
  • Stop Worshipping Me:
    • In "Attack of the Saucer Morons", he gets discovered and captured by a group of alien-worshipping cultists who proclaim themselves his loving servants. Zim, who finds humans repulsive, wants nothing to do with them and tries to escape their clutches as fast as possible.
    • In Issue 7, he's initially happy to have the rapidly-evolving amoebas worship him. However, they quickly get on his nerves, to the point where he repeatedly tries in vain to get them to leave him alone.
  • Stupid Evil: He veers between this and Chaotic Stupid:
    Zim: I put the fires out!
    Tallest: You made them worse!
    Zim: Worse... Or better?
  • Super OCD: "GERMS!!"
  • Sycophantic Servant: He goes to extreme lengths to impress the Tallest.
  • Take Over the World: The premise of the show is that he attempts to conquer Earth.
  • Temporary Bulk Change: He becomes enormously bloated in "Dark Harvest" as a result of stealing organs from his Skool classmates and eating them.
  • Terrified of Germs: In "Germs", he panics when he sees germs on every surface of his house while looking through his germ-finding goggles.
  • That Liar Lies: Zim's proclamations of lies, and how they usually bring out his hamminess, is a Running Gag.
  • There Is No Kill Like Overkill: If it's not his personal motto, it ought to be.
  • They Would Cut You Up: Zim fears this would happen if he were caught by Earth's natives. Dib explicitly threatens him with it. At one point he's seen vividly imagining his fate, human scientists stuffing him in a jar, dancing around his helpless body, cutting out limbs and eyes and keeping him a dark room for the rest of his life.
  • Third-Person Person: "I am Zim, and Zim shall rule!"
  • The Starscream: Normally averted completely, since he’s obsessively loyal to the Tallests despite them blatantly not caring about him, but in his Motor Mouth message to thank them for (accidentally) sending him the Megadoomer, he apparently wants to rule the universe himself, though even then he says they “won’t be forgotten”
  • Tomato Surprise: After adapting the opening of the comicbook series, the film's plot is kicked off when Zim finds out that the Almighty Tallest have no intention of ever coming to Earth, wrecking Zim's usually unflappable confidence and giving Dib (who has become fat and filthy due to Zim's manipulations) a chance to stage his own comeback.
  • Too Dumb to Live: Unable to learn from his various lethal mistakes... and it doesn't help that he often comes out of them unscathed.
  • Too Spicy for Yog-Sothoth: In the unproduced episode "The Trial", he is declared a defective by the Control Brains, who sentence him to execution and attempt to erase the data from his PAK (which he needs to live). But his PAK is filled with so much bad data that absorbing it drives them insane and causes them to instead declare him the most incredible Irken ever.
  • Twitchy Eye:
    Zim: We cannot fail, Gir. Even as a small Irken smeet my dream was to pass Probing Day like a sloorbeeze passes her young. JIGGLY! And full of juice. (twitch twitch)
  • Uncertain Doom: Due to Negative Continuity, many episodes end with Zim potentially dying/revealed to the public. In "The Wettening," we last see him drowning in a toilet. In "Hobo 13," he possibly flies into a sun when The Tallest tamper with his new ship's controls. In "Backseat Drivers From Beyond the Stars," we last see him screaming in pain as his own brain-eating Parasite procceeds to eat his brain. In "Dibship Rising," Tak's Ship throws Zim into space and we don't see him again. And in "Attack of the Saucer Morons," both he and GIR have their true forms revealed to two different groups of alien-worshipping cultists and UFO investigators.
  • The Unfettered: Zim will stop at absolutely nothing to achieve his dream, even if it's for petty grudges, such as dropping a giant water-balloon on Earth just to win against Dib in a water fight.
  • Undying Loyalty: To the Tallest and the Irken Empire. Unfortunately for them, "loyal soldier" is not equivalent to "competent soldier".
  • Used to Be a Sweet Kid: Played for Laughs in a flashback. The first thing he does upon being born — aka awakened by a Control Brain following his creation in an underground lab — is to affectionately glomp onto the robot.
    Zim: I love you, cold unfeeling robot arm!
  • Vague Age: While Zim is short enough to pose as a human child, he also claims that he's been flying ships since before Dib was born. This, combined with Irken biology and their societal views based on height, makes it difficult to place how old Zim actually is. Word of God says that he's an adult by Irken standards, but still leaves how old this actually makes him vague.
  • Villain Protagonist: His goal is to conquer the world under the assumption that doing so will assist the Evil Empire that he serves in taking over the galaxy. Outside of this, he's generally violent, destructive, ammoral and cruel, with little in the way of obviously redeeming traits.
  • Villains Blend in Better: His disguises are garbage, but he can be rather charismatic and deceptively personable once he has enough information about his targets. In the comics, he uses his newly-acquired knowledge of the alternative art scene pretension and related lingo to create a front for an enormous mechanism to summon the Star Donkey.
  • Villainous BSoD: He suffers a complete breakdown and falls into a depression in Enter the Florpus upon finally realizing the Tallest have no intention of seeing his conquest of Earth. Unfortunately, Dib ends up being the one to give him the motivation and plan needed to renew his efforts.
  • Villainous Valor: Whenever he goes up against a bigger, nastier horror(often of his own making) he remains incredibly diligent and is willing to take a beating to overcome any challenge to his mission.
  • Vocal Evolution:
    • His voice was artificially pitched up in the early episodes, causing it to sound lower as the series goes on.
    • Zim sounds a little hoarser in Enter the Florpus, likely because it's been well over a decade since the show and Horvitz is a fair bit older.
  • Weaksauce Weakness: To water. It was supposed to be to polluted water only, but that didn't come across to the writers/animation team/storyboarders. Though, given Earth's state in this setting, one could argue that all water has been polluted.
  • "Well Done, Son!" Guy: Though the Tallest are his leaders instead of his fathers (in fact they're apparently around the same age), a lot of Zim's motivation for conquering the Earth comes from a childlike desire to make them proud, not unlike a little kid wanting his parents' recognition.
  • Won't Take "Yes" for an Answer:
    • A Running Gag with him is that he'll continually interrupt people trying to tell him something, demanding they tell him about the very thing his interruption is preventing them from saying in the first place.
      "Who are you?"
      "I AM —"
      "Who are you?"
      "I AM —"
      "WHO ARE YOU?"
    • Another is for him to randomly accuse people of lying for no apparent reason.
      Zim: Hey, these [waffles] aren't bad. What's in 'em?
      GIR: There's waffle in 'em!
      Zim: YOU'RE LYING!
  • Worthy Opponent: He admits on one occasion he sees Dib as this.
    Zim: You're one of the only people who can appreciate the amazingness of this plan, so I'm going to let you in on what "it" is...
  • Would Hit a Girl: In "Bestest Friend", he tortures Gretchen just off-screen.
  • Would Hurt a Child: Considering that he is actually an adult and that he has no issues with trying to kill or harm any children who get in his way, he is an example of this. Sometimes, they don't even need to be in his way. In "Attack of the Saucer Morons," for instance, he deliberately veers his escape ship so that it's heading straight for a baby. Note the look on Zim's face.
  • You Don't Look Like You: His Series 2 Palisades toy doesn't have a PAK.

Voiced by: Rosearik Rikki Simons

"I like waffles!"

Zim's robot sidekick, on Earth disguised as a dog. Supposedly a "SIR" (Standard-Issue Information Retrieval) unit assigned to all invaders, but GIR is an "advanced" model the Tallest specially gave Zim. And by "advanced", we of course mean "moronic," thanks to having a head literally full of garbage.note  While usually too flighty to be of any consistent help, GIR will now and again go into "Duty Mode," signified by a change of eye-and-panel color from blue to red, and act like a real SIR.

  • Achievements in Ignorance:
    • Without even trying, he's very good at blending in with humans. In "Attack of the Saucer Morons", he has fun dancing with some girls at a nightclub.
    • In the unproduced episode "The Trial", he successfully conquers Earth while Zim is being held prisoner on the Massive.
    • His very creation is a case of this. He was literally slapped together with random lint and garbage for a "brain"/CPU, with a body made from spare parts and according to Word of God, a defunct frozen yogurt maker. And yet the end result was still a fully functional robot assistant. Even with his insanity, the fact that he can turn on and perform even the most basic functions, all things considered is a miracle.
  • Affably Evil: Definitely more amiable compared to Zim.
  • Aliens Love Human Food: GIR has a bottomless appetite and will eat almost anything, his favorites being tacos and waffles. "Halloween Spectacular of Spooky Doom" has him ballooning to a massive size after eating loads of candy stolen from trick-or-treaters.
  • Ambiguous Innocence: GIR is, indeed, innocent — it is hard to imagine he even has the mental capacity to understand that there is a difference between right and wrong, much less know what that difference is. GIR often relishes in destruction only seemingly without malice, but an increase in understanding and competence (such as in the episode "GIR Goes Crazy and Stuff") would simply provide the needed motivation to apply that destructive force purposefully. In short, just because he's dumb and innocent doesn't mean he'd be a sweet-tempered do-gooder if left to his own devices.
  • Anti-Villain: Type IV (unless he "goes crazy and stuff"). Usually he's too interested in snacking or television to do anything actually evil, and the few times he's lucid enough to act like the killer robot he was intended to be, they don't last long enough for him to accomplish anything before going back to his relatively harmless insanity.
  • Attention Deficit... Ooh, Shiny!: Nearly anything can distract him—squirrels, piggies, waffles, the Scary Monkey show, whatever.
  • Badass Adorable: He's a pretty cute robot taking over the world all by himself in an unfinished episode, and he wasn't in duty mode.
  • Bag of Holding: The inside of his head can hold dozens of rubber piggies.
  • Berserk Button: Don't make the Taco Man die in front of him, not even if it's fake.
  • Beware the Nice Ones: It would be hard to say if he is nice or mean, but he isn't as evil as Zim, and he's too dumb to realize how evil he is... and when he's in Duty Mode...
  • Beware the Silly Ones: In one episode, Zim locks GIR into "Duty Mode" (the red-eyed, serious version), and he promptly becomes much more evil and competent than Zim himself, including deciding that Zim is a threat to the mission and needs to be eliminated. Long story short, Zim just barely turns him back to normal in time to prevent a Klingon Promotion.
  • Blue-and-Orange Morality: We have absolutely no idea why he does anything he does, and if we could look into his thought processes, our brains would a-splode.
  • Big Eater: He's very gluttonous, eating lots of waffles and tacos mostly. He also comes off as a messy eater due to how fast he eats.
  • Bumbling Sidekick: He is Zim's incompetent lackey.
  • Catchphrase:
    • "TAACOOOS!"
    • "Okie dokie!"
    • "Ooooooo..."
  • Chaotic Stupid: Even more than Zim, due to his utter lack of reasoning capabilities or self-restraint.
  • Chick Magnet: Was seen dancing with a bunch of girls at a club, then dropped off at the house hours later by his new friends.
  • Children Are Innocent: How "innocent" is highly debatable but GIR essentially has the mind of a small child who doesn't fully comprehend the magnitude of his actions.
  • Cloudcuckoolander: However, Jhonen has gone on record to say that humor involving GIR isn't random as it's all rooted by the fact that the robot's brain is literally junk.
  • Color-Coded for Your Convenience: Blue/green = regular GIR. Red = duty mode.
  • Cranium Compartment: He can open the top of his head and uses the space within to store items. As his behaviour demonstrates, his CPU doesn't take up much space at all in there.
  • Crouching Moron, Hidden Badass: His duty mode proves this without a doubt, especially in "GIR Goes Crazy and Stuff". Not to mention that he managed to Take Over the World all on his own in an unfinished episode.
  • Cuckoosnarker: During his moments of clarity, GIR can be pretty snarky towards Zim.
    Zim: You now possess superior geographic guidance abilities, GIR.
    GIR: Finally.
  • Cuddle Bug: "Aww, somebody needs a hug!"
  • Cute, but Cacophonic: GIR is undeniably cuddly looking and has a loud, high pitched scream when he's upset.
  • Curtains Match the Window: Well, not quite — his eyes are the same color as the lightbulb on the antenna on the top of his head.
  • Death Glare: When delivering his "The Reason You Suck" Speech to Zim in duty mode in "GIR Goes Crazy and Stuff".
  • The Ditz: He is amazingly ditzy. He often heads into Cloudcuckoolander territory, depending on the local humidity and/or piggy count.
  • The Dragon: SIR units as a whole fulfill this purpose for their masters, and GIR, being Zim's robotic sidekick, fulfills the same role... just with much less effectiveness than the standard model. When Minimoose comes aboard, he and GIR share the role.
  • Dumbass Has a Point: More often than you would expect. It's not uncommon for him to pick up the Smart Ball when no one else is around to be Zim's Straight Man.
    • When Zim gets freaked out about a baby spotting them note , GIR says this:
      GIR: Dib's seen us before. And he knows where we live.
    • He gets another moment in "Walk For Your Lives." When Zim decides to cancel out the stasis field slowing down a city-busting explosion, not taking into account that said explosion will still annihilate his base and the entire city, GIR of all people insists to Zim that going through with this plan is not a good idea.
    • In the movie, Zim tries to pull a You Didn't See That, only for GIR to say "YES THEY DID."
  • Dumb Is Good: invoked Subverted; GIR's impulsive stupidity leaves him with little regard for others' safety, and he causes destruction for entertainment on a whim. Note that portraying him as "good" was never the intent, but the fandom picked it up and ran with it. GIR is often misconstrued as a harmless or even compassionate character rather than a merely stupid one. "GIR Goes Crazy and Stuff" was in part a measure dedicated to correcting that; without his mental issues distracting him, it turns out he's naturally as cold and evil as any other SIR unit.
  • Easter Egg: The infamous "Bloody Gir" (an image of GIR in duty mode and covered in blood), hidden as a Take That! against the network for not allowing the image into a scene.
  • Eating Optional: Being a robot, GIR doesn't need to eat, but he does anyway out of enjoyment of Earth food.
  • Eating Machine: He loves to eat, mainly waffles and tacos. And burritos...and chicken...and pretty much everything else.
  • Extreme Omnivore:
    • To name a few... A live chicken, tacos, burritos, taquitos, cupcakes, waffles made outta peanuts and soap, a fish (or tried to), pizza, Acne Blast acne cream, puppies (maybe)...
    • In the first issue of the comic, GIR claims to have eaten a baby. This joke is repeated verbatim in Enter the Florpus.
      GIR: I ate a baby there!
      Zim: He did.
  • Floating Limbs: His metal legs. Averted in the toys, where his legs are attached to his body.
  • The Glomp: He loves anything cute and especially clings to Zim more than once.
  • Genius Loci: In "Invasion of the Idiot Dog Brain", his brain is accidentally uploaded into the central hub of Zim's house, allowing him to control it and eventually turn it into a Humongous Mecha.
  • Hanlon's Razor: Well, he actually never has an malicious intent whenever he does help Zim, but in duty mode...oh boy, is this trope ever averted.
  • Head Pet: He rides on Zim's head in a few episodes such as "Battle of the Planets" and "Attack of the Saucer Morons". In "Tak, the Hideous New Girl", he uses Dib's head instead.
  • Heh Heh, You Said "X":
    Zim: I'm going to attempt to lock you into duty mode with this behavioral modulator.
    (GIR giggles)
    Zim: What?
    GIR: Doody.
  • Hidden Depths: The sentence "Do anything is real?" can be seen among his childish scribbles along the walls of Zim's house in Enter the Florpus, implying that he possesses an understanding of existentialism that we otherwise get no insight into.
  • Hyper-Competent Sidekick: In duty mode. Unfortunately for Zim, that usually only lasts for a few seconds. Although non-duty mode GIR has moments of surprising clarity that Zim repeatedly fails to pay any heed, like in "Bad, Bad Rubber Piggy". The best example of this would be the time he tried to point out to Zim that speeding up a slowed down explosion (It Makes Sense in Context) would be a bad thing.
  • Keet: His electronic robot voice coupled with his bizarre enthusiasm for everything makes him a very notable example.
  • Klingons Love Shakespeare: He loves watching human TV programs, especially the Scary Monkey show. This causes some trouble in "Parent-Teacher Night" when Zim puts him in charge of making sure the Roboparents absorb information from a videotape of human parents' behavior towards their children, but GIR changes the channel to a bunch of random shows and commercials instead. Hilarity Ensues.
  • Lethal Chef: In "Zim Eats Waffles", he makes waffles and begs Zim to eat them. Zim enjoys them until GIR reveals that the waffles contain peanuts and soap.
    Zim: GIR! Your waffles have sickened me! Fetch me the bucket!
  • Lethally Stupid: Especially in "Invasion of The Idiot Dog Brain".
  • Makes Just as Much Sense in Context: EVERYTHING ABOUT HIM.
  • The Millstone: If it isn't Zim himself or Dib who foil his plans, it's usually Gir who does.
  • Minion with an F in Evil: Sometimes; in particular he holds no malice toward Dib (or anyone, usually) and helps him on occasion.
  • Morality Pet: Slightly. Although GIR doesn't actually do anything to curb Zim's villainous actions, the little robot appears to be one of the few individuals Zim actually (somewhat) cares for.
  • Not Afraid to Die: His reactions to impending doom can be downright gleeful, and he's even expressed disappointment at avoiding it. Doesn't quite cross the line into Death Seeker territory, though.
    GIR: Aww. I wanted to explode.
  • Not So Harmless: Jhonen has gone so far as to describe him as an "amoral baby monster" who has a tenuous grasp on reality due to how he was made.
  • Ocular Gushers: Whenever he cries, expect bigass streams of tears to come flowing from his eyes.
  • Odd Friendship: With Zim, his leader and boss. Zim's a megalomaniacal, egotistical world conqueror while GIR's a ditzy, cheerful Cloudcuckoolander, but they seem to get along fine for the most part.
  • Paper-Thin Disguise: His dog disguise isn't much better than Zim's own "human" disguise, up to and including the prominent zipper.
  • Person of Mass Destruction: In Invasion of the Idiot Dog Brain.
  • Pintsized Powerhouse: In duty mode, he can put up an impressive fight in spite of his small size. Occasionally in his "normal" mode as well. In "Megadoomer" he was able to carry a contact five times his size without any troubled effort.
  • Plucky Comic Relief: While most of the cast is comedic to some extent, GIR's Cloudcuckoolander tendencies, Blue-and-Orange Morality and endless supply of non-sequiturs land him squarely in this category.
  • Punch-Clock Villain: He only does what Zim says because he is his servant. Not that he often does what is asked of him, anyway.
  • Ridiculously Human Robots: For some reason, he enjoys eating food, watching TV, consistently demonstrates emotions, and is even able to cry. And then, of course, there's the fact that his constantly malfunctioning A.I seems to be suffering from schizoaffective disorder.
  • Robot Kid: Although not intended as such in-universe, GIR's personality strongly resembles that of a hyperactive small child.
  • Sensitive Guy and Manly Man: The Sensitive Guy to Zim's Manly Man.
  • Servile Snarker: He's not always making remarks at Zim's expense, but can be this during his moments of clarity. Not to mention when he's in duty mode.
  • Stepford Smiler: If one is to take Word of God in the commentary of "Bestest Friends" literally, "GIR hates life and he wants to die", which would make him Type A. His glee at being ordered to self-destruct in "Dib's Wonderful Life Of Doom" seems to back this up, as does his admission in "GIR Goes Crazy And Stuff" that he despised being Zim's servant even when he was his normal self. According to his voice actor, GIR's usual behavior is the result of him being a broken unit and "duty mode" GIR is the real deal trapped in an And I Must Scream scenario.
  • Stylistic Suck: When Zim enters GIR's mind during the comic's Virooz arc, it greatly resembles the Grid from TRON, but it's a deranged and largely broken version of it.
  • Suicide as Comedy: In "Dib's Wonderful Life of Doom", GIR shrieks a delighted "FINALLY!" upon being ordered to self-destruct. An early draft of the script made it more explicit by having GIR shout "SWEET RELEASE!" instead.
  • Talkative Loon: A lot of what he says are complete non sequiturs to show just how bonkers and ditzy he is.
  • Tantrum Throwing: Having the mind of a small child, GIR will sometimes do this when Zim does something he doesn't want. When Zim returned a DVD to the rental store, GIR ran around in circles screaming and crying for about five seconds before randomly falling asleep on the living room floor.
  • Temporary Bulk Change: The metal he's made of is apparently very flexible because he grew to a massive size in "Halloween Spectacular of Spooky Doom" from eating the candy stolen from a bunch of trick-or-treaters.
  • Too Dumb to Fool: Possibly why Tak's Mind Control doesn't work on him.
  • Trademark Favorite Food: He loves tacos, pizza and waffles.
  • Transformation Sequence: The first time he assumes dog form, he leaps into the air, poses amid a field of spinning bones, lets out a slow howl, and lands, picking up his costume and zipping it on snugly.
  • Undying Loyalty: For all the time he spends goofing off, he still sticks by Zim the way a loyal pet does for his owner. Even when not in Duty Mode, he's come to Zim's rescue on a few occasions.
  • Wild Card: There's no way of knowing what he'll end up doing in any given circumstances, making him serve as a regular Spanner in the Works for Zim's plans.
  • Wolverine Publicity: Good god. If we had a dollar for every individual piece of merchandise that featured GIR in his dog suit, we'd have enough money to bribe Nickelodeon into uncanceling Invader Zim.
  • You Don't Look Like You: In the toys that feature Robot!GIR, his legs are connected to his torso instead of floating apart from it, for obvious reasons.

Duty Mode GIR

When in "duty mode", GIR switches to a completely different personality: highly intelligent, calculating, and efficient, even moreso than Zim.

