Invader Zim/YMMV

"Zim: "I don't remember programming that...""
 * Accidental Innuendo: "The Dib! The Dib! I don't care how delicious he is, he's evil!"
 * Alternative Character Interpretation: Zim, Dib, Gaz, Prof. Membrane and almost every Jhonen Vasquez character. They have too much psychological complexity.
 * Big Lipped Alligator Moment: In "The Girl Who Cried Gnome" there was an incident where Zim let loose a "Robot Gopher" to get rid of a girl scout that had wandered up to his front door selling cookies. After burrowing underground and trapping the girl's foot in a hole the Gopher proceeds to dance with her and then flew away into a swirling vortex leading to another dimension.

"GIR (to Dib): Listen to me, he [Zim needs you Mary! You two such good friends! Like hot dogs! Please hunt my master again! COUCH!!]"
 * In "Gaz, Taster of Pork," Dib goes to MacMeaties and talks with a hobo. But wait for it... he spontaneously kidnaps a poor guy eating there. We never see the hobo again.
 * And then there's that Ham Demon in the Tak episode. Shows up for one scene, fights Zim, never mentioned again.
 * Crazy Awesome: Professor Membrane, so very much. He has a switch that restores power to the entire earth, flies and shoots energy blasts when excited, builds and refuses to use a perpetual energy device on a whim, etc.
 * Dib and Zim piloting Mercury and Mars, respectively, as ships in a space battle for the continued existence of mankind.
 * GIR is made of Crazy Awesome.
 * Cult Classic: It's been cancelled 10 years and still gets decent money from merchandise. Not to mention the huge, still-alive fanbase.
 * Just to drive the point home: to commemorate the 10th anniversary of the show's debut, fans recently held the first "Invader Con", which is exactly what it sounds like - an entire convention dedicated to the show featuring several of the voice actors as guests.
 * Draco in Leather Pants: Zim does get a lot of this. See Misaimed Fandom, below.
 * Ear Worm: The Doom Song.
 * Not to mention, "Bow down, bow down, before the power of Santa, or be crushed, be crushed, BYYYYYYYYYYY his jolly boots of doom..."
 * And the theme song! Doo-doo-doo-doo-doo, doo-doo-doo-doo-doo, doo-doo-doo-doo-doo-doo-doo-doo...
 * The credits theme seems to get stuck in my head as well.
 * "BLOATY'S PIZZA HOG, BLOATY'S PIZZA HOG..."
 * Ensemble Darkhorse: Tak's only in one episode (and an unrecovered script), but in fanfic she often gets billing as a main character. She is the only significant female Irken. Counselor Dwicky from "Vindicated" is similarly popular.
 * GIR is popular to an absolutely absurd degree. To go by merchandising, not only is he the most popular character in the show, his popularity might actually exceed the show's, as people have been known to buy GIR memorabilia despite having never seen Invader Zim. As the creators themselves have gone on record saying, "America loves GIR!"
 * Keef and Gretchen also have become rather popular. Albeit not the level of Tak and Dwicky.
 * Evil Is Sexy: Zim, Tak, and most of the Irken species.
 * In Fan Art At least...
 * Fan Dumb: Let's just say... yes, there is Fan Dumb.
 * Fanon Discontinuity: "Gaz: Taster of Pork" gets this treatment quite a bit, due to the Idiot Plot and both Dib and Gaz acting out of character.
 * Foe Yay: Mostly Fanon "ZADR".
 * "Mopiness of Doom", though never animated, was full of this.

"Dib: You're just jealous...
 * Sort of gets a look in the series with Dib's initial crush on Tak, a ruthless and competent female Irken who shares his hatred for Zim (if not exceeds it) but is planning to conquer/destroy Earth herself as part of her plan to discredit Zim. Of course, she only showed up in one episode and Dib seemed to lose any attraction to her after discovering she is also an alien invader.
 * It's never explicit that Dib likes Tak, though that's a popular fan interpretation; the two act friendly and he tells Zim he "likes" her, but he could easily have meant it platonically.
 * He gives her a valentine and Gretchen, who likes him, is clearly upset, so there's at least a slight aura of crush.
 * Also, according to some, the Tallests. Although nobody knows what exactly their relationship entails...
 * Fountain of Memes: The whole show, but just about every word that comes out of GIR's mouth is a meme.
 * Hilarious in Hindsight: In one episode, Zim catches Dib sneaking around his house in a squirrel disguise. After Dib runs off, Zim yells a parting insult to him, calling him "Squirrel boy!" Several years later, Zim's voice actor would go on to voice the titular character in the series Squirrel Boy.
 * This, when you consider the internet meme involving trollface an "u jelly?"

Zim: This has nothing to do with jelly!"

"A) They haven't watched it
 * Hype Backlash: As it is with everything popular, there will always be an internet cynic who thinks the show is overrated.
 * One criticism is that most fans of Zim seem to be hyperactive "I'm so random" 12-year olds who only like the show because of Gir. This certainly isn't true, as there are many other older, more mature fans out there who appreciate the show for its dark, twisted sense of humor.
 * Internet Backdraft: And how. Operation Head Pigeons was first started on Facebook, and still remains a group as Operation Head Pigeons 2.0. Nickelodeon says that they've never seen a fanbase as hardworking as them. They've most likely triggered a DVD release, and through whatever miracle, possibly could revive the show. (Though this idea seems to be on the backburner now.)
 * Jerkass Woobie: Zim, for some. Dib for some more, though he'd be easier to argue as a regular Woobie.
 * Gaz can count as this depending on your interpretation. See Alternative Character Interpretation.
 * Magnificent Bastard: Tak and occasionally, Zim.
 * Misaimed Fandom: Some of Zim's fans have the tendency to play him up as The Woobie while entirely glossing over the whole "Kill All Humans" thing. Rather than an unstable loose cannon who often fails due to a tendency to shoot himself in the foot, he's depicted as intentionally harmless. On occasion Mary Sue has been known to help Zim on his mission to conquer the Earth.
 * Many fans also think GIR is CUTE. The writers made the episode "GIR Goes Crazy and Stuff", which reveals GIR's evil side. In this episode, among other things, GIR tries to KILL ZIM. Jhonen Vasquez hoped that the episode would make people "uncomfortable" with the robot. It didn't work.
 * GIR might be messed up, but he still looks cute in the show. In