  • A.I. Is a Crapshoot: While GIR's usual level of helpfulness is questionable at best, when Zim temporarily locks him into hyper-competent Duty Mode, GIR decides that Zim himself is a threat to the mission and decides to take over.
  • And I Must Scream: According to Rikki Simons, there is a perfectly competent "inner-GIR" desperately wanting to fix the outer "broken GIR" in order to get out and/or gain control of himself.
  • Ax-Crazy: In duty mode, he takes his invasion job very seriously and will not hesitate to do away with anyone who serves as an impediment toward the Irken cause.
  • Catchphrase: "Yes, sir!" or, "Yes, my master!"
  • Cute and Psycho: In "GIR Goes Crazy and Stuff", this adorable robot becomes psychotic.
  • A Day in the Limelight: Most episodes only have him show up for a few seconds, but his biggest role is in "GIR Goes Crazy and Stuff".
  • Evil Sounds Deep: His voice noticeably deepens, which is also the state where he is at his most transparently evil.
  • Flat Joy: This line in "GIR Goes Crazy and Stuff":
    Duty!GIR: Blend in with the indigenous life, analyze their weaknesses, prepare the planet for the coming badness. Yay.
  • Gone Horribly Right: In "GIR Goes Crazy and Stuff", Zim gets tired of GIR's incompetence screwing up his evil plans and uses a behavioral modulator to lock him into duty mode, making him smarter. GIR becomes smarter, smart that he becomes more competent than Zim, and then concludes that Zim's incompetence is a threat to the mission and decides to "terminate" him.
  • Killer Robot: In this mode, he becomes psychotic and violent.
  • "The Reason You Suck" Speech: Delivers one to Zim in "GIR Goes Crazy and Stuff".
    GIR: You are no commander! You are a threat to the mission! Your intelligence is stupid! Your methods are stupid! Your progress has been stupid! Your intelligence is stupid! For the sake of the mission, you must be terminated!
  • Red Eyes, Take Warning: This GIR has glowing red eyes and is much more dangerous than his normal self, since he has a completely functioning brain and is dedicated to completing his mission of taking over Earth.
  • Robotic Psychopath: GIR is one of the few cases where A.I. Is a Crapshoot is a good thing. In just the ditzy sense, he is always this, but in the Ax-Crazy sense he's this in duty mode. Zim learnt this the hard way when he locked him into duty mode...
  • The Starscream: In GIR Goes Crazy and Stuff, a newly hyper-competent GIR decides that Zim's stupidity is a threat to their mission and attempts to correct the problem by terminating his master. Especially since the episode was made in attempt to show fans that he isn't supposed to be good-natured.
  • Super-Persistent Predator: When he decides Zim is a threat to the mission, he'll stop at nothing to hunt him down and kill him. He's only stopped by being turned back into his normal goofy self.
  • Superpowered Evil Side: GIR's Duty Mode briefly becomes this when Zim locks him into it.
  • Twitchy Eye: When locked into duty mode permanently, and Zim leaves the room, you can clearly see his twitching.

Voiced by: Jhonen Vasquez


A floating, purple, noseless moose who's Zim's second sidekick. Originally envisioned as Zim's ultimate tool of destruction, whom he created to replace GIR, since the series was cancelled before his debut episode could be finished, he was instead simply retconned as being with Zim "the entire time." Minimoose's actual power is finally showcased in Enter the Florpus where he ends up being crucial to Zim's evil plan.

  • Co-Dragons: With GIR as Zim's henchmen.
  • Easily Forgiven: In Enter the Florpus, Zim blames Minimoose for his plan's failure. After a short squeak, Zim just laughs it off and says he can't stay mad at him.
  • Intelligible Unintelligible: Even though Minimoose only articulates in squeaks, Zim and others are able to understand him quite clearly.
  • Last Episode, New Character: Minimoose was introduced in the final episode of the show The Most Horrible X-mas Ever. He was originally intended to be introduced in the episode Nubs of Doom, which would show his actual origins, but after Nickelodeon cancelled the show, they only allowed the animation team the choice to finish one episode and they went with the Christmas special.
  • MacGuffin Super Person: Minimoose is the only being in the known universe with the ability to harness enough cosmic energy to teleport Earth through schmillions of miles through space into the direct path of the Tallests' flagship. This also means getting Minimoose away from Zim is the only way Dib, Gaz and Professor Membrane can teleport Earth back before it's destroyed by the Florpus Hole.
  • Puzzle Boss: The most literal example ever, since activating him to save the day basically involved solving a moose-shaped Rubik's Cube.
  • Psychic Powers: He's always levitating and displays some telekinetic powers in Enter the Florpus.
  • Remember the New Guy?: Lampshaded and Played for Laughs. When someone Zim's abducted asks what Minimoose is, Zim just introduces him as Minimoose and says he's been there "the entire time". The crew was originally going to go a step further and crudely insert Minimoose into scenes from earlier episodes but they didn't have enough time.
  • Ridiculously Cute Critter: It may be a weapon of mass destruction, but it's an adorable one!
  • Team Pet: More-or-less serves as this for Zim, and yet he still manages to be more useful than GIR.

Voiced by: Mo Collins (Robomom), Michael McDonald (Robodad)

"Welcome home, son!"

Two poorly-made robot decoys that pose as Zim's "parents" in order to further his disguise as a human child.

  • A.I. Is a Crapshoot: Their programming is terrible and causes them to malfunction constantly, doing all manner of bizarre things. Luckily for Zim, he can get away with it because nobody in-universe is smart enough to notice that they're not humans. The series bible actually semi-justifies this by saying that their sole function is to be seen for a few seconds from a distance when they greet Zim when he arrives home, and aren't programmed to be capable of doing much else.
  • Anime Hair: Robomom has an odd hairstyle that vaguely resembles the wig Zim wears in his human disguise.
  • The Cameo: They appear briefly in Enter the Florpus.
  • A Day in the Limelight: "Parent Teacher Night" is the closest to this during the seires proper. The cancelled episode "Roboparents Gone Wild!" would have also been one for them.
  • Large Ham: Robodad hams it up in "Parent Teacher Night".
    Robodad: (after his arm pops off) That was my squeezing arm! THEY TOOK MY SQUEEZING ARM! WHY MY SQUEEZING ARM??? (screams)
  • Lethal Chef: Robomom's idea of "dinner" is to dump a sack of flour on Zim's head.
  • Noisy Robots: They can be heard whirring whenever they move.
  • Ridiculously Human Robots: Parodied. Despite them having facial stitches, metal claw-like arms, and wheels for feet, no one in-universe can tell that they're not human. Even when Robodad's arm falls off and starts giving off electric sparks, Zim is able to explain it away by saying, "My dad lost his arm in, uh...the war!"
  • Standard '50s Father: Robodad is a riff on this trope, complete with glasses and smoking pipe.

Voiced by: Jhonen Vasquez

"Something is happening at the front door. Something... horrible!"

The Artificial Intelligence that runs Zim's base. Thoroughly sarcastic and perpetually bored with having to serve his master's whims, and was once possessed by GIR for several months.

  • Adaptational Jerkass: In both the comics and Enter the Florpus, the Computer is considerably more caustic and bitingly sarcastic towards its master than it was in the TV series.
  • Brief Accent Imitation: It briefly puts on a British accent in Enter the Florpus when it's sassing back to Zim and pretending to sound like a butler.
  • invoked Critical Research Failure: Parodied in "FBI Warning of Doom," where it Ass Pulls like a madman as to gain more "educated guesses" regarding the FBI for Zim based on insufficient data.
  • Deadpan Snarker: Quite possibly the most sarcastic character in the entire franchise.
  • Even Evil Has Standards: As shown in its above quote, it found the Roboparents' rampage during "Backseat Drivers From Beyond the Stars" to be horrifying.
  • The Evil Genius: It's typically the one to actually conduct necessary experiments involving Zim's mission, and also has Super Intelligence by virtue of being a highly advanced supercomputer.
  • Faux Affably Evil: It can put on more of a polite facade than Zim can, but is still just as dedicated to the extermination/enslavement of mankind.
  • Genius Loci: An insanely advanced AI that runs Zim's Elaborate Underground Base.
  • Large Ham: Often prone to Suddenly SHOUTING! when doing mundane tasks.
  • Manchild: Childishly shouts back "I DON'T WANT TO!" when Zim asks it to laugh with him during his Evil Laugh.
  • Mission Control: Typically serves as this for Zim when he's engaging in certain tasks that take him far away from his base.
  • Normal Fish in a Tiny Pond: It's stated several times that the Computer AI and Zim's base as a whole are very impressive when compared to the rest of Earth, but they're actually super-outdated by Irken standards, to the point where in Issue 39 of the comic, Tak's Ship and not Zim's base is described as being the most advanced piece of technology on the entire planet.
  • Only Sane Man: Generally stands out as the most rational member of Zim's crew. It, Dib, and even GIR are the ones to point out how thoroughly idiotic Zim's solution to the slowed-down explosion in "Walk For Your Lives" is.
  • Ridiculously Human Robots: Parodied. Despite being a bodiless AI, it's highly emotional and even coughs at one point (much to Zim's own confusion).
  • Servile Snarker: While it loyally serves Zim, it often showcases a rather dry wit and snarks back at his more insane orders.
  • With Catlike Tread: Played for Laughs in Enter the Florpus, with it gaining the necessary power to figure out The Massive's flight path by violently shooting cables into any power source in the surrounding neighborhood, draining power from the whole city while screaming "SNEAKING!" at the top of its nonexistent lungs.


Membrane Family

    In General 
  • Art Evolution: Their designs were updated for Enter the Florpus. Among other things, their skin color is slightly darker, in line with the Word of God that they're Mexican.
    • Dib's eyes are smaller and farther apart, he now has actual eyebrows, and the sides and back of his head are no longer shaved. His Badass Longcoat has been made slightly shorter and his neutral face shirt is also swapped out for one with a picture of a ghost on it.
    • Gaz's hair is a slightly lighter color, has more rounded edges, and covers more of her forehead. She also swaps out her black dress, pink tights and skull pendant for a blue shirt with a pixellated alien on it and a skirt.
    • Professor Membrane becomes more broad-shouldered and angular, but otherwise looks mostly the same.
  • Badass Family: Get upgraded to one in Enter the Florpus, when they end up saving the Earth from being destroyed by Zim and the Tallests.
  • Big, Screwed-Up Family: The Membranes consist of one wacky scientist and his two children (who are mostly raised by robots), a big-headed paranormal investigator and a sarcastic, aggressive gamer girl with unexplained supernatural powers.
  • Large Ham: Particularly Professor Membrane, but even Gaz can get melodramatic when the mood calls for it.
  • Missing Mom: Professor Membrane's wife / Dib's and Gaz's mother has never been seen or mentioned. According to Word of God, Membrane keeps her remains in a jar.
  • Only Sane Man: The Membranes are some of the only characters on the show with anything resembling smarts or common sense, in a world where literally everyone else is so stupid that they can be fooled into thinking Zim is a human with just a wig and a pair of contacts. That said, all three of them regularly display mentally-unstable behavior themselves, so their sanity is only relative.
  • Weirdness Magnet: The Membrane family runs into a lot of alien- and paranormal- related disasters, most of them caused by Dib's obsession with hunting Zim and his fascination with anything supernatural.

    Dib Membrane
Voiced by: Andy Berman

"My problem is that the human race seems to want to be destroyed!"

A 12-year-old (as of Enter the Florpus) self-styled "paranormal investigator", and one of only two people on Earth (the other being his sister Gaz) to realize Zim's extraterrestrial origin. Dib's goal is to expose paranormal phenomena to the rest of the world, especially his father. However he is regarded as a loon by pretty much everyone, and essentially treated like crap by the very people whose lives he's trying to save. Nonetheless, while he means well, he's fairly ruthless (at times bordering on sadistic) when it comes to dealing with Zim, making them Mirror Characters to each other.

  • Affectionate Nickname: Referred to as "Son" by his father, Professor Membrane. This doesn't sound like any special nickname, until one realizes that Membrane only referred to Gaz as "Daughter" once, and refers to her as Gaz every other time.
  • Agent Mulder: Dib tends to come across as a desperate Agent Mulder making all number of bizarre claims, but it becomes apparent in later episodes that he's actually fairly rational and even skeptical. His problem is other people's stupidity and/or apathy, plus his horrible luck in losing his proof at the worst possible moment, every single time.
  • All of the Other Reindeer: Like Zim, he's extremely disliked in skool, presumably for his "insane" outbursts. He's even unpopular and disliked among his fellow paranormal investigators in the Swollen Eyeball Network.
  • Ambition Is Evil: While clearly not evil, Dib is shown to have high hopes and dreams for his future, which occasionally motivates him in his more sadistic moments.
  • Anime Hair: Shaped like a scythe. And according to "Dib's Wonderful Life of Doom," it gets more and more extreme as he ages.
  • Anti-Hero: Initially, a Nominal Hero. He may be trying to save the world, but he's only doing it for himself. Over time, he becomes a Pragmatic Hero as it becomes a little clearer that Dib is actually genuinely good, seeing as he is willing to put his ego aside in order to save people he hates. Also, his speech in the Christmas Special shows he really does care. Still, he can be a little brutal when dealing with Zim.
  • Arbitrary Skepticism: He believes in aliens and ghosts and Sasquatches and regularly goes to school with a poorly-disguised alien from outer space...but the one thing he doesn't believe in is a giant Lice Queen that lives underground and is the source of all head lice in the world. Because the universe hates him, he's proven wrong at the end of the episode.
  • Arch-Enemy: He is the main threat to Zim's goal of conquering Earth.
  • Artificial Human: In the DVD commentary, Eric Truehart says he wanted this to be a reveal later on in the series, had the show not been cancelled. Whether or not this is still considered canon with the release of Enter the Florpus is up in the air.
  • Badass Bookworm: A smart kid who can be tough in a pinch.
  • Badass Longcoat: He wears a black trench coat. Jhonen Vasquez's decision to have him in this attire caused some controversy before the show's premier. note  In the movie, Dib claims he wears it because it makes him look mysterious, though his sister is unimpressed with this claim. Humorously, the comics reveal that he wears it to bed, over his pajamas.
  • Badass Normal: In "NanoZim," he hangs upside down from the ceiling, does a series of ninja backflips to evade the security system of Zim's house, and escapes without a scratch.
  • Batman Can Breathe in Space: "Dib's Wonderful Life of Doom". Subverted at the very end when the sequence was revealed to be part of a Lotus-Eater Machine.
  • Being Good Sucks: Doesn't matter how many times he saves the day (or at least tries to), he'll almost never get credit for it and often will end up having something bad happen to him for his efforts. Though to be fair, bad things happen to him even when he's being selfish.
    • Gets played to the extreme in the comics: Dib still is not able to garner respect even after successfully defeating and capturing Zim, leading to the creation of the Half-Human Hybrid, Apocalypse How bringing abomination known as Zib.
  • Big Brother Instinct: Is protective towards his sister Gaz... sometimes. Other times he's perfectly willing to use her as a guinea pig when it benefits him.
  • The Bore: His tendency to act as the show's resident rambling Mr. Exposition has made it so that he even bores himself at times.
  • Buffy Speak: Quite often—"I'll be there, DOING STUFF!" and the meme-tastic "Things he do!" "Score one for the human race! Score zero for the...Zim...thingy...race."
  • Butt-Monkey: Dib is the butt of everyone's jokes, due to his perceived insanity regarding the paranormal (as well as the size of his head). An interesting example as he is the show's designated protagonist. His father is generally absent, using the little time he has with Dib to bemoan his "insanity" and pressure him to study "real science"; his younger sister, Gaz, is eternally unsympathetic to him and often turns horribly violent if Dib, for example, takes her last piece of pizza or talks too much. One could say the Halloween episode "Halloween Spectacular of Spooky Doom" quite literally "put him through Hell." (In a twist, by the end of the episode he was the only character who wasn't injured).
  • Calling the Old Man Out: At the beginning of the movie, Dib gets fed up with his father's blind disbelief in the supernatural, and decides to show him the proof he's been keeping in the garage. When Professor Membrane is still skeptical, Dib tells him that he's used to people not believing him but he wishes, just once, that his dad would have his back before angrily storming away.
  • The Cassandra: Arguably Dib's strongest character trait is that he constantly talks about things that are true, but nobody believes him. In Halloweenies, he explains to the psychiatric counselors that he's not crazy, he's slipping between dimensions because he used his father's inter-dimensional viewing device. Even the fact his father is right there and confirms that such a device exists doesn't keep the counselors from shipping him off to an insane asylum.
  • Catchphrase: "You jerk." Often said to Zim or any other character who seriously messes things up for Dib, usually at the end of the episode.
  • Character Development:
    • Arguably more than any other character in the series. He starts off as something of a Knight Templar, but by the end of the series has definitely become its primary Straight Man.
    • Inverted by the time of the comics, his increased paranoia due to Zim's multi-year disappearance has eroded his Straight Man tendencies somewhat and amped up his Jerkassery to almost start-of-series levels.
  • Charles Atlas Superpower: Despite apparently being a normal human, he has accomplished superhuman feats, such as destroying a brick wall using only a briefcase.
  • Child Prodigy: He could spell the word "aliens" when he was still in diapers, and by the time of the show can hack extraterrestrial technology.
  • The Cloudcuckoolander Was Right: There's a good chance that most, if not all of what he says is completely true. Unfortunately, the stuff that's true is so bizarre that it makes him into The Cassandra.
  • Collector of the Strange: Haunted gummy bears and magical "spell drives", among other things.
  • Conspiracy Theorist: Though he's often right, and is often contrasted with even more insane and deluded conspiracy nuts.
  • Crossdressing Voices: In the Japanese dub, he is voiced by Ayumi Kida.
  • Crying Wolf: He has the reputation of making bizarre and unverifiable claims (see Noodle Incident below), although it's quite possible he was right about those too. It doesn't help his case, though.
  • Deadpan Snarker: Not quite to his sister's level, but he definitely has his moments.
    Dib: How did you pass the verbal portion of the exam?
  • Demonic Possession: He would have been on the receiving end of it (sort of) in "Ten Minutes to Doom".
  • Depending on the Writer: Whether he's capable of ninja-like feats of physical spectacle or an uncoordinated nerd tends to vary depending on the episode.
  • Determinator: By necessity. No matter how much everyone mocks him and abuses him, he will not give up his quest to save the Earth from Zim.
  • Deuteragonist: To Zim, of the opposing kind.
  • Disney Death: In "Bad, Bad Rubber Piggy."
  • Earn Your Happy Ending: Enter the Florpus has him gain his family's love and save both the Earth from Zim and the universe from the Irken Empire. With that said, his father still refuses to believe that aliens exist and Zim is still around to cause trouble, so things in all likelihood won't be much different for him going forward.
  • Eerie Pale-Skinned Brunette: A male example. He's seen as weird by other characters, and has pale skin and dark hair.
  • Enraged by Idiocy: Humanity's inability to see past Zim's blatant disguise frustrates him to no end. This ultimately reaches a breaking point in the episode "The Frycook What Came from All That Space". Where after his classmates once again dismiss a credible piece of evidence, he has a flat-out mental breakdown.
  • Eye Glasses: The lenses even disappear as he closes his eyes. His glasses also have wire-thin frames and no earpieces. Some fans didn't even realize he wore glasses until Zim mentioned it, at which point we suddenly realized what that narrow line connecting Dib's eyes was supposed to be.
  • Failure Hero: It's very rare for episodes to actually end with Dib successfully stopping Zim on his own; with Zim's inevitable defeat usually coming about as a result of either his own incompetence or the interference of a third party (usually Gaz or GIR). In fact, Dib usually suffers an even worse fate than Zim does when all's said and done.
  • Fatal Flaw: His need for acknowledgement. Time and time again, Dib's desire for attention for his deeds and discoveries blinds him to very obvious dangers that his common sense would otherwise steer him away from. This is shown most damningly in Enter The Florpus when Zim manages to play on his severe "Well Done, Son!" Guy trait, allowing the former to take over Membrane Labs and later on the Earth itself.
    • invoked Word of God says that Dib genuinely is a good person...but one that needs everyone else to know how good of a person he is.
    • Enter the Florpus seems to elaborate and explain on this: Dib's underlying desire is for his father to be proud of him, despite Dib following a ... different path than him. Given how much of an absent parent Professor Membrane is along with the rocky relationship he has with Gaz, it becomes obvious that his need for acknowledgement of his efforts came as a result of parental neglect. He wanted someone to acknowledge his efforts he puts into his goals and validate his decision; given how Membrane doesn't understand and how Gaz doesn't care, it explains why he acts as such with the rest of the world. Fittingly, the film has Professor Membrane tell his son that he's always proud of him and even Gaz admits that she respects Dib in her own way, namely that the reason she's rough with him is because she knows he can take it.
  • Flanderization: Notably a deliberate example of this happening. Partway through the first season, a movement known as "God Save the Dib" was started by the show's writing staff, who felt that Dib came across as boring and whiny in the early episodes, to make him more comedic and appealing. As a result, later episodes, while never dropping his status as the show's de facto Only Sane Man, feature plenty more moments of him acting like a wacky idiot, along with a much greater amount of Lampshade Hanging about his status as the resident dull Mr. Exposition.
  • Foil: To Zim. Both are single-mindedly driven and emotionally volatile egoists whose antics have made them outcasts among their peers, causing them to become fixated on accomplishing a goal of very little real importance for the sake of gaining the recognition that they believe themselves to be deserving of. While Zim's actions are completely governed by his warped sense of self-importance, though, Dib is occasionally able to look past his own selfishness and do genuine good for the sake of it, which has also given him a slightly greater amount of self-awareness.
  • Forehead of Doom: In addition to his large head, he also has a wide forehead. On the animation project "God Save The Dib", a note next to his character model reads "Lots of forehead! Forehead good!"
  • Friendless Background: He doesn't appear to have any friends, though whether or not he minds this seems to vary. The episode "Vindicated!" has him jump at the chance to have a partner in the form of Mr. Dwicky, the Skool counselor. In the unfinished episode "Return of Keef", however, he is apathetic to and even irritated by Keef's attempts to be his friend (though to be fair, Keef was annoying and trying to get him to give up on the paranormal), and only decides to hang out with him as part of a plan to lure Zim in. In Issue #8 of the comics, Dib mocks the idea of having an investigative partner, and abandons Groyna (the girl he's on a mission with) as soon as she's no longer of use to him.
    • That said, it's clear in many episodes that the lack of support from others takes a toll on him. Getting rather depressed when he finds out Mr. Dwicky never actually believed him, contemplating letting himself be destroyed along with his class when they make it absolutely clear how much they hate him, and so on. His constant pestering of his sister can be interpretted as him trying to have at least one person to turn to.
  • The Friend Nobody Likes: He's this to the Swollen Eyeball Network, where he's unpopular and disliked even among his fellow paranormal investigators (partially due to terrible luck on his part causing him to accidentally waste their time on multiple occasions), though a couple of them do help him out on occasion.
  • Goal in Life: To prove to the world that Zim is an alien.
  • Good Is Not Nice: Particularly early on. While he's generally motivated by heroic reasons, he has a tendency to be arrogant, cocky and even cruel while pursuing what he believes to be paranormal threats, and shows downright glee at the thought of being able to perform an autopsy on Zim. He loses a bit of that as the show goes on, though.
  • Hero Antagonist: A paranormal investigator trying to prevent the alien Zim from taking over the world, there are numerous Villain Episodes where Dib is the main character, making him the protagonist (and usually casting Zim as the antagonist) a good portion of the time.
  • Hero with Bad Publicity: In spades. The few people who tolerate him enough to hear him out usually can only do so for a short while before blowing him off as an obnoxious maniac.
  • Heroic Self-Deprecation: An interesting ZigZagging example. Dib is generally too full of himself to care about how others perceive him, but on the occasions where he is made to interact with an externalized version of himself in some form he almost always ends up finding himself to be just as unbearable as everyone else does. Notably, "Dibship Rising" ends with a ship programmed to have his personality and memories killing itself after realizing how much of a loser it was.
  • Hikikomori: Becomes this during the Time Skip between The Most Horrible X-Mas Ever and Enter the Florpus. He didn't leave his room until Zim returned, which was what Zim was counting on as Dib had let himself go tremendously, becoming fat, unhygienic and fused to his chair. Zim goes so far as to call him a "sad chair".
    "Sat too long... Chair... Fused to butt! More chair than man now!"
  • Hilariously Abusive Childhood: His family doesn't like him much, his teacher and classmates openly ridicule him and it's common for him to be subjected to a Fate Worse than Death by an episode's end.
  • I Take Offense to That Last One!
    Zim: Despite his large head, the Dib-monkey is quite stupid.
  • Idiot Hair: His hair is always styled into a massive pointy scythe shape.
  • Informed Deformity: His supposedly big head, considering that it's no larger than everyone else's heads.
    "My head's not big!"
    • In Enter the Florpus, Dib's head is depicted as incredibly swollen and massive when he appears on TV during Zim's Peace Day broadcast, so perhaps the insults are more accurate than they seem to be.
  • Insufferable Genius: He's typically one of the most intelligent and rational characters of the show but he's a stubborn egotist.
  • Intelligence Equals Isolation: His classmates go out of their way to avoid him and are sadistically vicious when they do have to acknowledge him. Given he was shown in Bad, Bad Rubber Piggy to have harassed and stalked a hairy kid under the assumption that he was a Bigfoot (though in Dib's defense, in all likelihood he is), there's probably a reason his social situation turned out this way.
  • Iron Butt Monkey: He has taken a lot of damage. He's been killed at least once, had his whole childhood ruined in horrible pig-related accidents, turned into bologna, turned inside out while having a hole ripped in his head...
  • It's All About Me: This is what more often than not sets off Gaz's revenge schemes on him, as he misinterprets her actions as helping him or he assumes that she's okay with dropping whatever she's doing to see what insignificant thing he's caught Zim doing. This specifically kicks off her sabotaging him at every turn in the episode "Battle-Dib" by snatching the slice of pizza she was about to eat and the entire events of Issue #5 by shutting off her online game to show her footage of Zim yelling at a cat.
    • This may explain why he has a poor social standing among his peers, or at least part of it. He rarely shows interest in the hobbies or interests of others, notably Gaz's own.
  • Jerk with a Heart of Gold: Dib is generally smug, arrogant and selfish, and has a bad tendency of dipping into extremism during his pursuits of the paranormal, but he's at heart a decent guy who usually shows empathy when it counts.
  • Kid Hero: The defender of the Earth is a twelve-year-old.
  • The Klutz: He can display some impressive moves in the middle of a battle, yet tends to trip over and bump into things in normal situations.
  • Large Ham: Dib really likes to play up the epicness of his feud with Zim in order to make it seem as dramatic and important as possible, and can be just as loud as Zim is as a result. That said, he's also much better than most of the rest of the cast is at reining it in when the situation calls for it.
  • Leitmotif: A violin, which goes with Gaz's harpsichord.
  • Let's Get Dangerous!: Briefly sheds his Butt-Monkey status several times, one of the most noteworthy being "Battle of the Planets."
  • Like Father, Unlike Son: His dad is a globally-beloved super scientist who scoffs at the notion of the paranormal even existing whereas he's a social outcast who uses his scientific knowledge exclusively to pursue the paranormal.
  • Loners Are Freaks: Only seems to initiate interactions with others either to rant at them about paranormal creatures or accuse them of being paranormal creatures, which has caused him to be deemed a weirdo and have no friends at Skool. While he's partially driven by his desire for recognition from others, he does not appear to have any real interest in making friends, and in fact shows immediate annoyance when Keef attempts to befriend him in "Return of Keef".
  • Lovable Nerd: He's a hyperactive nerd obsessed with the paranormal who is constantly bullied by his classmates and sister, is tragically misunderstood by his dad due to not sharing his dedication to "real science", and is perpetually at odds with Zim due to the whole "trying to take over Earth" thing. He is also easily one of the smartest and morally upright characters in the shownote , and despite his Blood Knight levels of obsession with taking Zim down, he genuinely has the best interests of Earth and its people at heart, even tanking a massive blow to his pride just to save his classmates from one of Zim's schemes.
  • Meaningful Name: Though likely unintentional, Dib is an Arabic given name and surname meaning "wolf"; Dib himself is a raving Knight Templar who has become a social pariah (or "lone wolf") as a result of his tendency to constantly Cry Wolf.
  • Miles Gloriosus: While he doesn't exactly shy away from action, more often than not he'll end up getting beaten and pummeled by whatever threat is in his way, watch as someone else (usually Gaz) solves the problem for him, then take full credit for himself. In the movie, he even laments that no one will believe him that he stopped the Irken invasion and saved the world after Zim reveals the Armada was never coming to Earth in the first place and he was giving up out of depression.
  • Mirror Character: Dib has shown that he's really not that different from Zim, both of them being outcasts who want to be respected by their peers, both of them can be selfish and ruthless at times, and they have big egos (though admittedly, Dib's isn't quite as big as Zim's). Like Zim, Dib also gets blinded from basic common sense due to a disastrously singleminded obsession with the other, and is also occasionally blind to just how disliked he is by his peers (especially his sister). In the comic, Tak's ship points these similarities out only for Dib to respond by proving her point, much to her chagrin.
    Dib: But that's where Zim's going, so that's where we're going.
    Tak's Ship: Ugh! And if Zim flew into the sun, would you do that too?
    Dib: Is Zim trying to fly into the sun? Why would he do that? What does he stand to gain? Is there any way we could beat him to the-
  • Missing Mom: Dib and Gaz's mother is never mentioned or shown in the show, comics, or film. It is assumed that their mother either passed away or divorced Professor Membrane. Though the creators mentioned that in Dib's case, he technically doesn't have a mother and was likely created through more artificial means. Whether or not the latter is still considered canon with the release of Enter the Florpus is up in the air.
  • Misunderstood Loner with a Heart of Gold: He has no friends and everyone thinks he's crazy, but he's still a decent person doing his best to save the world. Unfortunately he's also a Jerk with a Heart of Gold because of his delusional belief that he's the only person who can save the world, so he also alienates himself from anyone who could be an ally.
  • Motor Mouth: Compared to Zim's style of ranting, Dib has a tendency to mutter to himself extremely quickly when he's jazzed up about something. Everyone finds it annoying, even Dib himself when he realizes that he does it.
  • Mr. Exposition: Tends to provide a lot of rambling exposition, to the point where even he lampshades it.
    Dib: "Wow.....WOW! I'm boring! Do I always explain everything like that?"
  • Necromancer: One of Professor Membrane's lines from "Backseat Drivers from Beyond the Stars" implies it.
    "SON! There better not be any walking dead up there!"
  • Never My Fault: The comics show that he'd rather risk his life battling an ancient conspiracy of wizards than take responsibility for his actions and apologize for knocking over Gaz's soda.
  • Noodle Incident:
    • A Running Gag is that someone will allude to some crazy-sounding paranormal event that Dib claims to have discovered before. Given how weird this show is, it's plausible that they really happened.
      Greg from the FBI:'re DIB...right? Heh-heh, you ever get that ninja ghost outta your toilet?
      Dib: Yes, no thanks to you!
    • Whatever led to Dib bringing the dead back to life the first time.
      Professor Membrane: Son, there better not be any walking dead up there!
      Dib: It's nothing to worry about, dad! And I said I was sorry about that!
    • This little gem in "The Nightmare Begins":
      The Letter M: Yeah, what's wrong with you? All you talk about is aliens and ghosts and seeing bigfoot in your garage!
      Dib: He was using the belt sander...
    • From "Dibship Rising":
      Dib: (talking to a spaceship clone of himself) Remember our fifth birthday when we fought off that swarm of alien... ghost... bee babies?
    • This was not the only bee-related incident that happened to Dib, either. He mentioned in Enter The Florpus that he was seemingly stung by a vampire bee, and unexplainably eats too much honey. Strangely enough, he seems to be able to communicate with bee aliens.
    • Whatever gave the Mysterious Mysteries host his scar. Speaking of which, the Mysterious Mysteries host has an entire room called "The Dib Archives" (apparently very large) that's overflowing with reports from him, which he lives in mortal fear of having to visit. Honestly, it's probably safe to say that Dib's entire life is one big Noodle Incident.
    • From "Dibship Rising":
      Random kid: Hey, Dib's being all weird and giant again!
  • No Respect Guy: He's unlucky and most of the other characters, except Gaz, are idiots.
  • Not So Similar:
    • Despite their similarities, there are a few key differences between him and Zim. Zim is an outcast because of the destruction he causes the Irken Empire, but he is too insane to see that, thinking that he is beloved by his peers. Dib is an outcast because of his belief in the paranormal and is viewed as crazy for the trouble he causes, but the truth is that Dib is sane, while his peers are too dumb to see he's trying to save them; also, Dib knows he's an outcast.
    • Despite Zim's loyalty to the Irken Empire, he is truly selfish with a big ego, and does not care about the destruction he causes to win. In contrast, despite how selfish Dib can be at times and his big ego, he's actually genuinely good, seeing as he is willing to put his ego aside in order to save people he hates.
  • Not-So-Imaginary Friend: Given the sheer weirdness of Dib's world, it's very plausible that Dib really has seen all the paranormal craziness he claims to have seen — in "Bad, Bad Rubber Piggy", we actually see Dib trying to catch what is quite clearly a baby Sasquatch, despite its own claims of being a human kid. Not to mention the whole thing about Zim really being an alien, even though nobody believes or recognizes it.
  • Only One Name: Played with. At one point, he is addressed as "Dib... Whatever your last name is," and Dib says that's correct. Enter the Florpus finally confirmed Membrane to be his last name. The creators originally avoided assigning Dib a last name to go with the implication that he was a clone or creation of his father rather than a true biological son.
  • Only Sane Man: Which is saying something, as he's not entirely sane himself due to being a brash and obsessive Cloudcuckoolander.
  • Other Me Annoys Me: Consistently finds himself to be unbearable on the occasions where he's made to interact with alternate versions of himself.
  • Parental Neglect: Although it's more workaholic neglect than outright abandonment, Membrane scarcely acknowledges him.
  • Pay Evil unto Evil: Towards Zim at times.
  • Properly Paranoid: Dib has the Cassandra Truth reputation going strong. But he's right — Zim is indeed an evil alien bent on conquering humanity. What's more, whenever he's seen engaging in other paranormal studies (such as chasing a hairy kid he thinks is a baby Bigfoot), he continues to show much more awareness of the world around him than... well, the world around him. Maybe he'd be more credible if he stopped talking to himself.
  • Punctuated! For! Emphasis!: "You will pay for ruining my childhood, Zim! You! Will! PAY!!!"
  • Refuse to Rescue the Disliked: In "A Room with a Moose", he questions whether his classmates, who have always belittled him and ignored his warnings about Zim's true colors, truly deserve to be saved. In the end, he decides to save them anyway despite knowing they all still hate him.
  • Running Gag: So, how many fans are convinced Dib's head really is drawn larger than the rest of the cast's, I wonder? In the animation project God Save The Dib, Jhonen changed him so he actually does have a larger head.
  • Sanity Slippage: Most obvious in "Vindicated!" and "The Fry Cook That Came From All That Space".
  • Scary Shiny Glasses: In the opener.
  • Seeker Archetype: His anxious following of his favorite TV show Mysterious Mysteries is this trope objectified.
  • Sitcom Archnemesis: To Zim, as Dib takes every opportunity he gets to antagonize him, and is out to expose his alien identity. However, there are a few moments where they help each other out.
  • Smug Snake: As Zim's Foil, he's fittingly just as deluded about his competence and importance as Zim is about his own. While he has the much more sympathetic goal of wanting to protect humanity from Zim, it's also clearly at least partly motivated by his desire to be viewed as a hero and rub being right in the face of everyone who doubted him. He also completely overestimates Zim's actual threat level and mostly chooses to disregard any information he obtains that suggests that Zim might actually be an incompetent boob in order to maintain the legitimacy of their rivalry.
  • Speech Impediment: Temporarily as a result of Zim screwing with his past in "Bad, Bad Rubber Piggy".
  • Surrounded by Idiots: "Okay, am I the only one who sees the alien sitting in class?"
  • Sympathetic Inspector Antagonist: Since Zim is the main character, Dib is generally the main antagonist attempting to expose him as an alien to the world. But, as Zim is distinctly a Villain Protagonist, Dib is essentially the show's hero.
  • Thinking Out Loud: A habit he frequently lampshades in later episodes.
  • This Loser Is You: At the beginning of Enter the Florpus and the comic series, he has grown into an obese and unwashed shut-in who has spent (what has felt like) over a decade obsessing over Zim coming back; a not-too-subtle jab at die-hard Zim fans.
  • Throw the Dog a Bone: Some episodes end on relatively high notes for him, usually by means of worse things happening to Zim than to him.
    • In "Halloween Spectacular of Spooky Doom", he successfully escapes from the nightmare dimension and is the only one at the end of the episode who isn't injured, even getting away with a lollipop.
    • In Enter the Florpus, Dib gets a happy ending. He learns that his family does genuinely love him and he indirectly defeats the Irken Empire as the Irken Armada and the Tallest are now all trapped within the Florpus. While Zim is still a threat, Dib has saved the Earth and gained the respect of his family.
  • Took a Level in Jerkass: While he was never exactly a saint in the show, he was a bit nicer than he has been in the comics. Nowadays he's more prone to things like abandoning people when they're no longer of use to him (Groyna in Issue #8 for example) and refusing to apologize when something is clearly his fault (such as "Issue #29" where he spills Gaz's soda).
  • Troubling Unchildlike Behavior: Does displaying a desire to strap Zim to an autopsy table and dissect him to see his alien organs count?
  • The Unfavorite: Dib's dad seems to notably favor his sister, just because she's not "insane". Subverted in "Bloaty's Pizza Hog" when Professor Membrane refuses to leave Dib behind on Family Dinner Night.
    Prof. Membrane: My poor, insane son.
    Prof. Membrane: (to Gaz) You're my funny child!
    • Later episodes, as well as the movie show that Membrane still loves Dib dearly. He simply comes off as cold due to the difficulty he has bonding with his family in general due to work as well as his percieved views of Dib's mental state. And even with that perception, in most cases he tries to be careful and understanding with his son, urging Gaz to do the same as well to help him.
  • Unwitting Pawn: In Enter the Florpus, Zim uses him to gain access to and take over Membrane Labs.
  • Useless Protagonist: He begins Enter the Florpus declaring that he's the only one capable of defeating Zim, but ultimately contributes very little to thwart his nemesis besides repairing Tak's ship (which flies itself for the most part).
  • Twitchy Eye: At the end of "Vindicated!", and arguably during his mental breakdown in "The Fry Cook That Came From All That Space".
  • Verbal Tic: "NYAH!!!"
  • Vocal Evolution: Andy Berman couldn't seem to make up his mind: in some episodes, Dib sounds like he did in the premiere (more nasal and fast-paced), and in others, Dib's voice is much rougher and lower, and he talks more slowly. The latter voice makes him sound more teenaged.
  • "Well Done, Son!" Guy: The few times he does interact with Membrane. It's never easy when your dad is a strong skeptic of everything you're trying to prove. Enter the Florpus ends with Dib finding out that his father is genuinely proud of him, even though he refuses to acknowledge the paranormal.
  • Worth It: This dialogue in "The Wettening".
    Gaz: (after beng splashed in water by Dib) You do realize I'm going to destroy you now.
    Dib: It was worth it! Score one for the human race! Score zero for the Zim...thingy...race.
  • Worthy Opponent: "You're one of the only people who can appreciate the amazingness of this plan, so I'm going to let you in on what "it" is..."

    Gazlene "Gaz" Membrane
Voiced by: Melissa Fahn

"What you need is to give the Game Slave to me or I will plunge you into a nightmare world from which there is no waking!"
(after getting a negative response): "I hope ya like NIGHTMARE WORLDS!"

Dib's younger sister. Like Dib, she knows Zim's real origin, but unlike him, she doesn't much care, on the grounds that he really isn't very good at the whole world-conquering thing. That, plus she seems to be something of a misanthrope herself. (She did once have a very hard time deciding whether to destroy all life on Earth or not, when putting a can of beans in a super-powered microwave.) Mostly Gaz sticks to her video games and snarks at the insanity around her.

  • Accidental Hero: In "NanoZim", she saves Dib's life by using a microscopic submarine to beat up a Zim-controlled nanoship traveling through his body, thinking it's just a video game.
  • Actually Pretty Funny: She's laughed at some of the stunts Zim's pulled on her older brother. Oddly, her saying this line near-verbatim after one of Dib's stunts proved unexpectedly hilarious was one of the closest things she's had to a Pet the Dog moment with him in the cartoon series.
  • Ace Pilot: Technically Tak's ship could fly itself, but in the climax of Enter the Florpus, Gaz pilots Tak's ship through an asteroid field and blows them up left and right with the ship's lasers.
  • Adaptational Heroism: While still snarky, cruel and mean-spirited, Gaz comes off as much more emotionally invested in things in the comics than she ever did in the series. She's also generally more civil with Dib. Overlaps with Characterization Marches On and Flat Character below. Enter the Florpus has her graduate to being a full-on Jerk with a Heart of Gold.
  • Adaptational Personality Change: She's antisocial and downright unstable in the original series, but, while still generally grumpy, is much more easygoing in the comics and Enter the Florpus. Her feelings towards Dib in particular were totally overhauled; going from being enraged by the mere thought of his existence to clearly caring about him despite finding him annoying.
  • Adaptational Wimp: Downplayed in Enter the Florpus, where she demonstrates neither the supernatural powers or the absurd hypercompetence that she often would in the series. While she's still more consistently competent than Dib, there's no suggestion that she's anything more than a crafty little girl.
  • A Day in the Limelight: "Bloaty's Pizza Hog", "Game Slave 2", and "Gaz, Taster of Pork" all focus on her.
  • All There in the Manual: According to this issue of the Nickelodeon Magazine, her full name is Gazlene. It is finally used by Foodio 3000 in Enter the Florpus.
  • Ambiguously Human: She demonstrates unexplained supernatural powers when enraged in "Game Slave 2", including Offscreen Teleportation, levitation, and pyrokinesis. However, Jhonen Vasquez has stated that Gaz has no genuine powers of any sort, and that she is simply "someone you don't want to anger".
  • Angry Dance: Invoked in "Tak, the Hideous New Girl" where GIR tells her that he'll help her only if she dances with him. She does so, rather angrily and begrudgingly.
  • Anime Hair: Shaped like a massive set of jaws.
  • Anti-Hero: A Nominal Hero. She only cares about herself and will usually only help her brother if it benefits her. An exception to this is whenever Dib's life is in serious peril, such as Issue #14 of the comics. By Enter the Florpus, she morphs into a Knight in Sour Armor.
  • Ascended Extra: While she was never an extra, she's much more of an active player in the comics and Enter the Florpus than she ever was in the original series.
  • Aw, Look! They Really Do Love Each Other: While it's rare, the comics do show on occasion that despite Dib annoying her she does care about him, and when he's in real danger she'll help him. Enter the Florpus continues that characterization from the comic, where she actually treats Dib with more decency in the special than she ever did in any other episode of the show.
  • Ax-Crazy: Not to Zim's level, but she has her moments. Her first instinct upon being told by her father that heating up a can of beans in the microwave may result in the eradication of all life is to do exactly that, and she shows outright disappointment when nothing ends up happening afterward.
  • Badass Adorable: She's very scary when enraged and is tough enough to go head to head with alien warriors, but at the same time she's a small, curious child and her mannerisms can be quite cute.
  • Badass Biker: In the script for "Ten Minutes to Doom", she drives a motorcycle from the arcade all the way to her father's lab to retrieve Zim's PAK (long story).
  • Badass Fingersnap: Happens in "Gaz, Taster of Pork" when she snaps her fingers to activate her stuffed animals and dolls which were programmed by her to feed on human flesh.
  • Berserk Button:
    • Take her stuff (especially her Game Slave) and you will pay.
    • Some episodes have her flat out state that Dib's existence itself fills her with an uncontrollable rage, while others lessen her hatred to "merely" being of the sound of his voice.
  • Big Brother Bully: Inverted—she's a Little Sister Bully. She's got no problem with and even seems to enjoy insulting or threatening Dib, or even physically assaulting him for that matter, should she see him as deserving of it. Downplayed considerably in the comics and Enter the Florpus after she became more fleshed out as a character and Took a Level in Kindness.
  • Big Eater: She's shown eating in the majority of her scenes and tends to react violently when her food is taken away or when her abilities to obtain or enjoy food are jeopardized.
  • Blood Knight: She loves fighting in video games, and come Enter the Florpus, she welcomes the chance to take control of the Tak-ship's lasers with a wild laugh.
  • Boots of Toughness: A close-up shot of her shoes in "Gaz, Taster of Pork" reveals that they are spiky combat boots.
  • Boyish Short Hair: She's tomboyish and she wears her hair in a rather cubic bob.
  • Brilliant, but Lazy: When forced to take action against Zim, Gaz has proven herself to be highly intelligent, perceptive, and resourceful. However, knowing that Zim's plans always fail in the end, usually because of his own incompetence, she'd much rather sit back, grab a slice of pizza, and watch him screw himself over.
  • Bystander Syndrome: Generally. She does help on occasion.
    Gaz: Are there any video games around here?
    Zim's Computer: No. Not really.
    Gaz: I guess I'll save the Earth, then.
  • Characterization Marches On: Jhonen expressed a desire to have her be less "one note" in the comic, viewing her portrayal in the television series to be a bit too hateful. As such, she now behaves more like "an actual sister" towards Dib and reacts more vividly to some situations like this.
  • Child Prodigy: Is an unusually skilled pilot, was able to fix an alien starship, and apparently created her own flesh-eating robot dolls. It makes a bit of sense, given who her dad is.
  • Cloudcuckoolander's Minder: After playing this role on occasion previously, she fully graduates to this in Enter the Florpus, where she seems to have accepted that she's the only one capable of keeping Dib and Zim's obsessions and antics from screwing everyone else over, corralling Dib into doing the right thing (violently, if need be), and stepping up to make sure things don't get any crazier than they already are—even if that means calmly pretending a bizarre fish-headed clone is her father, while Dib is too intense to play along.
  • Comedic Sociopathy: A lot of humor is derived from her tendency to screw people over and not care. One highlight is when she was told by her father to remove the beans from the can before cooking them so it wouldn't cause the termination of all human life, which of course leads to her ignoring her father's warning and being upset that her dad lied to her about cooking the beans while still in the can would kill everyone.
  • The Comically Serious: Gaz tends to handle a lot of the bizarre solutions she finds herself in with an air of cold stoicism. Naturally, this gives her some hilariously snarky reactions when paired with the much hammier Zim, Dib and GIR.
  • Costume Evolution: In the comics, Gaz's apparel is redesigned to a light green-grayish shirt with an 8-bit rabbit skull paired with a skirt.
  • Creepy Child: She frightens grown men, as seen in "Mysterious Mysteries."
  • The Cynic: Seems to be convinced that everything is stupid. To her credit, she's probably right.
  • Daddy's Girl: An odd example, but she does seem to have a great deal of affection for her father, and will go to any length necessary to spend time with him. In Florpus, even before everything goes crazy and Membrane gets kidnapped, her number one priority is to make sure her father's event goes without a hitch, and her primary motive for stopping Zim is saving him.
  • Deadpan Snarker: Snarks like there's no tomorrow.
    Dib: "Did you hear that, Gaz? Humans don't have squeedlyspooches!"
    Gaz: "I've got a squeedlyspooch."
    * beat*
    Gaz: "Why do you have to have a head?"
  • Death Glare: She's VERY good at giving intimidating glares.
  • Depending on the Artist: She has had several different eye colors—blue (in the pilot), brown (in the series), green (in Issue #5 of the comics), and purple (in Issue #17).
    • Some fan art shows her with amber eyes instead of the normal brown color.
      • Also, she is wearing leggings as shown in the series, but like the former, is sometimes shown wearing tights.
  • Determinator: Gaz pursues whatever she wants with relentless fury. This is especially the case whenever she seeks vengeance on anyone who wrongs her; in "Game Slave 2", for example, she stops at nothing to obtain the Game Slave 2 that Iggins falsely claimed was his...even if it means riding a hijacked scooter in a thunderstorm, stalking, and playing mind games. An example unrelated to revenge is "Bloaty's Pizza Hog", where she doesn't let anyone or anything—not GIR, Zim, or Dib's refusal to come home—stand between her and a night out with her father.
  • Disproportionate Retribution:
    • Particularly in the episodes "Game Slave 2" and "Battle-Dib", Gaz is prone to waging all-out war against those who cheat her of what is rightfully hers... even if it's just a slice of pizza or a gaming console, it's Serious Business.
    • Also in Issue #5, when her reaction to Dib interrupting her game to make her join him in spying on Zim is to kidnap him and drag him to an Alternate Universe ruled by gamers, where he's placed in virtual simulations of games and put through horrible suffering.
    • Humorously subverted in Issue #29 of the comics where Dib accidentally knocks over her bottle of soda. Gaz says that if Dib doesn't get her a new bottle, he'll... have to apologize for what he did. Dib is still horrified at the thought.
  • Double Standard: Abuse, Female on Male: Her treatment of Dib for bothering her is downright psychotic in some episodes, but Played for Laughs.
  • The Dreaded: Fear of her wrath is one of the few things that can successfully deter Dib from his usual obsession with Zim. Zim himself screams in fear upon seeing her angry in "Future Dib".
  • Enfante Terrible: She's just a kid, but still sadistic.
  • Even Bad Men Love Their Mamas: Contrary to her overall sociopathic tendencies, Gaz is perfectly amiable toward Professor Membrane.
  • Everyone Has Standards: On a few occasions she humors Dib when he's feeling particularly exasperated. In the timeline created in "Bad Bad Rubber Piggy", she even seems more amiable to her poor brother after Zim disfigured him.
  • Evil Is Burning Hot: Sometimes when she gets angry, the background behind her bursts into flames.
  • Evil Is Petty:
    • "Battle-Dib" is basically her doing everything possible to foil Dib by cheating, just because he took her last piece of pizza.
    • In Issue #5 of the comic, she drags Dib into an Alternate Universe and traps him inside video games where he's horribly tortured, all just because he interrupted her game.
  • Expressive Hair: In "Game Slave 2", when she's angry at Iggins, rain pours down and straightens her hair. When he finally gives the game to her, her hair is restored to its normal state with a magical glow.
  • Eyes Always Shut: When she does open them, she's either in an enraptured trance or about to hit you. She'll occasionally open them when making a point. Averted in Enter the Florpus, where she opens her eyes a lot more often, leading to her being more emotive.
  • Feel No Pain: When she's playing her video games, her concentration becomes so intense that no amount of physical pain seems to affect her. She completely ignores the itchy lice attack on her head in "Lice" and isn't bothered when Zim steals one of her organs and replaces it with her Game Slave in "Dark Harvest."
  • Flanderization: In earlier episodes of the series, she was simply antisocial with the desire to be left alone. In later episodes, she gets angry much more easily, and becomes far more prone to sadistically hurting Dib or anyone else who crosses her at the slightest provocation. Her very first line in the first episode is swearing that Dib "will pay!" for drinking the last soda, but thirty seconds later she's talking to him civilly. Compare that to her insatiable desire for painful, terrible revenge in later episodes like "Game Slave 2" or "Gaz, Taster of Pork".
  • Flat Character: Other than tormenting people who cross her and indulging in video games and pizza, she really doesn't have much of a personality. Jhonen Vasquez himself has gone on record saying one of his biggest regrets in the series was underwriting her character and making her come off as shallow and one-note. He took great pains to change this in the comics and Netflix movie.
  • Foil: To GIR. Both serve as junk food-guzzling sidekicks of questionable loyalty to obsessives with over-inflated senses of self-importance, but where GIR is manic, hyperactive and chipper, Gaz is aloof, sullen and disinterested. Both also tend to serve as an unforeseen third party that ultimately saves the day in the end, but while GIR generally does so by being an incompetent Spanner in the Works, Gaz does so by being a Hypercompetent Sidekick.
  • Forehead of Doom: Her forehead is pretty big, and she's short-tempered.
  • Freudian Excuse: The reason she has such an antagonistic relationship with Dib is because he misinterprets her actions as helping him, or he assumes that she's okay with dropping whatever she's doing to see what insignificant thing he's caught Zim doing.
  • Gamer Chick: She would rather play video games than just about anything, and she is very, very good at them. And terrifying if you attempt to prevent her from playing them. She was seen only playing handheld games in the show, but the comics consistently have her playing console games and MMORPG's as well.
  • Girls Love Stuffed Animals: She has a collection of stuffed animals and dolls...that she converted into security drones programmed to feed on human flesh. Yikes.
  • Given Name Reveal: Her full name, Gazlene, is spoken for the first time in-series at the end of Enter the Florpus... quite nonchalantly by Foodio 3000.
  • Goth Girls Know Magic: While she isn't a goth per se, she has a look and attitude reminiscent of one and is occasionally suggested to have supernatural powers. Ironically, it's Dib, not her, who enjoys dabbling in the occult; Gaz, despite her creepiness, is pretty singularly devoted to mainstream consumer culture.
  • Iconic Item: Averted: When she was younger, she wore a pink bow in her hair as seen in "Bad, Bad Rubber Piggy." However, by the present day, it's never seen.
  • Hair-Trigger Temper: It doesn't take much to set her off, especially if it's from her brother.
  • Hates Being Touched: Gaz seems to greatly dislike, or at least be very particular about, physical contact of any type.
    • In "The Wettening", she threatens Zim with limb removal should he not put her down after picking her up and trying to use her as an umbrella during a rainstorm, only to attack him even after he puts her down.
    • In "Future Dib", she reacts with utter revulsion when "Dib" (who was actually Zim controlling a Dib robot) puts his arm around her.
    • During one scene in "Tak, the Hideous New Girl", GIR grabs her face in a silly fashion, and she immediately pushes him off with an angry scream.
    • In Enter the Florpus, when she tells all of the surrounding children to hold hands in order to thwart the destruction of Earth, a boy attempts to hold her hand, to which Gaz shouts, "No way! Be serious!", and promptly takes his hand and places it into someone else's hand.
  • Hates Everyone Equally: She frequently expresses her disdain for the rest of the human race.
  • Heroic Comedic Sociopath: If she can be bothered to help at all, she's usually this.
  • Hidden Depths: She occasionally shows glimpses of a softer side, as well as an interest in things other than video games.
    • In the unproduced "Mopiness of Doom" episode, she is disturbed by Dib giving up on the paranormal and relieved when everything returns to normal.
    • She seems to really want to spend time with her father, and will do whatever it takes to do so, as shown in "Bloaty's Pizza Hog".
    • Playing video games can likewise bring out a friendlier, more sociable side of her. Evidence of this is in "Nanozim" when she approaches Dib and asks him in a genuinely amiable tone what game he's playing (unaware that it wasn't actually a game) and even gives him tips on how to beat it when she sees him struggling ("The transformation move is always quarter, circle, back.") She's also shown playing MMORPG's with fellow gamers in the comics.
    • Some episodes, such as "Bloaty's Pizza Hog" and "The Wettening" show that she does have pastimes other than video games; she's engrossed in and enjoying drawing in the former, and reading a book in the latter.
    • If the debut issue of the comics and Enter the Florpus are anything to go by, Gaz can play electric guitar.
  • Hypercompetent Sidekick: Occasionally accompanies Dib as a reluctant assistant of sorts, and always ends up proving herself to be much better at foiling Zim than he is.
  • Iconic Item: Never seen without her Game Slave.
  • I Just Want to Be Normal: Implied a few times, but primarily in "Bloaty's Pizza Hog".
    "All I want is to have some pizza, hang out with Dad, and not have your weirdness mess up my day."
  • Improbable Weapon User:
    • She used cans of Poop soda against Zim, Dib, Tak, and MiMi in "Tak, the Hideous New Girl."
    • She ultimately defeats Zim with a large baked ham near the end of Enter the Florpus.
  • Inexplicably Awesome: How a little girl is able to pull off half the feats she does(particularly when angry), is never explained. She just can.
  • Jerkass: She's cynical, antisocial, and lashes out violently over the most trivial things.
  • Jerkass Has a Point:
    • When Dib points out to her that Zim is trying to wipe out the human race, Gaz states she doesn't care because Zim is "so bad at it." As Zim is repeatedly shown to be a Harmless Villain who constantly screws up due to his own stupidity, she does have a point.
    • While her actions in Issue #5 are a case of Disproportionate Retribution, she is right that Dib has a habit of bothering her, disregarding her wants and desires, and forcing her to give up what she's doing to join him.
  • Jerk with a Heart of Gold:
    • In "Tak, the Hideous New Girl", after much reluctance, she helps to stop Tak from taking over the world despite there being no personal gain from it for her.
    • Several issues of the comics make it very clear that she does genuinely care about her brother's well-being, occasionally helping him or giving advice (granted, said advice is usually to relax and stop obsessing over Zim, which he promptly ignores). In particular, Issue #14 has her explicitly state that she doesn't want him to blow up and do everything in her power to prevent him from doing so, and admits that she'd feel genuine guilt for being the reason Dib blew up.
    • Enter the Florpus really solidifies that Gaz is, beyond any shadow of a doubt, this trope. She's now capable of having a conversation with Dib without physically abusing him at the mildest provocation, and she does admit, when Dib is at his lowest point, that she tortures him because he's strong enough to take it. She also tells him that it's "no fun" to pick on him when he's completely devastated.
  • Jerk with a Heart of Jerk: Also this trope. In the episode "Bloaty's Pizza Hog", she does save her brother, but only because she wants to go out to eat with her father.
  • Karma Houdini: On occasion, though other times (like in "Battle-Dib"), she gets her comeuppance.
  • Kids Are Cruel: Sometimes. Other times, she's just apathetic.
  • Lack of Empathy: She tends to care little for some people, because she thinks she's surrounded by thoughtless people. Her voice actress, Melissa Fahn, has gone on record confirming this; according to her, Gaz is capable of feeling and showing affection and love, but she generally doesn't because she sees herself as so much better than those around her. Given the dystopian Crapsack World she lives in, it isn't impossible to see why.
  • Large Ham: She has her moments. Most of her dialogue in the climax of Enter the Florpus is screamed at the top of her lungs. Her ham is enough to one-shot Zim. With an actual ham, no less!
    "Haaaaaaammmm!" (Gaz holds the ham over her head as lighting strikes it like Thor's hammer.)
    • From an earlier episode, there's her hysterical reaction when Dib swipes her last slice of pizza:
      "Let it be known that from this day, until the end of the day, vengeance will be mine. Dib, you will not know the meaning of peace, for I shall rain misery down upon your pizza-stealing heart!"
  • Leitmotif: A harpsichord.
  • Little Miss Badass: Gaz is all badass. The fact that she's only around 10-12 and has already beaten the living crap out of her older brother more than once for crossing her (by stealing and beheading her Bitey the Vampire doll on one occasion and casting a spell on her without her permission on another), coupled with the fact that she terrorized a guy for taking the last video game system in stock that was rightfully hers, no doubt makes her qualify.
  • Little Miss Snarker: A humorlessly sarcastic little girl.
  • Little Sister Instinct: Sometimes, she can be this to her brother. However, these moments are often motivated by her own interests.
  • Loners Are Freaks: Like Dib, she appears to have no friends at Skool, and intimidates her classmates with her antisocial behavior. She clearly couldn't care less. In the comics, she plays MMORPG's with other gamers, but it isn't certain if she sees these people as friends or not.
  • Lost Food Grievance: She's very territorial over her food, and a plot point in "Battle-Dib" involves her exacting revenge quite excessively on Dib for him snatching her last slice of pizza.
  • Maybe Magic, Maybe Mundane: While reality seems to warp when Gaz is in a mood and she often shows hypercompetence in things no little girl has any business being, it's never clear whether she's supernatural in any way or she's just so intimidating it appears that way to people around her.
  • Meaningful Name:
    • Gaz, which is short for Gazlene (a play on the word "gasoline"), has a fiery Hair-Trigger Temper and a tendency to cause a lot of damage when provoked...similar to how fire set to gasoline causes destruction.
    • In Hungarian, the adjective gaz would mean "vile, wicked and villainous" among other things. Gaz herself can be quite cruel and often displays a Lack of Empathy.
  • Missing Mom: Gaz and Dib's mother is never mentioned or shown in the show, comics, or film. It is assumed that their mother either passed away or divorced Professor Membrane.
  • Mouthy Kid: Gaz tells it like it is or puts you in your place, regardless of who you are.
    Deelishus Weenie employee: Deelishus Weenie!
    Gaz: Hi.
    Deelishus Weenie employee: Uhhh, what'll it be?
    Gaz: Be quiet. I wanted to let you know that my brother is trying to break into this building through some secret entrance.
  • Nightmare Fetishist: Gaz definitely likes dark-themed things. On the show, she wears a black dress and a skeleton pendent (which has led some to mislabel her as Goth). Her bedroom is shown to be very dark and spooky, and she draws a monstrous-looking pig in "Bloaty's Pizza Hog". She also loves vampires, gory video games, and in "Bad, Bad Rubber Piggy", she's ecstatic to watch a television program depicting bats eating a cow.
  • No Social Skills: Gaz is rarely seen interacting with people bar her family and seems visibly uncomfortable on the few occasions she has to. Downplayed in the comics, however, as she's shown playing online games with other people, but doesn't seem to actually like them that much.
  • Not So Above It All: Despite her shrewd intelligence and Only Sane Woman role on the show, "Bloaty's Pizza Hog" shows that even she isn't above being controlled by Bloaty's Pizza Hog's hypnotic commercial.
  • Off-Model: The shape of her head changes between certain scenes in "The Wettening."
  • Offscreen Teleportation: When stalking Iggins in "Game Slave 2".
  • Only Sane Woman: She is one of the few people who know perfectly well that Zim is an alien who wants to conquer/destroy the Earth. She's also largely uninterested in the conflict, quipping rather correctly that Zim isn't very good at what he does.
  • Perpetual Frowner: Fitting with her personality, she almost never smiles and almost always has a scowl on her face.
  • Pet the Dog: As much as she seems to dislike Dib, it's worth noting that her few moments of kindness are mostly directed at him.
    • In Issue #14 of the comics, she tricks Dib into drinking one of their father's formulas, not knowing that it'll make him explode if he becomes too upset at any point in the day. Out of concern for Dib's life, guilt that it would be her fault if he died, and fear that she wouldn't get to go to Bloaty's, she begrudgingly spends all day accompanying Dib on his paranormal adventures instead of letting him blow up.
    • In the unproduced episode "Mopiness of Doom", she actually seems worried when Dib decides to stop investigating the paranormal and plotting against Zim in favor of studying "Real Science", and tells him about a Vampire Doughnut special that Mysterious Mysteries is airing, in an attempt to turn him back to his old self. She turns out to be right, as Dib realizes that studying the paranormal is what really makes him happy.
    • In Issue #38, upon realizing that Dib is stuck in the woods, she goes out of her way to sabotage GIR's impersonation of her brother, and therefore Zim's plan of the week.
    • In Issue #39, when the alien ship they're on is blowing up and Dib is focused on trying to convince the ship's owner to flee with them, Gaz grabs him and drags him into an escape pod.
    • In Enter The Florpus, when she sees Dib on the ground in a space prison cell, wallowing in his near-defeat, expecting Gaz to kick him while he's down, she says that she only tortures him because she knows he can handle it, but not while he's at his worst.
  • The Power of Hate: Her raw hatred seems to manifest itself as supernatural abilities at times.
  • Puppy-Dog Eyes: Several episodes have her doing this, but it’s rarely shown.
  • Sarcasm Mode: The comics have a running gag where she feigns enthusiasm at whatever Dib is currently doing, usually accompanied by her opening her eyes wide and giving a beaming smile, only to immediately switch back to her normal self and mock him.
  • Shared Family Quirks: Gaz's obsession with games is not all that different from Dib's obsession with the paranormal; Professor Membrane even alludes to this in Enter the Florpus.
  • The Smurfette Principle: She's the show's only main female character.
  • Sour Outside, Sad Inside: While it's never explictly said in the show, she is implied to be very depressed, which is justified, as she is a pre-teen. Eric Trueheart lampshades this in the art book.
  • Sour Supporter: She's the closest thing Dib has to an ally... and she's not at all happy about it.
  • Spoiled Brat: Membrane gives her everything she actually needs.
  • Supernatural Is Purple: She has purple hair and is implied to be something more than human.
  • Surrounded by Idiots: While Dib still has some hope for humanity, his sister, Gaz, on the other hand sees everyone around her, including Dib, as idiots. She knows Zim is an alien, but doesn't really care.
    Dib: Don't you care that Zim is trying to destroy all mankind? Huh?
    Gaz: But he's so bad at it.
  • Tomboy: A very surly, aggressive preteen girl whose interests are video games, tormenting her brother, and snarking at everyone and everything around her.
  • Tomboy with a Girly Streak: While not particularly girly, she does sport a pink hair bow during two flashbacks in "Bad, Bad Rubber Piggy", wears a pink winged teddy bear footie pajama in "Gaz, Taster of Pork", and have many stuffed animals and dolls in her room in the aforementioned episode (albeit one's that turn into monstrous beasts which feed on human flesh when activated). She also wears a dress with pinkish-colored tights on the show, and a skirt with her new outfit in the comics.
  • Took a Level in Kindness: In Enter the Florpus, while Gaz still has her dark side, she's at the "nicest" she's ever been in the series, graduating fully to Jerk with a Heart of Gold and displaying that yes, she does actually care about Dib.
  • To the Pain: Takes great care to explain to Dib how she will make him suffer in "Gaz, Taster of Pork", complete with glowing Red Eyes, Take Warning and levitation.
  • Trademark Favorite Food: She loves pepperoni pizza more than almost anything else.
  • Tranquil Fury: When you have screwed up big time, she almost never goes ballistic; she's too mad for that.
    • In "Game Slave 2" when Dib keeps her from going to the mall early so he can watch a new episode of Mysterious Mysteries of Strange Mystery. Later upon arriving at the mall, she and Dib find that the line for the game she wants is outrageously long. She grits her teeth and looks like she's going to get violent for a second (complete with the background being engulfed in flames), but simmers down immediately after and simply sends Dib on a wild-goose chase for a chupacabra.
    • In "The Wettening", after Dib jumps into a rain puddle and inadvertently splashes Gaz (he was trying to splash Zim), Gaz tells him in a completely deadpan tone that she's going to destroy him.
    • In Issue #5, when Dib turns off her game, a furious Gaz stands there in Stunned Silence and then leaves the room.
  • Twitchy Eye: "I'm trying to draw a little piggy. Can't you see I'm trying to draw a little piggy?!"
  • Vague Age: She's a year younger than Dib, but that's all we know for sure. Flashbacks show them to have been babies at the same time, so it can be assumed they're not very far apart in age.
  • Vocal Evolution: Like with Dib, Gaz's voice would shift on occasion from low-pitched and rough, to higher and softer.
  • When She Smiles:
    • When playing as her in the online game Dib's Nanochase, she will smile upon the player's victory.
    • She gives a few genuine smiles in Enter the Florpus, such as when she's reunited with her father.
  • Wingding Eyes: She gets swirls in her pupils when distracted by a commercial in "Bloaty's Pizza Hog."
  • Women Are Wiser: The show's only major female character is also the only one smart enough to realize how pointlessly stupid its central conflict is.
  • Wrong Genre Savvy: In Enter the Florpus she's completely nonchalant about Zim preparing to complete his evil plan because, in her own words "It's Zim. It's just going to fail anyway." Of course since this was a Big Damn Movie the plan actually succeeds and she is quick to admit she was wrong.
  • You Are Better Than You Think You Are!: In Enter the Florpus, she delivers one of these speeches to Dib when the latter is feeling down, albeit in her own way:
    "You're my brother, man. I only torment you because I know you can handle it. I've done way worse than throwing you in a space prison. This is nothing. Get up!"
  • You Gotta Have Blue Hair: Or, rather, You Gotta Have Purple Hair.

    Professor Membrane
Voiced by: Rodger Bumpass

Friend to the world, enemy of Santa Claus.

The father (at least allegedly) of Dib and Gaz, Membrane is a super scientist who also hosts the Show Within a Show Probing the Membrane of Science. He keeps a very busy schedule, to the point where he can only manage to eat dinner with his children once a year.

  • The Ace: With as often as he's used for comic relief, it can be easy to forget that in the universe of the show he's the most well-respected scientist on earth, and for good reason.
  • Action Dad: Enter the Florpus has him take on an entire army of robots to protect his son.
  • Adaptational Badass: While in the show he was always able to create earth-shattering inventions, in Enter the Florpus he gains robot arms (that he says were lost to sharks) and can shoot powerful lasers from them, which he uses against Zim's robot army while in pursuit of Minimoose with Dib and Gaz, as well as breaking out some pretty sick kung fu.
  • Adaptational Nice Guy: He's much more present for his kids in Enter the Florpus, and is distinctly presented as merely being unable to connect with Dib rather than outright neglectful toward him as he often was in the series.
  • Agent Scully: Despite all of the proof Dib has gathered about the existence of aliens and the paranormal, Professor Membrane refuses to believe any of it is "real" since it's not scientific. In the end, he continues to delude himself into thinking everything he experienced in Enter the Florpus was a hallucination, even after encountering multiple aliens and actively helping his son and daughter thwart the Tallests' destruction of the Earth.
  • All Just a Dream: In Enter the Florpus, despite his son having alien objects he collected from his enemy, being kidnapped by Zim, and put into an space prison, he believes he's in a hallucination.
  • Always Someone Better: Despite his massive popularity, he is unable to turn the public against Santa, and spends much of the Christmas seasons either bunkered down in his lab or screaming in impotent rage.
  • Arbitrary Skepticism: He refuses to believe any of Dib's paranormal claims, but he does believe in Santa Claus. (Then again, so does everyone else.) In one episode he yelled that Dib better not have any walking dead in his room. (Dib SAID he was sorry about that!)
  • Anime Hair: Where Dib gets it from. His is shaped more like a lightning bolt, though. It also has bones, giving them limited prehensile ability.
  • Arm Cannon: Is revealed to have these in Enter the Florpus, courtesy of his cybernetic arms. They can be taken clear up to Wave-Motion Gun territory should he do a Kamehame Hadoken.
  • Artificial Limbs: Enter The Florpus reveals he has two. His arms, apparently since childhood, when they were lost to sharks.
  • Badass Bookworm: Can restore all of the power on Earth simply by pulling a specially made lever and also launch energy beams from his hands! There's no indication of whether or not this was an invention he'd created or if he just has amazing superhuman abilities, but it's amazing either way. It's ultimately revealed in Enter the Florpus that Membrane has long since replaced his arms with high-tech prosthetics after his originals were eaten off by sharks.
  • Berserk Button: Santa, for giving him something he didn't want for Christmas, and sharks for betraying his trust and biting off his arms.
  • Big Good:
    • Serves as this to a degree for humanity. While he's oblivious and indifferent to the presence of aliens, he is pretty much single-handedly responsible for the massive technological leaps humankind has taken by the series' beginning and is respected, admired and trusted by the world's leaders. He's to thank for basically any aspect of the series' portrayal of Earth that doesn't make it out to be a completely Crapsack World.
    • Much more pronounced in Enter the Florpus. His desire for world peace kickstarts the plot, he's generally much kinder to Dib and he even ends up telling him he's proud of him and fighting against Zim's... er, his own robot army alongside the boy. Ultimately, he also uses Minimoose to save the Earth in the end.
  • Bunny-Ears Lawyer: He may be an eccentric Large Ham with an irrational hatred of Santa Claus, but he's also a legitimately brilliant scientist who can effortlessly build things that are on par with Irken technology and is very dependable during times of crisis.
  • Catchphrase: "My poor insane son."
  • Cloudcuckoolander: He may be a great scientist, but he's still a Mad Scientist. He's the smartest person on the planet, yet the existence of the supernatural completely alludes him. His idea of parenting is skewed at best, using pre-recordings and robots to look after his children (Dib being over-zealous and a little crazy, Gaz being a moody sociopath) and can only every really spend time with them a few times a year. He is also prone to other forms of strange behavior, including believing in Santa Claus (and making it his mission in life to kill him), using electricity to make toast (having been the inventor of "super-toast") and is prone to mood-swings.
  • Crazy-Prepared: When his son needs to fight an evil sentient Santa suit, he's able to give him access to an enormous anti-Santa arsenal he prepared for just such an occasion.
    Membrane: I knew this day would come!
  • Cyborg: Enter the Florpus reveals that at least both of his arms are actually robotic prosthetics.
  • Depending on the Writer: While he's always a neglectful parent, the show tends to zig-zag on whether or not he even interacts with his children on a regular basis. Some episodes show him working at home, and even occasionally taking time to do more mundane things like eat meals or watch TV with his kids, while others suggest him to be so busy that he only sees Dib and Gaz in person a few times a year, communicating with them almost entirely through video monitors (which themselves zig-zag between being live feeds or pre-recorded messages).
  • Disabled in the Adaptation: His arms are mechanical prosthetics in Enter the Florpus whereas they at least appeared to be organic in the original series.
  • Disproportionate Retribution: The Christmas Episode establishes that he hates Santa and wishes to destroy him simply for getting a crapton of socks for Christmas instead of the 12 cases of Uranium-238 he wanted.
  • Ditzy Genius: Despite his incredible scientific intellect, he seems as dense as everyone else when it comes to the obvious extraterrestrial activity that's constantly happening around him.
  • Evil Laugh: "There are no curses, son. MUAHAHAHAHAHAHAHA!"
  • The Faceless: Never seen without a high collar and goggles, even as a kid.
  • Flat-Earth Atheist: Despite his world being filled with readily accessible paranormal phenomena, he dismisses everything outside of traditional science as being ridiculous.
  • Foil: To the Almighty Tallest. Both are distant authority figures that the main characters seek to gain the recognition of, but while the Tallest are lazy and incompetent despots who simply ignore Zim because they dislike him, Membrane is a brilliant Workaholic super scientist who only ignores his children as a result of his extremely busy schedule. It's also worth noting that the Tallest pay close attention to the information Zim gives to them about humanity (if only out of a Bile Fascination for how Humans Are Morons), while Membrane is an unflinching Agent Scully who refuses to even entertain his son's claims that aliens exist. Finally, both Membrane and the Tallest are shown at various points screwing around with puppet versions of themselves.
  • For Science!: He'll do anything as long as it can benefit the field of science.
  • Genius Bruiser: Enter the Florpus reveals him to be an agile martial artist whose augmented strength from his cybernetic limbs allows him to tear through hundreds of armored robots with ease. Appropriately, Art Evolution gives him a much bulkier physique than he ever had in the original series to match.
  • Goggles Do Nothing: That we know of.
  • The Grinch: A mild case as he doesn't appear to hate the holiday itself, just Santa.
  • His Name Really Is "Barkeep": "Professor" is not actually a title, but his actual name. Also a case of Steven Ulysses Perhero since he didn't have many options besides pursuing a scientific career with that name.
  • Hot Scientist: He has fangirls who will defend this trope.
  • I Got a Rock: His hatred of Santa comes from an incident in his childhood, where he asked for 12 cases of uranium-238 for Christmas, but instead got an infinite supply of socks.
  • Innocently Insensitive: He genuinely doesn't seem to realize how his blunt dismissal of Dib's theories about the paranormal could be seen as hurtful.
  • I Reject Your Reality: By the end of Enter The Florpus, he still refuses to believe anything alien he witnessed is anything more than a hallucination in an attempt to portray himself as an Only Sane Man while the rest of Earth likely thinks differently.
  • Jerk with a Heart of Gold: He can be quite cruel to his son and is often too wrapped up in himself to notice what is going on right in front of him, but he's a good man at his core who devotes nearly all of his time and energy toward the betterment of society and genuinely loves both of his kids.
  • Large Ham: Possibly the biggest one in the series. Considering the kind of world he inhabits, it's quite an accomplishment.
  • Like Father, Like Son: Similar to Dib, Membrane is intelligent, self-absorbed, neurotic, and mostly speaks at people while waving off or lashing out at them for their input.
  • Mad Scientist: He built a space-time object replacement device, a perpetual energy generator, and possibly cloned Dib.
  • Muggle: Eccentricities aside, he's one of the more normal seeming characters, strictly abiding by logic and science and often selectively oblivious to anything weird going on around him. Zig-Zagged at times, particularly when he creates an entire arsenal of high-tech weapons to fight Santa Claus, and especially in the movie where he reveals he has high-powered prosthetics and lays waste to Zim's robot army.
  • Mundane Utility: In the very first episode, in something of a Establishing Character Moment, he ignores his son's plea about hearing aliens so he can use an electrical welding device... to make toast.
    Prof. Membrane: Stand back son, I'm making...(sparks fly out-of-view, before saying triumphantly) toast! (Holds toast high in the air.)
    • A later episode credits him as being the inventor of "super-toast", which is shown to have some kind of unexplained muscle-enhancing properties, so it's possible that said toast was a surprisingly big deal.
  • No Mouth: It's covered up by the collar of his lab coat.
  • No Social Skills: Implied in Enter The Florpus, where Dib tells his dad that he wished, just once, that his dad would have his back. Professor Membrane, almost in a way where he's trying to reassure his son, retorts that "wishing isn't very scientific".
  • Not Now, Kiddo: Often he's too enthralled by his work to even pay attention to what Dib has to say, though he always keeps an ear out to make sure that he never raises the dead again.
  • Not So Above It All: Not only does he believe in Santa like the rest of the world, he has a mecha built to destroy him should the need arise. This is especially hilarious, because Dib is normally the one to point out "unrealistic" phenomena and he's the one who goes out of his way to capture and/or destroy it.
    • He also seems to get a chuckle out of the name Minimoose.
  • One-Man Army: We finally get to see him in action in Enter the Florpus, and he does not disappoint. He takes on an entire army of robots by himself, blasting out waves of energy powerful enough to level city blocks from his bare hands.
  • Only Sane Man: Convinces himself that he's this by the end of Enter The Florpuss by stating that everything alien he witnessed was a hallucination, but it's subverted in that he's the only one who thinks this delusion is accurate.
  • Papa Wolf: Even if he's convinced he's just experiencing a hallucination don't threaten his son with death by robots. He'll go One-Man Army to wipe them out.
  • Parental Favoritism: He seems to generally favor Gaz, though he doesn't hate Dib; he just thinks that he's crazy. ("My poor, insane son.") Just how bad it is depends on the episode. In Halloweenies, he listens to Dib explain he's slipping between dimensions because he messed with the Professor's inter-dimensional viewing device and then lets the apathetic psychiatrists sentence Dib to being sent to an insane asylum without a qualm. In Bad, Bad Rubber Piggy, though, after Dib gets killed by Zim's time travelling attacks, he scientifically revives his son and implants him into a protective suit of exo-armor — and when Zim starts hurling more pigs into the past to try and re-kill Dib, Professor Membrane responds by constantly upgrading Dib's exo-armor with bigger and badder weaponry. Enter the Florpus shows that he genuinely loves his son unconditionally, and suggests that his preferential treatment of Gaz has more to do with him having an easier time connecting with her than he does with Dib.
  • Parental Neglect: He loves his kids but his fixation with science means that he's hardly ever there for them.
  • Powered by a Forsaken Child: During Enter the Florpus, he invents "Membracelets" that expel waves of peace and happiness from the youthful energy of their users. Although, it should be noted that even after Zim hijacks them, they never actually hurt any of their hosts.
  • Reed Richards Is Useless: Parodied in "Future Dib", where he builds a Perpetual Energy Generator but then chooses not to activate it after determining that the world didn't deserve it. He surprisingly averts this trope outside of this instance, though, as he's noted to create and distribute world-changing inventions and medicines on an hourly basis.
  • Screw the Rules, I Make Them!: The reason he built a Perpetual Energy Generatornote  was because he started to question why an energy source needs fuel in the first place. Considering the angry shout he gave his assistants when questioning why, he probably did this off-screen.
  • Show Within a Show: The aforementioned Probing the Membrane of Science.
  • Silly Rabbit, Idealism Is for Kids!: While he believes in the limitless potential of "real" science, he has a dim view on more abstract and unreliable concepts such as wishing, friendship, and Santa Claus.
  • So Proud of You: In the unfinished episode "Mopiness of Doom", he has this reaction when Dib decides to stop chasing Zim and study "real science." During the climax of Enter the Florpus, he outright assures Dib that he's always proud of him.
  • Story-Breaker Power: He's a hyper-intelligent super scientist who has built, among several other things, a lever capable of restoring all of the power on Earth when pulled and a perpetual energy machine, can fire energy blasts from his hands, has the trust and support of all the world's leaders and the resources necessary to easily mobilize large-scale projects on a daily basis. Suffice it to say, the show wouldn't be especially interesting if Dib were to ever convince him that Zim was an alien in need of being stopped. Enter the Florpus pretty much proves this, where Membrane alone is enough to completely destroy Zim's robot army and recalibrate Minimoose to return the earth to its original location.
  • Strong Family Resemblance: From what we can see of his face, anyway, Dib takes after him a lot.
  • Supernatural-Proof Father: Taken to absurd extremes; Professor Membrane will deny the existence of the paranormal even when it's staring him directly in the face. In an ironic twist on the trope, he's anything but sensible and grounded, and is arguably just as outlandish as the phenomena he claims can't possibly be real.
  • Tap on the Head: Zim knocks him out and kidnaps him during the first act of Enter the Florpus. Membrane spends the rest of the special believing that a massive concussion is causing him to hallucinate aliens and spaceships.
  • Truly Single Parent: Allegedly, had the series continued, it would have eventually been revealed that Dib was an experiment created by Membrane (possibly Membrane's clone, given their resemblance). Where Gaz comes from in this scenario is open to speculation. Whether or not this is still considered canon with the release of the comics and later Enter the Florpus is up in the air.
  • Vocal Dissonance: As a child, he had the exact same voice he does now.
  • Wacky Parent, Serious Child: Not a perfect example, but his kids are at least more snarky and less hammy.
  • When You Coming Home, Dad?: He does genuinely love his children, but is almost always too preoccupied with his job as the most important man in the world to spend much time with them.
  • The Worf Effect: After showing his combat prowess in Enter the Florpus, Clembrane defeats him with a single blow.
  • Workaholic: Even when he's not working away from home, he's almost always shown in the middle of some kind of science experiment, and never seems to not be busy.
  • World's Smartest Man: Recognized as such in-universe, and while that isn't saying much, he is regularly shown to be genuinely amazingly intelligent and talented.

Irken Empire

    In General 
  • Abusive Alien Parents: Irkens don't form families or personal relationships. Young Irkens are spawned in incubation tubes and raised from birth to serve the Irken Empire.
  • Aerith and Bob: Irken naming conventions are...odd. We've met Irkens named Zim, Tak, Red, Purple, Miyuki, Spork, Skoodge, Sizz-Lorr, and Timmy.
  • Aliens Lack Attributes: According to the creators, they don't have reproductive organs.
  • Aliens Speaking English: Despite having their own written language, Irkens are always shown to speak English, even on their own planet.
  • Always Chaotic Evil: What else could you call a race of alien Galactic Conquerors?
  • Awesome Backpack: From birth, each Irken is fitted with a backpack-like device called a PAK that contains their memories, serves as a backup brain, and can be used as a Bag of Holding. However, the PAK is so essential to an Irken's life that they will die if separated from it for longer than 10 minutes. Also, if an unlucky Irken happens to be fitted with a defective PAK, they themselves are also considered defective (read: Zim).
  • Bizarre Alien Biology: Irkens are dependent on their PAKs to live, are allergic to water and meat, and have a large super-organ called a "squeedlyspooch" that fills their entire torso and performs most or all bodily functions.
  • Blue-and-Orange Morality: invoked According to Word of God, they are capable of feeling love, but it's unlike the type of love humans are familiar with. What exactly this means has not been elaborated on.
  • Culture Clash: Most Irkens show nothing but utter confusion/revulsion when dealing with alien cultures. Justified since their own society is a ruthless, racist, and imperialist military junta.
  • Cyborg: All of them are this because of their PAKs.
  • The Empire: It's in the name. Amusingly, the fact that the Almighty Tallest are actually puppets to the Control Brains suggests that their government is run in a manner more reminiscent of a modern constitutional monarchy than what this trope typically implies.
  • Evil Empire: Well, obviously.
  • Equal-Opportunity Evil: Female Irkens are shown serving as soldiers, invaders, and even the Almighty Tallest. That said, short Irkens suffer from constant discrimination within their society, with Skoodge in particular being treated like dirt in spite of being an excellent soldier simply because of his height.
  • Fatal Flaw: Pride. Virtually every Irken seen on the show is incredibly full of themselves, with it eventually leading to their downfall.
  • Fantastic Racism: Generally speaking, Irkens see all other life as utter filth only fit for being either Made a Slave or exterminated. That being said, some of their worlds (like Foodcourtia) suggest that their policies aren't always as extreme as that implies, with them being "fine" with other races as long as they serve the Empire's best interests.
  • Galactic Conqueror: The Irken Empire is hellbent on taking over every planet in the universe. And when we say "every", we mean every, with it being heavily implied near the end of the series that they've been steamrolling their way through most of the Milky Way with no signs of slowing down. Well, at least until Enter the Florpus, which has the Irken Armada and The Massive all sucked into the titular Florpus and basically derails Operation Impending Doom II for the foreseeable future.
  • Greater-Scope Villain:
    • The Control Brains, genetically altered Irkens encased in massive robotic forms, are the actual rulers of the Empire, with the Almighty Tallest as just figureheads (though they do still hold not-insignificant power on their own).
    • Likewise, there's Tallest Miyuki, one of the Tallest before Red and Purple, and the one responsible for the Irken Race's massive technological advantage.
  • Invincible Villain: Despite being led by the glaringly incompetent Red and Purple, it's made clear that no race in the universe really stands any kind of chance at stopping the Irkens' intergalactic conquest, with all who attempt to resist them being instantly squashed like bugs. The only thing that seems to truly pose any threat to them is Zim's stupefying incompetence. This is possibly subverted after Enter The Florpus, though, as the Irken Armada and The Massive are all sucked into the Florpus and the fate of the Irken Empire is left completely up in the air.
  • Large and in Charge: The hierarchy of Irken society is based on height. The tallest individual in a generation becomes the Almighty Tallest. Taller Irkens are given more important duties, while shorter Irkens are assigned to menial jobs such as food service.
  • Laughably Evil: As a whole. Sure, they might all be Always Chaotic Evil Galactic Conquerors, but they're just so damn hilarious at the same time!
  • Little Green Men: They resemble a human's stereotypical idea of aliens, with green skin, solid-colored eyes, and a pair of antennae. In a particularly notable riff on this trope, their society determines authority based on height.
  • Master of Disguise: With a few notable exceptions (i.e., Tak), this is amusingly subverted with most Irken Invaders. Despite possessing sufficiently advanced holographic technology that would allow them to perfectly disguise themselves as natives of the planet they are currently conquering, most Invaders are so comically ultranationalistic and bigoted towards non-Irkens that they don't want to "sully" their true forms and instead take up Paper Thin Disguises, which all seem to rely on the natives holding the Idiot Ball to not notice.
  • No Blood Ties: Irkens are grown in jars and enter military training immediately after "birth." They nevertheless seem to have familial feelings, since Zim considers the "cold, unfeeling robot arm" that activated him as his parent.
  • Not-So-Harmless Villain: It can be hard to remember at times that for all of their childish egotism and revolting decadence, they're also basically an entire species of ruthless sociopaths that have been conquering the entire Milky Way with no signs of slowing down anytime soon.
  • Orbital Bombardment: Referred to as the "Organic Sweep," this has the Irken Armada bombarding a newly-conquered planet from orbit so as to cleanse their new conquest of all organic life and make it fit for Irken colonization.
  • Paper-Thin Disguise: It's a relatively minor Running Gag that Invaders wear absolutely horrible disguises to fit in with the natives of the planets they're trying to conquer. Notably, Zim actually comes across as one of the more competent in terms of disguising his alien form here... at least when compared to, say, Invader Slacks, who infiltrated the Large Nostril People of Boodie Nen by just sticking an absurdly big set of prosthetic nostrils to the front of his face.
  • Pragmatic Villainy: Instead of fighting against the Planet Jackers, the Irkens instead just have a treaty with them for the Jackers to leave any planet marked by the Irkens for conquest alone, apparently having decided that a war with them wasn't worth the effort. Relatedly, they don't seem to want to always wipe out any non-Irken life when they can instead be used to serve the Empire's best interests (i.e., the Vortians being enslaved as Mad Scientists to help the Irkens develop better war machines).
  • Riddle for the Ages: It has never been explained how the Irken race became completely dependent on artificial reproduction to survive (to the point of modern Irkens lacking reproductive organs).
  • Sigil Spam: They put the Irken insignia on all their stuff. "Battle of the Planets" even shows that they first bomb the Irken insignia into the surface of planets they've recently conquered.
  • Single-Biome Planet: Parodied, with the Irkens often devoting entire planets to utterly pointless and meaninglessly singular objectives. For instance, Blorch is designated to serve as a "parking structure planet" after it's conquered.
  • Technicolor Eyes: Most Irkens have red eyes, with a few having purple instead. There are a few other colors that show up even more rarely, including green, blue, and brown.
  • Uncertain Doom: As noted below, the Irken Armada gets sucked into the Florpus along with the Massive and the Almighty Tallest during Enter The Florpus, leaving the fate of the entire Irken Empire unknown.
  • Undying Loyalty: Due in part to them all being Cyborgs, the average Irken has a near-fanatical loyalty to the entire empire. It's quite a pity that their leaders typically don't return the favor.
  • Unskilled, but Strong: They vastly misuse their resources, have absolutely no tactical skills, and are a massively shallow race that values physical height and size more than anything (to the point where their Mothership is called The Massive). That said, their massive technology advantage over every other race in the universe keeps them on top.
  • Women Are Wiser: One of Red and Purple's predecessors, Tallest Miyuki, is implied to be female from her name. She's also massively more competent than Red and Purple, being why the Irken Armada has incredible technology.

    The Almighty Tallest
Voiced by: Wally Wingert (Red), Kevin McDonald (Purple)

Red: "The universe will be ours for the taking! It's only a matter of time before all the races of the Universe serve the Irken Empire!"
Purple: "I'll have them serve me the curly fries."

The leaders (figureheads, really) of Irken society. Their height is their only qualification for office, so they're not veryy well-equipped in the brain department, although Red seems to have it together better than Purple. They usually sit around snacking and acting like jerks, similar to a pair of teenage bullies picking on and bossing around a group of younger kids.

Red and Purple weren't the first Tallest. Some of the previous leaders were slated to appear in flashbacks if the show hadn't been canceled.

The proper way to address the Almighty Tallest is "My Tallest", the equivalent of "Your Majesty" (or, perhaps more accurately, "Your Highness") on Earth. As a general rule of both grammar and respect, "My Tallest" is never pluralized, even when more than one Tallest rules.

  • Adaptational Dumbass: They were never the brightest bulbs in the series proper, but fly straight into Too Dumb to Live territory in Enter The Florpus when they refuse to fly out of the path of the Florpus Hole despite there being plenty of time to do so, resulting in both them and the entire Irken Armada suffering a Fate Worse than Death.
  • Adaptational Jerkass: The Tallest are much less subtle about their hatred of Zim in Enter The Florpus, to the point that they ultimately decide to blow up the Earth just to be rid of him once and for all.
  • Aliens Speaking English: Like all Irkens, they inexplicably speak perfect English.
  • All There in the Script: Their real names are Red and Purple (guess which is which).
  • Ambiguous Robots: It's not clear whether they're cyborgs or organic beings wearing mechanical armor.
  • And I Must Scream: Their final fate in Enter the Florpus is to be trapped in the titular hole, a swirling void of infinite realities crashing into and off of each other. We last see them in some kind of puppet hell dimension, screaming in horror as they burn. Zim, of course, sees nothing strange about this.
  • Art Evolution: In Enter the Florpus, instead of just having two very long, seemingly metallic prosthetic fingers on their hands like they did in the series, their hands now resemble Zim' short black gloves with stubby claws and even featuring visible thumbs. Also, their skin is slightly paler, their armor is darker, and their spines are pinker.
  • Asshole Victim: Their ultimate fate in Enter the Florpus, namely ending up trapped there after trying to destroy Earth just to finally be rid of Zim.
  • Bad Boss: They both treat their underlings terribly, but Purple especially seems to enjoy shooting them out the airlock.
  • Bait the Dog: Played for Laughs in the unproduced episode "The Trial". They gently explain the process of Irken existence evaluation to a young Irken child, and then send him to the dungeons for knowing too much.
  • Bare Your Midriff: Their "Tallest" outfits sort of have this look going for them.
  • Big Bad Duumvirate:
    • For the franchise as a whole. Because of their matching height, they're both the official leaders of the Irken Empire. Unofficially, Red is the more domineering and competent of the pair.
    • In Enter The Florpus, they form a rare Big Bad Triumvirative with both Zim (who is responsible for all the film's mayhem) and the Florpus itself; the Tallest intend to blow Earth up just to finally be rid of Zim, and the Florpus is a Negative Space Wedgie that threatens to suck the Earth in and scatter it across infinite realities.
  • Big Eater: Usually shown eating their own weight in junk food.
  • Brilliant, but Lazy: "Backseat Drivers From Beyond the Stars" reveals that Red can be a surprisingly capable leader when his life is in immediate danger. Otherwise, he'd much rather kick back and gorge himself while letting his underlings take care of the hard work.
  • Buffy Speak: Despite otherwise being the smarter of the two, Red is consistently shown to be a lot less articulate than you'd expect from a (figure)head of state. This is perhaps best when he takes charge in "Backseat Drivers From Beyond the Stars" and refers to the enormous laser that he calibrates the Massive to fire as "Some kind of... Laser thingy".
  • Butt-Monkey: Purple has shades, mostly due to Red's abuse of him.
  • The Caligula: Both of them are selfish, lazy and generally incompetent despots, though Purple seems especially useless. They don't even respect the traditions of their position, and somehow cheated their way out of having to amputate their thumbs after being named Tallest.
  • Color-Coded for Your Convenience: Named after their eye colors.
  • Crouching Moron, Hidden Badass: "Backseat Drivers From Beyond the Stars" shows that Red can be a genuinely competent commander when he has to. This does not apply to Purple.
  • Culture Clash: They are absolutely floored when Zim explains to them that adult humans are generally much taller than Irkens, but are also incredibly stupid. This flies completely in the face of Irken societal ideas, so they have trouble wrapping their minds around it. This is also literally the only time in the series taht they actually pay attention to Zim, the concept is just that alien to them.
  • Deadpan Snarker: This, hysterical laughter or blank shock is how they usually react to Zim's antics.
    (Zim's base explodes during a video conference)
    Purple: Well, you look real busy exploding, Zim...
    Red: What a shame, moving on now...
  • Divergent Character Evolution: In the first episode they each got alternating moments of stupidity and intelligence. By "Backseat Drivers from Beyond the Stars", Red seems to have settled into "The smarter one", though he still prefers to laze around with Purple.
  • The Dividual: While they do develop more distinct traits over time (Red becomes the more intelligent and domineering one while Purple becomes TheDitz bordering on Cloudcuckoolander), they still have very similar personalities, look almost exactly alike, and are never seen apart.
  • Dreary Half-Lidded Eyes: Both their eyes are almost always half-shut, characterizing them as as smug, snarky, and exhausted by Zim's antics. Since their lids also slant inwards, they also have slight Tsurime Eyes fitting their exasperated demeanors.
  • Even Evil Has Standards: Played for Laughs in "Germs", when both are deeply unsettled by Zim's germaphobia-induced Sanity Slippage.
  • Everyone Calls Him "Barkeep": They're only ever referred to as "The/My Tallest" in the series.
  • Evil Empire: The figureheads of the Irken Empire.
  • Evil Is Bigger: They're called the Almighty Tallest for a reason.
  • Evil Is Hammy: They're the leaders of a race known to subjugate other planets and are some of the hammiest characters in the show.
  • Evil Overlord: The emperors of the Irken Empire.
  • Fate Worse than Death: Their eventual fate at the end of Enter The Florpus. After constantly refusing to move around it, they fly straight into it and are torn across different realities.
  • Faux Affably Evil: They're lazy and generally genial, but that won't stop them from committing genocide or having their own soldiers Thrown Out the Airlock for not being tall enough.
  • Fingore: invoked They only have two fingers on each hand, as opposed to a normal Irken's three. According to the Invader Zim Wiki, the production staff have said that when a Tallest is chosen, their thumbs are ritualistically severed to prove that they can rule without them. However this has been Averted by the current Tallests, Red and Purple, who instead hide their thumbs inside their massive gauntlets.
  • Freudian Excuse: If the unproduced "The Trial" counts as canon, they witnessed their two previous Tallest die because of Zim. As such, their mistreatment of him at least might stem from fear that they'd suffer the same fate.
  • Galactic Conqueror: Their and their species' entire motivation is galactic domination. Invaders are used to infiltrate planets and prime them for invasion from within. Afterwards, they tend to use them for mundane activities like serving junk food or parking structures. They're also not averse to just blowing up random planets in the way of their flagship.
  • Greater-Scope Villain: While not intentional, they're the reason Zim is trying to take over Earth. Honestly, they weren't sure anything was ther, nevermind a planet; they just wanted Zim oout of the way while they conquered the rest of the universe.
  • Hate Sink: Comedic moments aside, the Tallest are both callous, genocidal, utterly unsympathetic cowards who horribly mistreat even their most loyal soldiers, and actually make Zim himself look sympathetic by comparison. It's pretty telling that the vast majority of the the Tallest's jokes involve them getting a blast of karma to the face.
  • Heterosexual Life-Partners: invoked Fans debate whether they're this, twin brothers (from the same cloning tube, maybe?) or gay lovers. More obvious in the comics, where they are shown playing together.
  • Hidden Depths:
  • Honor Before Reason: In Enter the Florpus they refuse to diverge from their projected course, a straight line, because "turning is stupid." Even though they have more than enough time to get out of the way of the titular Florpus, they continue on in a straight line to their doom.
  • Hyperactive Metabolism: They remain rail-thin despite constantly putting away enormous amounts of junk food. It's possible that their bodies aren't entirely organic.
  • Irony: They only became rulers or Irk because Zim accidentally killed the last two. Now they have to constantly deal with the destructive individual who made their ascension possible. Granted, as mentioned, said individual was responsible for the deaths of the last two individuals to hold their position, so it's only natural they'd want to get rid of him for reasons beyond personal annoyance.
  • Inadequate Inheritor: Unreleased episodes would've implied that their predecessor, Tallest Miyuki, was a much more capable leader. She was the one commissioned the Massive, while as far as the audience knows, these two don't have one accomplishment to their names.
  • Jerkass: Along with being a pair of genocidal Evil Overlords, they're also generally lazy, selfish assholes who can barely stand each other, let alone anyone they consider beneath them (as in, everything else in the universe).
  • Jerkass Has a Point: Given what we see of Zim’s actions during Operation Impending Doom I, it’s hard to argue that Zim didn’t deserve to be banished. Honestly, he probably got off easy. It’s also easy to see why they trust him as an invader after this, and Zim’s antics do tend to create more problems for the Irkens than they solve.
  • Karma Houdini: Well, except for "Backseat Drivers from Beyond the Stars". Finally averted in comic Issue #4. Their game of torturing Zim with a large Cheese Puff literally blows up in their faces. Further averted in the movie.
  • Karma Houdini Warranty: After having escaped the series itself unscathed due to its cancellation, the Tallest finally get their comeuppance in the movie nearly two decades later: Namely, being trapped in a hellscape thanks entirely to their own stupidity and stubbornness, with traumatic — and potentially fatal — results.
  • Killed Offscreen: They're obviously in distress at the end of the movie, and Jhonen confirmed during th Pixelatl México stream that they died. He then mentions the show's Negative Continuity and tendency to bring characters back from the dead with no explanation in the same breath, so whether they'll stay dead is up in the air.
  • Large and in Charge: They're the leaders of their race because they are the tallest.
  • Laser-Guided Karma: In Enter the Florpus they end up doing the eponymous action, meaning they've entered what essentially boils down to an indeterminate period of incredible pain at best and a wackier-than-usual death-by-black-hole at worst. Their final transmission seems to show them either trapped in or passing through a hellscape.
  • Laughably Evil: They might be genocidal sociopaths who treat their own people like shit, but they also provide some of the funniest moments in the series.
  • Law of Chromatic Superiority: Red is smarter, more competent, and more domieering than Purple.
  • Lazy Bum: Neither of them ever do much in the way of leading, instead spending most of their time snacking and goofing off, and they tend to show aggravation whenever they are forced to actually do something. Operation Impending Doom II itself could be viewed as a product of their laziness: send out invaders to conquer planets for them ahead of time so that they don't actually have to do anything when they get to them. This ends up bringing them their doom in Enter the Florpus, where their refusal to make the small effort to steer The Massive out of the way of the Florpus ends up getting them and the entire Irken fleet trapped in an interdimensional hellscape for what may be eternity.
  • Lean and Mean: In addition to being the tallest Irkens, they're also rail-thin despite how much they eat.
  • Let's Get Dangerous!: "Backseat Drivers From beyond the Stars" shows that Red can be a surprisingly competent and level-headed military commander when his life is directly threatened.
    • It's also amusingly subverted in the same episode for both of them. After being utterly humiliated by the Resisty and tossed around like pinballs for most of the episode due to Zim's actions, they contact him on a video call with the express purpose of making "our friend Zim hurt." Unfortunately for them, their video call is instead "answered" by Zim getting attacked by his own brain parasite while GIR and Zim's robotic parent decoys rampage through Zim's base. The Tallest lapse into horrified/baffled Stunned Silence, right before Purple runs offscreen to throw up.
  • Make It Look Like an Accident: They've repeatedly tried to do this to Zim, so as not to directly implicate themselves in his demise, be it sending him off on a Snipe Hunt in the hopes that he'll die en route to trying to have him killed at boot camp. By Enter the Flopus, however, Zim teleporting the Earth directly into The Massive's flight path has them decide to forgo discretion completely and just blow up the planet so they never have to deal with him again.
  • Meaningful Name: Red is the first color of the rainbow and purple is a color often associated with royalty.
  • Moral Myopia: Averted. While the Irkens treat all other races as nonentities, the Tallest have no qualms about shooting their own people out of cannons or airlocks. One at least can't fault them for hypocrisy there.
  • Not-So-Harmless Villain: Par for being part of the Irken race, their childish egotism and hedonism masks their ruthlessness and greed.
  • OOC Is Serious Business:
    • It really says something about how furious they are with Zim in "Backseat Drivers From Beyond The Stars" when Purple (normally The Ditz of the two) starts to show some Tranquil Fury while Red (who has always been the more open of the two in their hatred of Zim) cheerily asks The Massive's technicians to "give our friend Zim a call."
    • Similarly, them deciding to simply destroy the Earth once it appears in The Massive's flight path so as to destroy Zim once and for all instead of Making It Look Like An Accident helps show just how profoundly fed up they are with Zim's antics and that they now just want to kill him no matter what.
  • Only Sane Man: Heavily downplayed, but Red generally serves as not only the Straight Man to Purple's Cloudcuckoolander tendencies, but also as one of the more level-headed Irken leaders (his own foolishness and laziness notwithstanding), and is typically the one to grab the Sanity Ball in interactions between the Tallest and Zim/other Irkens.
  • Orcus on His Throne: They don't do much except lounge around their mothership.
  • Palette Swap: Of each other.
  • Pet the Dog: They occasionally have moments, generally directed at each other, that show that they have some capacity for good will:
    • Red gets angry at Zim for denying Purple a planetful of snacks in "Tak: The Hideous New Girl".
      • In the same episode, Red affectionately pats Purple on the shoulder after smacking him over the head with his own puppet.
    • At one point, they let Zim talk about humanity and seem quite intrigued by it. More specifically, they're fascinated by his claims of humans being taller than Irkens and yet still utter idiots.
    • They also allowed Zim to give his show on Probing Day, despite openly hating him (They planned to fail and pummel him regardless, but still).
    • Amazingly, they even have one that has nothing to do with either of them, or even their species: At the beginning of "Invasion of the Idiot Dog Brain" a young human boy wanders into Zim's base, followed shortly by his mother. She scolds him for wandering off, he cheerfully declares that he missed her, and the two leave. Purple smiles and says he's "glad it had a happy ending after all." Red, also smiling, agrees.
  • Psychopathic Manchild: Despite being the sociopathic overlords of the most powerful known race in the galaxy, they mostly act like a pair of lazy, arrogant and stupid teenagers. They love sweets and junk food, bicker over simple things, and make their servants present their planet-conquest strategies with puppet shows. Heck, their dynamic with Zim can best be described as two Big Brother Bullies and their Annoying Younger Sibling.
  • Pointy-Haired Boss: Their only qualification for their job is their height. Fortunately for them, that's the only qualification that matters in Irken culture.
  • Purple Is Powerful: Purple, of course.
  • Red Eyes, Take Warning: Red, of course.
  • Slouch of Villainy: Their designs always make them look slightly hunched over, even in "The Nightmare Begins."
  • Smug Snake: They're extremely arrogant and absolutely certain that nothing stands a chance of getting in their way of conquering the universe. While the Irken Empire is incredibly powerful, that fact is rather clearly unrelated to their incompetent despotism.
  • The Sociopath: Don't be fooled by their laid-back laziness, as these guys are genocidal dicks.
  • Sweet Tooth: It goes in hand with their Big Eater status — although it's possible that what humans consider junk food, Irkens consider healthy.
  • Thrown Out the Airlock: Purple especially seems to enjoy doing this.
  • Too Dumb to Live: Taken to its logical conclusion in Enter the Florpus, where they refuse to steer their ship around the deadly Florpus hole since it would mean not going in a straight line. They get sucked into it and end up being burning alive in some kind of puppet Hell.
  • Uncertain Doom: As of the ending of Enter the Florpus, they are shown burning in a puppet-like alternate reality. Whether they ultimately perish in the Florpus, are stuck there alive for eternity, or somehow pass through and escape — into their own reality or another — remains unknown. The fact they're able to receive a transmission indicates that, at the very least, they're still on the Massive, which may be their only hope for survival. And even if they do make it out, they'll undoubtedly be traumatized for life.
  • Vitriolic Best Buds: Of a sorts. They spend a lot of time together and often play harmful pranks on one another.
  • Vomit Discretion Shot: Purple's reaction to the parasite eating Zim's brain at the end of "Backseat Drivers from Beyond the Stars."
  • While Rome Burns: They lounge around stuffing their faces with junk food while their people invade other planets.
  • Would Hurt a Child: They send young Irkens to invade dangerous planets and seemingly don't care if they die along the way.
  • You Don't Look Like You: Red's Series 2 Palisades toy gives him darker skin than Purple.
  • Younger Than They Look: They look older than Zim, but the script for the unproduced episode "The Trial" reveals that the three are actually all about the same age.

    Invader Skoodge
Voiced by: Ted Raimi

"So that no Irken boot has to come in contact with any unsavory alien filth! HOO-HA!"

An incredibly short Invader, and perhaps the closest thing that Zim has to an actual friend. Had the show continued, he would have become a reoccurring character, and lived in Zim's basement.

  • Affably Evil: He doesn't really come across as being evil for its own sake, but Irkens in general seem to have an Always Chaotic Evil bent and at the very least he is complicit to genocide.
  • Butt-Monkey: He was sent to a planet of Slaughtering Rat People, used as artillery against said planet after he pacified it, and then had his achievement given to someone else.
  • Chuck Cunningham Syndrome: With the exception of a variant cover for Issue #10, he's absent from the new comics.
  • Crouching Moron, Hidden Badass: He's the first Irken Invader to single-handedly complete his mission, and he survived being on a planet as it was being blown up. If it wasn't for his gullibility, he'd be an Irken to be reckoned with.
  • Made of Iron: Even more so than Zim, Dib, and Keef combined.
  • No Respect Guy: In spite of his accomplishments, the Tallest still treat him like crap because he's short.
  • Offscreen Moment of Awesome: We never get any indication of how exactly he managed to conquer Blorch, home of the Slaughtering Rat People, but he did it.
  • The Pig-Pen: Quite downplayed, but his uniform is consistently dirty and covered in splotchy stains.
  • The Dog Bites Back: The unfinished episode Day Of the Spookies actually has him take pleasure in tormenting Zim when the two pretend to be ghosts on Mysterious Mysteries, and eventually leave him to be hauled off for study when things go south.
  • Undying Loyalty: Even with how the Tallest and Zim treat him, he's still determined to prove his worth and risks life and limb to please them. Although it's shown even he has his limits.
  • Unexplained Recovery: Blatantly and repeatedly. He often appears to get killed only to later return alive and well with no explanation for his survival.

Voiced by: Olivia d'Abo

"NO, IT ISN'T REVENGE! It's about taking back what's mine, you delusional twit! I should have been an Invader! I should have been part of The Great Assigning! I shouldn't have to be stealing this planet from you!"

A female Irken out to seek Zim's mission and prove herself as a worthy Invader to the Tallests. Fifty years ago, Zim caused a blackout that caused her to miss her test to become an Irken-Elite. Not to be confused with the main character of another Nick franchise, Tak and the Power of Juju.

  • Aliens of London: Tak has a British accent while none of the other Irkens do.
  • Badass Longcoat: Both her disguise and her Irken uniform resemble a tailcoat in the back.
  • Beauty Mark: She has one under her eye, in both her normal state and human disguise.
  • Berserk Button: She gets visibly enraged when Sara teasingly calls her Zim's "girlfriend", although she doesn't explode, since it would blow her cover. Instead, she uses her Compelling Voice to make Sara apologize and eat her own eraser.
  • Best Served Cold: Tak wants to conquer Earth before Zim, since Zim was the one who made her fail her military exam and sent her to work as a janitor on Planet Dirt for fifty years. She actually doesn't view it as revenge so much as setting things right, though—as she (correctly) points out, she's a highly competent invader who deserved to get assigned a planet, while Zim was sent there just to get him out of the Almighty Tallests' antennae.
  • Boyish Short Hair: In her human disguise mode, she sports a spiky and punky bob cut.
  • Butt-Monkey: Somewhat, particularly being exiled from her planet despite being an excellent invader but Zim's idiocy caused this, and getting thwarted by Zim and being almost killed in a spaceship crash. Tak just couldn't catch a break.
  • Cats Are Mean: Her S.I.R. Mimi takes the guise of a cat, and is nasty powerful enough to kick Zim and GIR's asses.
  • Compelling Voice: It only works on idiots though.
  • Evil Brit: She is not a Brit of the humans, although her accent is clearly British.
  • Eviler Than Thou: To be fair, not eviler than Zim, just more competent.
  • Evil Laugh: It's so hideous in contrast to her appearance.
  • Evil vs. Evil: Her conflict with Zim, since both of them want to conquer the Earth.
  • For Want of a Nail: Had Zim not decided to use a Humongous Mecha to retrieve a bag of chips from an obstinate vending machine, Tak likely would have passed her exam and wouldn't even know who Zim was, let alone his activities on Earth.
  • Freudian Excuse: Zim inadvertently ruining her chance to become an Irken Elite and getting her exiled to the planet Dirt as part of the janitorial staff spurred her quest to prove herself a real Invader by usurping Zim's intended target of conquest and actually turning it into something valuable for the Tallest.
  • Hypnotic Eyes: Tak seems to possess these in the form of some sort of device in or near her eyes. While in disguise, a flash of her eyes allows her to erase short-term memories of her victims (unless their mind is too strong, like Dib's and Gaz's were) and, in one case, impose her will over others.
    Sara: Looks like Zim has a girlfriend!
    Tak: It's not NICE... to embarrass people! You should apologize... and... (eyes flash) eat your eraser!
    Sara: (with Mind-Control Eyes) Yes, Tak! I'm sorry, Zim. (takes a bite out of her eraser)
  • Irony: Had Zim not stopped her from taking the exam, she might've wound up among the invaders he blew up in Operation: Impending Doom 1.
  • Knight of Cerebus: Tak is certainly a MUCH bigger threat to Earth than Zim. And comes very close to accomplishing her plans.
  • Large Ham: It leads to Ham-to-Ham Combat when she argues with Zim.
  • Loving Bully: Completely subverted and played for laughs. Zim's conclusion that Tak, while disguised as a skool girl, physically abuses him because she's in love with him is just a sign of his Insane Troll Logic. She really does just despise him and only uses his efforts to study "pain-based Earth affection" to torture him for giggles.
  • Mirror Character: For as much as she likes to claim she's Zim's superior, they both shirked menial roles assigned to them (Zim's indentured employment on Foodcourtia and Tak's temporary janitorial duties on Planet Dirt) for what they perceived to be faster routes to glory. Interestingly enough, both their respective exiles are also technically Zim's fault: Zim got himself exiled for blowing up the invasion fleet during the previous invasion, and Tak was only exiled because Zim's stupidity prevented her from getting to her final exam on time.
  • More Deadly Than the Male: And how!
  • Motive Rant: She at one point goes on a rant on how she hates Zim for ruining her life and wants to make him pay for it.
  • No, Except Yes: She insists that she isn't after Zim for revenge, but that she is going to steal his mission in particular rather than that of any other invader.
  • Nothing Personal: While Tak doesn't deny that she hates Zim, she insists her plan isn't about revenge per se, so much as proving that she's worthy of being an Invader while he isn't.
  • Purple Is Powerful: Instead of the standard dark pink Irken uniform, she wears a purple one. Her eyes and the spots on her PAK are purple too.
  • The Rival: She's Zim's rival in the invasion of Earth.
  • Revenge: She claims her plan to usurp the conquest of Earth from Zim isn't about revenge but about making things right by proving she's a real Invader while Zim is just a joke. However, she is open on how much she loathes Zim and enjoys making him suffer. In fact, it's telling that rather than choose any other unclaimed planet that could be more appealing to the Tallest, she chose the backwater far-off Earth where Zim is, despite being clearly aware he was sent there by the Tallest to be rid of him. note 
  • Sliding Scale of Villain Effectiveness: She's essentially a competent, intelligent version of Zim.
  • Spell My Name with an "S": Is her SIR unit named Mimi or MiMi?
  • Tertiary Sexual Characteristics: Female Irkens have long eyelashes and curled antennae.
  • Villains Blend in Better: Or in this case, Competent Villains Blend In Better. Her human disguise is far more convincing than Zim's, which says more on the latter given how well the other invaders were doing.
  • We Will Meet Again: The last thing she says to Zim before he launches her into space. Had the series continued it was intended for her to come back as a recurring villain, but the closest she gets to returning in the show proper is her ship's presence, since it has an artificial intelligence copied off of her own brain.
  • Women Are Wiser: She's the only prominently-featured female Irken, and is significantly more competent than Zim or the Tallest are.
  • You Gotta Have Blue Hair: Her human disguise.

    Tak's Ship 
Voiced by: Olivia d'Abo, Andy Berman

"DIB! Your face is STUPID!"

The modified Spittle Runner Tak used to make her way to Earth. After she was defeated, Dib keeps it within his family's garage to further modify it and study Irken technology. After being reactivated, however, it's discovered that the ship's autopilot runs on a copy of Tak's personality, and is hesitant to allow anyone but Tak to even sit in itself, let alone pilot it.

  • A.I. Is a Crapshoot: The ship is able to copy the memories and personality of its user. However, without proper training and an environment to understand what's going on, it will likely go mad trying to understand what it even is.
  • Brain Uploading: It's able to utilize the brainwaves of its pilot as its primary AI, effectively becoming a robotic clone of them.
  • Cloning Blues: After Dib attempts to become its pilot by overwriting the AI derived from Tak with one made from his own brainwaves, the ship is wholeheartedly convinced that it is Dib.
  • Driven to Suicide: After running on a copy of Dib's brain that is then brainwashed by Zim, the real Dib tries to break it out of the mind control. While it remembers everything, it also concludes that such a life is so horrible that it would rather delete its own personality data.
  • Enemy Mine: Though it confesses that it hates Dib, it also acknowledges that it hates Zim more, and agrees to help Dib and Gaz with the understanding that it'll hurt Zim.
  • Sapient Ship: The ship is not afraid to speak its mind at any given moment it's active. And that usually means voicing its displeasure at Dib or any other humans riding in it.
  • Sentient Vehicle: An alien spaceship with a fully independent AI.
  • Token Evil Teammate: In Enter the Florpus, the ship teams up with Gaz and Dib to save the Earth but it's clear that the ship is only doing it because of its hatred for Zim.

Voiced by: Jim Wise

"Nobody escapes from Sizz-Lorr. I will find you, Zim. I will search all of space's dark corners to hunt you down. AND I WILL FIND YOOOOOUUUUU!!!"

Zim's boss during his exile on Foodcourtia, an Irken frycook who runs Foodcourtia's premier restaurant. After Zim escaped the planet, Sizz-Lorr swore to make him come back if it was the last thing he did.

  • Almighty Janitor: He is the biggest, strongest, and probably the most powerful Irken ever seen in the show. And his job is being a fry cook. Though in his defense he is the highest ranking Fry Cook in the entire Irken Army, and given that the Food Court Planet is often used as a punishment, the position of head Fry Cook may function as a warden.
  • Bad Boss: Played With. On the one hand, he took a good deal of delight in making Zim suffer and working him hard. On the other hand, Zim was sent there as banishment for nearly destorying their peoples' civilization without regret. As such, Sizz-Lorr's behavior could not only be justified, but also appropriate since he is not just Zim's boss, but more accurately his parole officer or even prison guard/warden.
    • Benevolent Boss: He seems to be a pretty decent and reasonable boss over to his employees, i.e. the people he actually hired rather than Zim, who is his prisoner.
  • Big "YES!": He yells "Yes" in response to Zim's Big "NO!" at having to work for him again.
  • Chef of Iron: The natural result of combining his role as a chef and a badass. He even suits up in battle armor with a giant spatula as a weapon.
  • Clark Kenting: Zim was unable to recognize him without his fry cook hat. And Sizz-Lorr was wearing his name tag.
  • Genius Bruiser: Along with having the usual Irken technological prowess, he's huge, enormously strong and a skilled fighter. He's also one of the few characters who is distinctly not an idiot.
  • Improbable Weapon User: His laser-spatula...thing.
  • Large and in Charge: And how - he is taller than any other Irken we have ever seen, perhaps even surpassing Tallest Red and Purple.
  • Large Ham: It's a given that he'd be yet another hammy character.
  • Nice Hat: His frycook hat.
  • Paper-Thin Disguise: This is a funny one. At first, it makes sense that Zim doesn't recognize him: while he is a very large guy, he's also wearing a gas mask and bodysuit. Then he reveals his face. Zim doesn't catch on. Then he takes off the suit, and changes into his fry cook outfit. Zim still doesn't get it. Then he puts on a nametag. Zim's still unable to place him. It's only when he finally puts on his tiny paper hat that Zim puts two and two together.
  • Punny Name: Sizz-Lorr. Sizzler!
  • Red Eyes, Take Warning: After he finds out that Zim is gone in the flashback, his eyes momentarily glow red.
  • Riddle for the Ages: Why is an Irken who is even larger than the Almighty Tallest and several times more competent working in fast food? Was he exiled like Zim? Does his weight counterract his height in the eyes of Irken society? Is the position of Frylord seen as just that sacred? The world may never know.

    Vortian Prisoner 777 
One of the Vortian military researchers used by the Irken Empire to produce their tech and weaponry, kept as a prisoner. He copes with this by making... interesting design decisions in Irken weapons, and trusting them to Zim, who he knows full well will do something horrible with them.
  • Gadgeteer Genius: A seemingly common trait for Vortians, who have provided Zim with many idiotic devices that seem outright designed to kill whoever uses them, such as the malfunctioning santa suit Zim uses in the christmas special, and probably the megadoomer.
  • I Have Your Wife: How Zim gets said gadgets from him - he has 777's children stuck in a tube with an "Erase Children" button attached.
  • No Name Given: We never learn his real name.
  • Sarcastic Devotee: He's very happy to help Zim. For a given value of "help."
    777: "(Sarcastically hammy tone) That would be wrong! It'd infuriate the armada! (Suddenly helpful) I helped design that ship, you know. **Beat** Here you go!"
  • You Are Number 6: Is only ever referred to by his prison number.


    Miss Bitters
Voiced by: Lucille Bliss

"The universe is doomed. Doomed! DOOOOOOOMED!... Go home now."

Teaches Zim and Dib's class.

  • Ambiguously Human: She's almost definitely not, but we're not quite sure what she is. Sunlight burns her. Although, in the Halloween special she says she was a Fairy Princess once.
  • Anti-Villain: She doesn't seem to be outright evil, just extremely nihilistic and apathetic, and doing what's necessary to keep the Skool in check.
  • Chuck Cunningham Syndrome: Due to her death, Miss Bitters just made a non-speaking cameo at the beginning of Enter the Florpus.
  • Devil in Plain Sight: She does little to nothing to hide how inhuman she is, but no one seems to be even remotely aware of her monstrous nature. Even Dib is convinced she's just just a normal, if very creepy, old woman.
  • Even Evil Has Standards: Despite the obvious hatred she has for her students and all the horrible stuff she's told them before, she refused to divulge just what happened that led people to start giving out meat on Valentine's Day. Her response to Dib's question was "you don't want to know". She even expressed "moral outrage" to the principal allowing the kids to celebrate the holiday.
  • Evil Old Folks: While not evil per se, she's cantankerous and lives up to her name.
  • The Fair Folk: If what she said about formerly being a fairy princess is true, she is most certainly this rather than the friendlier type.
  • Hates Everyone Equally: She hates her students, she hates their parents (who used to be her students), she hates the world she inhabits, and she hates the entire universe.
  • Hidden Depths: For someone as perpetually angry, nihilistic and mean-spirited as Miss Bitters, she occasionally comments on how she used to have hopes and dreams, and that the world wasn't always such a hellhole in her time. She even apparently used to love someone.
  • Humanoid Abomination: According to one source, Miss Bitters didn't come to teach, as she's always existed on that land... the school was simply built around her.
  • Leitmotif: Her presence often comes with the sound of cicadas.
  • Living Shadow: She sometimes sneaks up on people by becoming their shadow. Literally.
  • Meaningful Name: Her name reflects her bitter, nihilistic attitude.
  • Multiple-Choice Past: She was supposedly a fairy princess once and went into space as a kid, until the rocket imploded. Meanwhile, tie-in materials claim that she's always been where she is now, and the skool was built around her. The 15th issue of the Invader Zim comic book has the Skoolchildren theorize more backstories for her, such as being a golem created centuries ago to enact revenge on behalf of her creator and being part of a race of bug people planning to invade Earth.
  • Noodle Incident: See Multiple-Choice Past. There were apparently supposed to be more of them, but they got cut for one reason or another.
  • Obviously Evil: She wears a black dress and has a very creepy demeanor.
  • Perpetual Frowner: She has only two expressions and moods to go with them: irritated and infuriated.
  • Sadist Teacher: She's a teacher and isn't very nice to her students.
  • Snake People: She's tall and thin and swirls through the air and curls around people like a boa constrictor. Rattlesnake sounds show up when she speaks or gets annoyed.
  • Straw Nihilist: Played for Laughs. She often gives lectures to her students on how there's no hope for anyone and that doom is the only thing to come in the end.
  • Transplant: She was Squee!'s teacher before becoming a character in this show.
  • Weakened by the Light: She has to wear heavy, hooded robes on the one occasion we see her leave the building.
  • Used to Be a Sweet Kid: Implied at times by her numerous backstories.
  • Was Once a Man: One of her backstories implies that she used to be human before she became whatever she is now.
  • You Do Not Want To Know: Her response when Dib asks her how the tradition started of giving out meat on Valentine's Day.

    Skool Children 
Voiced by: Phil Lamarr (The Letter M), Jim Wise (Willy), Paul Greenberg (Poonchy), Janice Kawaye (Sara), Antoinette Spolar (Aki, Gretchen, Jessica, Mary, Peyoopi, and Spoo), Rosearik Rikki Simons (Chunk and Pigboy), Mo Collins (Zita), Jason Marsden (Zootch and Torque Smacky), Jhonen Vasquez (Brian, Carl and Old Kid)

"We think Dib's even crazier than normal today! Can we use one of our Crazy Cards to send him to the Crazy House for Boys?"

The other kids in the Skool which Zim and Dib attend, which includes Miss Bitters' class. They mostly act like normal kids and have absolutely no idea that Zim's an alien.

  • Aerith and Bob: From Gretchen, Rob, and Carl, to Peyoopi, Keef, and Chunk.
  • All Love Is Unrequited: Gretchen seems to have a crush on Dib, though he's more interested in chasing after Zim. In "Tak, the Hideous New Girl", she gives him a plate full of heart-shaped meat, and is later seen crying when she sees him talking to Tak.
  • Alpha Bitch: Jessica appears to be one. She gossips about Zim snobbily in "Bestest Friend", and subsequently refers to a group of unpopular kids sitting together at a table as "rejects". She's also snobby in the comics.
  • Amusing Injuries:
    Zootch: Argh! My organs!
  • Anime Hair: Peyoopi
  • Butt-Monkey: Due to having Zim as a classmate, and Miss Bitters as a teacher.
  • Braces of Orthodontic Overkill: Gretchen has huge braces that visibly stick out from her mouth, so much so that she looks as though she has no lower jaw.
  • Demoted to Extra: In Enter The Florpus almost all of them aren't given speaking roles except for Poonchy during a gag in the earlier part of the movie, and none of them are referred to by name. The most they do is unwittingly help Zim's plan to transport Earth into the path of the Irken Armada along with every other child on the planet.
  • The Ditz: Willy doesn't even seem to be smart enough to speak.
  • Everyone Has Standards: While they won't hesitate to pick on students, they seem to mark the line at discrimination against people for how they look. Some of the children call Dib out for calling Zim an alien just for how he looks in "The Nightmare Begins" and Zita calls Dib out for hurting Pigboy's feelings in "The Frycook What Came from All That Space" when he says that they aren't pigs.
  • Evil Redhead: Chunk and Rob both have red hair and aren't very nice.
  • Irony: They call Dib crazy, but some of them act even weirder than they accuse him of being.
  • Jerk Jock: Downplayed by Torque Smacky, who is a burly kid that is always shown doing curls with a weight. While he's hardly a Lovable Jock, and shoves Zim to the ground just for looking at him funny, he tends to be fairly hands off compared to the other kids in terms of bullying and is the only one among them shown to actually be capable of having a civil (albeit one-sided) conversation with Dib.
  • Jerkass Has a Point: While they're all generally shown to be mean-spirited little assholes no matter the context, their ostracization of Dib isn't without some legitimate ground. From what we see of his social interactions, Dib often aggressively forces his obsession with the paranormal onto others and ignores or dismisses their own interests as being unimportant. Flashbacks to his early childhood in "Bad, Bad Rubber Piggy" show him ruining another kid's birthday party because he mistook an alien-shaped punching bag for the real thing and harassing a child who may or may not have been a bigfoot simply for looking like a monster, despite him seemingly having been just minding his own business.
  • Karma Houdini: Usually get away with how they treat Dib and sometimes Zim, totally scott-free.
  • Karma Houdini Warranty: That said, some episodes have them hurt or traumatized by Zim's plans which they ignore Dib's warnings of.
  • Kids Are Cruel: Dib's class makes no effort to hide how much they hate him. The only ones to be exempt from this are Gretchen, Keef and a handful of recurring kids who don't pick on Dib. Even Gretchen is seen laughing at Dib in "Room With a Moose" and "Frycook What Come From All That Space."
  • Nice Hat: Carl, who wears a red stocking cap.
  • No Indoor Voice: Screamy, who appears in the unfinished episode "Ten Minutes to Doom."
  • No Name Given: The One-Scene Wonder student president in "The Voting of the Doomed."
  • The Pig-Pen: Willy is disgustingly filthy.
  • Recurring Extra: They're essentially minor characters who frequently appear in scenes taking place at Skool.
  • The Stoic: Torque Smacky seems indifferent to anything that doesn't involve sports or excercising, and even those don't elicit much of a reaction from him.
  • Teacher's Pet: Zita is the only student who Miss Bitters seems to like.
  • Took a Level in Jerkass: In the earlier episodes, while they never liked Dib or Zim, they hardly did anything worse than make minor insults to them or talk badly about them behind their backs. Later episodes have several of them cruelly mocking and physically humiliating them, to the point where Zim attempts to trap them in an alternate dimension and Dib questions if they're even worth saving in A Room with a Moose. Everyone outright refuses to sit on the side of the bus as him, because it could damage some unexplained credibility they have.
    Rob: If we go over [to the other side of the bus], then we'd be near you.
    Jessica: That doesn't sound cool.
    Morla: Do you see our dilemma?
  • Vocal Dissonance: In "Tak, the Hideous New Girl", a female student yells "WIENERS ROCK!" in an adult man's voice.
  • Weirdness Censor: Up to Eleven. No matter how obvious it is that Zim is an alien, they are too dumb or oblivious to see it. "The Frycook What Came From All That Space" has Sizz-Lorr kidnap Zim in front of the whole class and they act like nothing happened.
  • You Gotta Have Blue Hair: Zita and Gretchen have purple hair, Peyoopi has green hair, and Sara has blue hair.
  • Younger Than They Look: Old Kid, as his name implies, is a child that somehow looks like an elderly man.

Voiced by: Danny Cooksey
An overly optimistic schoolboy with an abnormal resistance to injury, Keef is the first (and likely only) human Zim attempts to make friends with.
  • Ambiguously Human: Not only incredibly durable, absorbent, and unnaturally optimistic, but he also has only three fingers, the same as Irkens.
  • Birds of a Feather: The unproduced "Return of Keef" reveals that he and GIR naturally get along perfectly.
  • Cheerful Child: Nothing that hasn't been stated before.
  • Determinator: Keef never seems to lose his cheery demeanor and hopeless optimism, brushing off the most gruesome injuries with a cheeky smile.
  • Dumbass Has a Point: In the unreleased episode "Return of Keef", he redecorates Dib's room and gets rid of his paranormal stuff, because it was "making him sad." Considering how ninety percent of Dib's suffering comes from his obsession with hunting monsters, it's hard to argue with that.
  • Eye Scream: Zim's "friendship" present. Don't worry, he was fine by the next episode.
  • Fiery Redhead: To the point where he literally explodes from enthusiasm at one point.
  • Genre Blind: Considering the Crapsack World he lives in, you probably wouldn't be so perpetually cheerful if you were in his place.
  • Hidden Depths: In his proper debut, he paints a recreation of Madonna and Child by Giovanni Bellini (with him and Zim substituting), suggesting he's quite a skilled artist for his age. And in Issue 15 of the comics, he shows himself to be a very creative storyteller.
  • Keet: A very cheery and energetic boy. His name even sounds like the word!
  • Kiddie Kid: Wears a shirt with rainbows on it, uses words like "bestest" and prefers skipping over walking. While all of the Skool children are idiots, Keef is one in a very distinctly childish way.
  • Made of Iron: He's inexplicably highly resistant to pain. In fact, the main reason Zim chose him to be his best friend is because he endured the greatest amount of physical torture out of the candidates for the position.
  • Nice Guy: Probably the nicest kid in Skool. Unfortunately, since he's in a Sadist Show, it does not end well for him.
  • The Pollyanna: Keef is always friendly and cheerful, despite the Crapsack World he lives in.
  • Stepford Smiler: Implied a few times. Before he meets Zim at the Rejects' lunch table, he looks unusually downtrodden like the rest of his friends. Later, he frowns briefly when his invitations to Zim's "Party" are rejected.
  • The Thing That Would Not Leave: Zim has to rip out his eyes to get him to leave him alone once they become friends. Even then, the only reason that he does is because his robotic replacements trick him into thinking that a squirrel is Zim.


A schoolgirl who temporarily teams up with Dib in issue 8 of the comics to investigate the infestation of alien pants Zim has brought to earth.

  • Action Girl: Only a year higher than Dib, and yet a hardened fighter against a pants invasion.
  • Ambiguously Gay: Despite calling Sheather her "best friend", the way she's openly emotional about reuniting,coupled with the fact that Sheather wears a single earring, suggests there's something closer going on between them.
    • Eventually confirmed as such by Eric Trueheart.
  • Badass Normal: She's a human skool-kid whose able to hold her own against alien parasites and is the only one sans Dib to escape infestation.
  • Butch Lesbian: Implied to be this, and displays quite a few mannerisms.
  • Determinator: She survived the pants invasion long enough to reunite and embrace her friend after the Ubertrouser was destroyed.
  • Earn Your Happy Ending: In an unusual turn for this universe, Groyna actually reunites with Sheather after the pants invasion is over, and the two are last seen embracing with tears of joy.
  • Emotional Bruiser: Groyna is clearly weeping as she fights her pants controlled friend.
  • God-Created Canon Foreigner: Groyna was supposed to appear in the cancelled episode "Pants!". When the show was eventually given a comic continuation, she made her proper debut.
  • Hero of Another Story: Groyna is the last survivor of Zim's alien pants invasion plan. She's wise to the pants' habits of finding prey and has even killed a few over the last several days. Of course, since this is following Dib, we don't actually get much of her side of the story.
  • Huge School Girl: Groyna is built like a bodybuilder and unusually athletic for a kid from this universe.
  • The Lad-ette: She states she's a year ahead of Dib and captain of the School Vooleyball team.
  • One-Shot Character: Thus far, she's only ever appeared in one issue, although Eric Trueheart has expressed interest in her returning.
  • Only Sane Man: In contrast to the usually brainless masses who line up for whatever insidious fad Zim's promoting, Groyna resists all the way and even calls the alien pants for what they are.
  • Tomboy with a Girly Streak: She is a female jock with a Brawn Hilda-ish appearance and an openly emotional personality, as seen by how she cries under stress and lovingly embraces her best friend once the two of them are reunited.

Aliens, Monsters and Weirdos

    The Resisty
Voiced by: Fred Tatasciore (Lard Nar), Paul Greenberg (Shloonktapooxis), Rodger Bumpass (Spleenk)

"You haven't seen the last...of the RESISTY! (That's right, that's still our name!)"

Latecomers to the series, the Resisty are a Ragtag Bunch of Misfits from different planets who banded together to... well, resist the Evil Irken Empire. Led by Lard Nar, a former engineer from Planet Vort.

  • Aliens of London: Like Tak, Lard Nar has a British accent, for some reason.
  • All There in the Script: The character's names are only given in the end credits and the script.
  • Big Good: As an organized band trying to take down the Irken Empire, they want to be this, but, unfortunately for them, they're far too ineffectual and the Irkens are too powerful for the Resisty to actually get anywhere. The only reason they even had a shot was because of Zim hijacking control of the Massive, or they would have vaporized then and there. They would've reappeared to continue the fight had the series continued, but whether they would've gotten anywhere with their goals is anyone's guess.
  • Cast of Snowflakes: Every single one of them is a distinct-looking alien, making them a very diverse bunch.
  • Character Development: It's only in one episode, but you can still kinda see Lard Nar come into his own over the course of "Backseat Drivers" — from a guy who completely freaks out over the slightest setback, to a leader undaunted at even the loss of his entire ship.
  • Cloudcuckoolander: Shloonktapooxis. The best example of his looniness is when he suggests they call their group "the Pirate Monkeys", for no reason other than thinking the name is awesome.
  • Cool Chair: Lard Nar has a neat-looking chair he sits in.
  • Cool Ship: They have an awesome ship. Too bad they had to shrinky self-destruct it.
  • Cowardly Lion: The idea of launching an attack on the Massive directly causes Lard Nar to have an instant Freak Out, but he still goes through with organizing one for the sake of hurting the Irkens and strengthening the resistance.
  • David vs. Goliath: They're a scrappy resistance movement that is just starting to bud attempting to take down the most powerful race in the universe. It would be an understatement to say that their chances of succeeding are slim.
  • Determined Defeatist: Lard Nar freaks out at the drop of a hat and seems to have almost no faith in the Resisty's chances of actually stopping the Irken Empire (despite being its leader), but continues to lead it nonetheless.
  • Didn't Think This Through: The Resisty didn't realize just how out of their depth they were until they came face to face with the Massive. Zim hijacking the Massive's power core was the only thing that kept them from being blown to smithereens.
    Lard Nar: My people designed most of that thing, so I know how powerful it is. (*Beat*) WE'RE GONNA DIE! WHOSE IDEA WAS THIS?!
  • The Ditz: Both Shloonktapooxis and Spleenk seem to be idiots. To be more specific, Spleenk seems to be an idiot, while Shloonktapooxis seems to be straight up insane.
  • Fake Ultimate Hero: Lard Nar tries to project the image of a cool and charismatic leader onto himself, but is both too much of a coward and too aware of how in over his head he is to ever pull it off for very long.
  • From Bad to Worse: Things go downhill for them when their power core is teleported out of the ship and swapped with the Massive's faulty one. There was good news... until they realized they were about to crash into Earth, meaning they had to abandon ship.
  • Hero of Another Story: They're a resistance force trying to stop the Irken Empire's galactic conquest, though their storyline isn't explored nor expanded due to the show's untimely cancellation.
  • Horrible Judge of Character: Lard Nar continues to take Spleenk's advice even after he proves himself over and over again to be a moron. It reaches a point where even Spleenk himself has no clue why Lard Nar listens to him at all.
  • In the Hood: Ixane wears a face-obscuring cloak.
  • La Résistance: Their goal is to fight back against the Irken invaders.
  • Large Ham: Whether he's giving a Rousing Speech or having a screaming Freak Out, Lard Nar is very melodramatic.
  • Mood-Swinger: Lard Nar, at least to start with.
  • Multiple Head Case: One of them, although he isn't given a name.
  • Nervous Wreck: While Lard Nar attempts to seem like a dignified Rebel Leader, it takes very little to send him into a screaming panic attack. Justified, as his background as a former weapon developer for the Irken Empire has made him all too aware of how horribly outmatched he and his followers are.
  • No Name Given: All of them are nameless except for Lard Nar, Shloonktapooxis, Spleenk, and Ixane, and even they only get them in the scripts.
  • One Shot Characters: They were meant to be more, but the show was cancelled before their plotline could get past its introduction. Lard Nar does show up in a non-speaking role in the unproduced script for "The Trial."
  • Screams Like a Little Girl: Again, Lard Nar. Though he quickly clears his throat and tries to look like a badass again.
  • Surrounded by Idiots: Lard Nar seems to be relatively smart, but his two most vocal assistants are bumbling idiots, and the rest of the group don't speak up enough to make it clear whether they're any better.
  • Two Girls to a Team: Ixane and an unnamed blobbish creature are the only two who seem to be female, and both are Out of Focus.
  • The Voiceless: Only Lard Nar, Shloonktapooxis and Spleenk speak during their sole appearance, making the entire rest of the Resisty qualify as this. Ixane in particular counts, however, as she is the only one besides the main three to be named in the script despite not saying a word.
  • The Woman Wearing the Queenly Mask: Parodied with Lard Nar. He's aware of the futility of the Resisty's mission and terrified for his life, but puts on a mask of being a calm and calculated leader for the sake of maintaining his comrades' morale. The only problem is that he's very, very bad at doing this, and cracks under the absolute slightest pressure.

    The Planet-Jackers 
Voiced by:Sherman Howard(Oog-Ah) Rob Izenberg(Nik)

"That one's gonna burn real good. Critters Burn good!"
A species of advanced aliens on a planet orbiting a dying sun. To keep their planet safe, they hijack worlds with a massive towing ship and launch them into said sun. Two try to steal Earth, much to Zim's chagrin.
  • Aerith and Bob: The pair's names, Oog-Ah and Nik.
  • Affably Evil: Nik at least is friendly with his more surly fellow planet jacker and initially tries to reason with Zim when he comes to stop them.
  • All There in the Manual: The nick E-cards reveal a lot more background on the two, as well as their names.
  • Big Guy, Little Guy: Nik is scrawny and less aggressive, while Oog-Ah is hulking and more inclined to a fight.
  • David Versus Goliath: Because Oog-Ah is much bigger and stronger, Zim's strategy is letting himself take a beating while GIR cuts loose the earth from it's prison. Given Zim's remarkable durability, it actually works.
  • Fair-Play Villain: After he's done beating the Irken to a pulp, Oog-Ah lets Zim retreat. Even if he's willing to destroy entire worlds, he evidently doesn't like killing unnecessarily.
  • Failed a Spot Check: A pretty big one too. Zim cuts loose Earth from their shieldings, but they go on anyway, completely failing to notice the planet is gone.
  • Genius Bruiser: May be a whole race of them. They've developed technology strong enough to tow whole planets and going by Oog-Ah, are very tough and brutal fighters.
  • Hidden Depths: According to the E-cards, Oog-Ah has a secret love of Ballet and wanted to be an architect before he was drafted into planet-jacking service.
  • Mighty Glacier: Oog-Ah moves very slow but hits Zim very hard. Justified as they're fighting in the vacumn of space.
  • Punch-Clock Villain: They steal planets to save their own world, not out of power-hungry malice like the Irkens. Oog-Ah even seems annoyed at having to fight Zim.
  • Solar CPR/Hurl It into the Sun: Their sun is dying out. Their solution? Steal entire planets from other galaxies and drop them into it as "kindling". Whether this process works or not is anyone's guess, but the ones we see aren't making the rules — their planet's government is.
  • Tranquil Fury: Oog-Ah is the more surly and angry of the two, but he's much more composed than our favorite Irken and barely shows fury as he's laying a beatdown.
  • Vitriolic Best Buds: Oog-Ah threatens to eat off Nik's head, but also shares some laughs with him.

    The Nhar-Gh'ok
Voiced by: Phil Lamarr (Shnooky)

"We will take your ship! And for the trouble you've caused, we're going to destroy your base, leaving you stranded here. Just like we were."

A race of aliens led by Gorkspace Sergeant Shnooky who were stranded on Earth posing as human babies after an incident in a maternity ward. They attempt to take Zim's ship and use it to fly back to their home planet. It doesn't end well for them.

  • Aliens Speaking English: As is standard for aliens in the Invader Zim universe, they're extraterrestrials that already know and speak the English language.
  • Disproportionate Retribution: Zim refuses to let them take his ship. They threaten to take his ship, destroy his base, report him to the human authorities, and leave him stranded on Earth.
  • Fate Worse than Death: At the end of Plague of Babies, Zim uses the power amplifier to reduce their intelligence to that of real babies.
  • Fusion Dance: In their final confrontation with Zim, they all merge together into a giant monster.
    Shnooky: Now, my minions! FORM GIGANTO-BABY!
  • Human Outside, Alien Inside: They look like human babies on the outside, but their sharp teeth, protruding tongues, and ability to spit an acid-like substance suggest that their resemblance to human infants is only superficial.
  • No Name Given: Like the Resisty, most of them are not given individual names.
  • Poisonous Person: One of them spits out an acid-like substance to melt through the wall of Zim's base.
  • Vocal Dissonance: Shnooky talks with a very deep voice.

    Ultra Peepi

Once an ordinary, adorable hamster Miss Bitters brought in to increase class enthusiasm, Peepi is soon transformed into a seemingly unstoppable creature of destruction by...well, guess who.

  • Attack of the 50-Foot Whatever: Fairly standard example, he's a giant, all consuming beast that's normally looked upon as something small and fragile.
  • Badass Adorable: A cute fluffy hamster that just happens to be 150 ft tall and with an array of evolving, deadly powers.
  • Big Eater: Literally, he even increases in size the more matter he consumes.
  • Cuteness Proximity: Zim planned to weaponize him for this very purpose, as anyone who looks at him quickly gets distracted by his cute mannerisms and fluffy appearance.
  • Fluffy the Terrible: Peepi, the cute hamster who will stomp you into nothing without a care.
  • Kaiju: A clear tribute to giant monster movies from Japan.
  • Killer Rabbit: Even as a Kaiju he still retains his innocent appearance and behavior, which just distracts none-so wise citizens before he squashes them.
  • Make My Monster Grow: It started when Zim mutated Peepi, then continues as he evolves from the matter he eats.
  • Non-Malicious Monster: He's basically just a curious, playful animal that got transformed into a monster and doesn't understand how much damage he's doing to the world around him.
  • Person of Mass Destruction: He lay wastes to an entire city, as well as the military that attacks him. It gets so extreme even Zim has to reel him back.
  • Rodents of Unusual Size: Again, giant hamster.
  • Touched by Vorlons: A particularly extreme example of how Irken technology can affect Earth lifeforms.
  • Uncertain Doom: Zim sends him rocketing into space, then crashing to Earth. While a title card of him appears assuring the audience No Animals Were Harmed, it's not revealed if he survived.

    Countess Von Verminstrasser 
Voiced by:Mindy Sterling

"You dare question me?! Question my methods!? You who stand to benefit the most from my research? You disgust me!"

The extremely paranoid, short tempered, and militant head of the "Delousers" an organization devoted to stopping rapid lice infections. Dib initially thinks she's nuts, but there's more to the issue than meets the eye.

  • Badass Labcoat: Comes with the occupation.
  • Foil: An older and angrier female counterpart for Dib. She could be considered one for Tak as well, since both are much more competent and ruthless than their male foils and actually come damn close to a full victory.
  • Good Is Not Nice: Wants to stop lice for the good of mankind, but she's not a pleasant person.
  • Hair-Trigger Temper: Very quick to snap and argue with anyone who criticizes her work.
  • Hero of Another Story: Well, "hero" would be a huge stretch, but it's implied hunting giant insect infestations is the norm for her and she still has a semi-heroic endgame.
  • I Did What I Had to Do: As she justifies her extreme methods:
    "Some will suffer yes, but for the greater good!"
  • Jerk with a Heart of Gold: A much more subtle example. She's extremely egotistical and her methods are ridiculously cruel, but she's still desperate to keep the public safe from the threat of the "Queen Lice" and is quick to congratulate and credit Zim for his (incredibly unwilling) role in stopping it.
  • Kick the Son of a Bitch: Using Zim as lice repellent, all while completely unaware of what he is.
  • Knight Templar: Goes to frightening extremes to contain lice and has no regard whatsoever for how the students feel.
  • Mama Bear: Ironically has this attitude toward Zim during the final showdown as she's flaying him alive.
    "Hold on, baby!"
  • Narcissist: Like Dib, Verminstrasser really wants to be validated by her peers as a hero, but she's a far, far more dangerous case of this. It doesn't help as much by the fact that her beliefs turn out to be right.
  • Never Mess with Granny: She's an elderly woman who is still very physically capable and dangerous.
  • Properly Paranoid: As it turns out, all her years of ranting about a giant Queen Lice were correct.

Voiced by: Rodger Bumpass (Nightmare Bitters and Nightmare Membrane), Melissa Fahn (Nightmare Gaz), Jhonen Vasquez (Yolk), Kevin Michael Richardson (Hummelflesh), Rosearik Rikki Simons (The Enigma)

Because Dib's life isn't screwed up enough, his subconscious is a gateway to a dark netherworld, whose inhabitants are grotesquely twisted versions of almost everyone he knows.

  • Always Chaotic Evil: They make the Irkens look reasonable.
  • Authority Equals Asskicking: Nightmare Bitters is their leader, and rips apart Zim's mech very easily.
  • Alas, Poor Villain: The ones who end up banished by Nightmare Bitters, considering how their comrades are visibly saddened to see them leave.
  • Bad Boss: Nightmare Bitters has a bad habit of banishing her underlings to the "Realm of Eternal Screaming and Restlessness" even for things that aren't their fault.
  • Body Horror: As you'd expect, they're all grotesquely twisted in appearance, with each creature being different.
  • Dark World: And yet, it's all found in Dib's large head.
  • Horrifying the Horror: After Nightmare Bitters finally manages to escape into the real world, she is so disgusted by the children and terrified by a morbidly obease and chocolate covered GIR that she flees screaming.
  • Knight of Cerebus: Amusingly inverted. While Nightmare Bitters, the leader of a race of war-mongering extra-dimensional monsters, should be this, she's actually somewhat childlike and fun-loving, especially compared to her main show counterpart.
  • Monster Lord: Again, Nightmare Bitters.
  • Our Monsters Are Weird: A lot of them are pretty bizarre-looking. The best example is The Enigma, who for some reason has a steering wheel on his stomach.
  • Punch-Clock Villain: Their attitudes when not terrorizing or being "spooky" isn't much different from everyday folk.

    "Mary" and "Fred" 
Voiced by: Eric Trueheart and Paul Greenbergnote 

A pair of aliens who once captured Zim under the mistaken belief that he was a bona fide human being. Zim ends up escaping them easily because they're both really dumb.

  • Aliens of London: "Fred" (the blue-eyed one) has a Cockney British accent.
  • Bizarre Alien Biology: Laughing apparently causes green goo to squirt out of their ears.
  • The Ditz: Both aliens are clearly stupid as mud because of their very poor understanding of Earth life forms and barely doing anything about Zim and GIR escaping. Heck, they still believe Zim to be a human and GIR to be a dog after they remove their disguises in front of them!
  • Paper-Thin Disguise: Somehow, their human disguises are even worse than Zim's. All they wear are smocks with human bodies printed on them and crude-looking masks. To make their disguises even more ridiculous, the one disguised as a male human has the nametag reading "Mary", while the one in the female disguise has the nametage reading "Fred".
  • Transplant: They originated as minor characters in Squee!.

    Mortos der Soulstealer 
Voiced by: Wally Wingert

A being from the netherworld who appears every 1,000 years. Before returning home, he has to grant one mortal a wish.

  • Anti-Antichrist: An undead being with ungodly supernatural powers who rises from the netherworld every one thousand years to... just dick around.
  • Berserk Button: He gets really angry when Dib calls him a mooch.
  • Big Eater: He has a voracious appetite. One of the first things he does after Dib asks that he steal Zim's soul is order a fuckton of McMeaties food.
  • Hulk Speak: He refers to himself in third person and a lot of his sentences are incomplete.

Voiced by: Jhonen Vasquez

Debuting in Enter the Florpus, Clembrane is a failed clone of Professor Membrane created by Zim in the past as part of an aborted plan to swap him out with the real Membrane and have him ground Dib forever. Zim gave up on him, not because the clone obviously looks, sounds and acts absolutely nothing like the real Professor Membrane, but because the clone couldn't make pudding just the way Dib likes... even though Dib doesn't even like pudding. Nevertheless, Zim does find a use for Clembrane in his plots eventually.

  • Anti-Villain: He does Zim's bidding but not out of malice. He really is convinced that he's the real Professor Membrane and that Dib and Gaz are his beloved children. Him essentially keeping them under house arrest is mostly so he can spend time with them.
  • Berserk Button: More out of distraught than outright anger, but Dib insisting that he's not his dad will cause him to scream at the top of his lungs and thrash around.
  • Chekhov's Gunman: Introduced as a minor gag early into the movie, but becomes a major presence in it later on.
  • Clone Degeneration: A deformed clone of Membrane who is clearly... out there.
  • Cloning Blues: Averted. Though he's a clone, he's convinced that he's the real Professor Membrane and is completely content with his lot in life. He even seemingly joins the Membrane household at the end of Enter the Florpus, either still oblivious to the fact that he's a clone or content with the "imposter" Professor Membrane living with him and "his" kids.
  • Crouching Moron, Hidden Badass: See Implacable Man. Plus, during the climax, he's actually able to knock out Membrane, who up until that moment had been a One-Man Army and his Heel–Face Turn is what marks Zim's defeat.
  • Easy Impersonation: Even though Zim designed him to be a clone of Professor Membrane, Clembrane just looks like some kind of fish monster just wearing his clothes. Absolutely nobody mistakes the two of them, with only Zim, being Zim, believing the two look like a perfect match. Dib and Gaz only go along with the ruse because Clembrane throws destructive temper tantrums when they say he's not their dad.
  • Gone Horribly Right: Zim wanted a clone of Professor Membrane that he could use against Dib. He failed in matching the clone to the real Membrane in almost every capacity except for one. Clembrane shares Membrane's love for "his" children.
  • Heel–Face Turn: Though he only barely qualifies as a villain, he still turns on Zim at the end of Enter the Florpus and hands Minimoose over to Professor Membrane so he can use it to save the Earth from the Florpus.
  • Implacable Man: Despite looking like some deformed fishman, his bizarre thought processes, and obsession with pudding, Clembrane is scarily competent at preventing Dib and Gaz from escaping the Membrane household. Gaz tells Dib she tried every way possible to get out only for him to stop her at every turn, and given what Gaz has shown herself to be capable of, it's surprisingly impressive.
  • Lethal Chef: Clembrane is obsessed with serving Dib and Gaz pudding at every opportunity, but apparently Zim wasn't understating it when he said the clone was incapable of making pudding just the way Dib liked (even though Dib doesn't even like pudding). According to Gaz, it's the worst tasting pudding in the world. Though, as part of convincing Clembrane to side with her family, she lies and tells him it's the finest pudding she's ever tasted.
  • Monster Roommate: At the end of Enter the Florpus, Dib questions if Clembrane just lives with the Membrane family now. Apparently the answer is "yes", even if the real Professor Membrane remains confused about the situation.
  • My Beloved Smother: A male version. He's convinced he's the real Professor Membrane and that Dib and Gaz are his actual children and acts very overbearing towards them, smothering them and forcing them to spend time with him.
  • Non-Mammalian Hair: He has a hairstyle that mimics Professor Membrane's, despite looking like some sort of fish monster.
  • Portmanteau: Gaz dubs him Clembrane as a shortening of "Clone Membrane."
  • Turned Against Their Masters: Though in this case, since his master is Zim and turning against him saves the Earth, it all works out pretty well.
  • Trademark Favorite Food: Pudding! Granted, he doesn't seem to like eating it so much as he likes making sure Dib and Gaz eat it at every meal.

    Recap Kid
An energetic child that claims to know all things Invader Zim. They appear at the start of every issue of the comics to give the readers a recap of previous events.

    Agent Batflaps 
A minor recurring character from the comics. A forum poster on Truthshrieker, and something of a rival to Dib in the field of Paranormal investigation. Not in terms of competence, but in his ability to garner respect and clout from the community.
  • Asshole Victim: Dib (disguised as an alien lackey) convinces Zim to select him for abduction and gross experiments, which he kind of deserves for how mean he was to Dib. He later manages to escape off-screen and continues to heckle Dib online. And in his second appearance, Gaz ultimately beats him up in order to force him to leave Dib's newest video a positive review.
  • Caustic Critic: He compulsively attacks any videos and images Dib posts.
  • Noodle Incident: How he managed to escape Zim's base. In his second appearance, he claims it somehow involved starving to death.
  • Stylistic Suck: His videos showing "proof" of the paranormal make no effort to hide the strings holding up the possessed objects and he is very prone to Bad "Bad Acting".

Real name Fitzoo-Menga, he's an Arc Villain from the comics, who remotely torments Zim for several issues as part of a larger, mysterious agenda.
  • And I Must Scream: Is last seen with his mind stuck in a PAK attached to a couch on a seemingly abandoned planet.
  • Arc Villain: For Issues 22-25, which are called the "Arc of Virooz".
  • Cyborg: Not that he needs to be one. Apparently he added cybernetic parts to himself just because he could afford to.
  • Fiction 500: Is apparently a "quadrillonaire".
  • Grand Theft Me: His ultimate goal is to steal Zim's body and identity.
  • Hidden Agenda Villain: He's around for four issues, and his goals aren't revealed until the last one.
  • Hoist by His Own Petard: The PAK he transferred his mind into in order to steal Zim's body ends up stuck on a couch, trapping him forever.
  • The Man Behind the Man: Zim initially thinks that "Virooz" is the name of the virus that infected GIR and made him turn on Zim. It's only after it's defeated does Zim realize the virus was working for someone.
  • Two Aliases, One Character: His real name is Fitzoo-Menga, but he prefers to go by Virooz.

    Number 1 / Zib
Click here to see his true form 
Of the thousands of alternate Zims who ended up trapped in the Zimvoid after passing through Pandora's Quadrangle, this one is considered the best of the best, the ultimate Zim who conquered his Earth and destroyed his enemies. He effectively runs the Pocket Dimension and its contests in order to determine the best of the best.

Turns out he's actually a Dib who killed his Zim and fused his brain with Zim's PAK after modifying it. He apparently created the Zimvoid in order to trick other Zims into uploading his own PAK virus to their respective Irken Armadas so he can destroy them.

  • The Ace: Like that name implies, he's apparently the best version of Zim. Even the resistance is impressed with his achievements.
  • And I Must Scream: After Zim tampers with the timelines to erase his own alternates, Zib's plan is rapildy undone, ejecting everything back their their home timelines and leaving Zib trapped alone in his own dead universe.
  • Arc Villain: For the Battle Void Arc from issues 46-49.
  • Apocalypse How: He caused a Class X-4. The Pandora's Quadrangle wormholes and the the small planetoid where he makes his base are all that remains of his universe.
  • Badass Boast: When all of the Zims gang up on him, he retorts with this.
    Number 1: I've defeated one Zim already. I've conquered an entire armada! Frying all these Zims will be less than a challenge. It'll be a genuine pleasure!
  • Berserk Button: He really hates being called "Zib".
  • Composite Character: Essentially the worst parts of Zim and Dib merged into one, being an alternate universe Dib who killed his world's Zim and took his PAK.
  • Exact Words: He is described as the ultimate Zim who conquered his Earth and killed his enemies. This is technically true, as he is a Zim-Dib hybrid who, as Dib, killed his timeline's Zim, and took over the Earth in a twisted attempt to save it.
  • Evil All Along: He manages to play this trope straight for both sides. For Zim he's actually his universe's Dib, who was using the alias of Zim Number 1 to lure Zims to be beaten, brainwashed, and used as carriers to infect their home universes' Irken Empires. And for Dib, turns out being merged with Zim's PAK, along with the endless bullying he experienced his entire life has left Zib completely unhinged. He ended up destroying his entire universe besides the small space his base occupies, and was gleefully willing to subject other timelines to the same fate to prove he was right.
  • Half-Human Hybrid: After attaching a modified version of Zim's PAK to his brain, Zib became an amalgamation of Zim and Dib, both in personality and in physical characteristics such as his smile, bulging eyes that resemble Zim's human disguise lenses, more pointed fingers, and two hair spikes instead of, which resemble Zim's antennae.
  • Hannibal Lecture: Tries giving one to Dib. As he puts it, yes he succeeded in stopping the threat of Zim for good, but what happened after? No one cared. Presumably even after all the evidence he provided, it was disregarded. This is what led Zib to go and take over the Earth to get the resources to build his weapon.
  • Hidden Agenda Villain: His identity (beyond being one of the thousands of Zims trapped in the Zimvoid) was unknown until the third issue of his arc, and his true motives aren't revealed until near the end of the storyline.
  • Meaningful Name: Of the unintentional and Accidental Innuendo variety. In a similar case to Dib Zib is also a word with connections to the Arabic language as a slang word for dick. Given that Zib is basically a combination of Zim and Dib, two jerks in their own rights, without any of their redeeming qualities and goes onto committing multi-dimensional genocide let's just say that the shoe fits.
  • A Million Is a Statistic: He views eradicating all life from his timeline as "a minor setback" and brushes off Dib's fears about him doing this to his timeline by saying that a few doomed timelines don't matter to him when he has infinite timelines to give him infinite do overs to try to save the universe.
  • Mirror Character: The similarities mentioned in Dib's own folder are magnified with this version of Dib. And they got even worse after he put on Zim's PAK.
  • Mythology Gag: A similar concept where Dib attaches Zim's PAK to himself and becomes more aggressive, insane, and megalomaniacal as a result of its influence was originally proposed for the unfinished episode of the show, "Ten Minutes to Doom".
  • Ungrateful Bastard: Not with him, but how he perceives his world's people. As he says, even after defeating Zim, no body cared or did anything in response. This caused him to finally break, merge himself with Zim's PAK and try to take over the world. He even accuses Dib of this when Dib calls him out on his horrific actions that destroyed his world.
  • Walking Spoiler: Have you noticed all the spoiler tags yet?

Alternative Title(s): Invader Zim Enter The Florpus


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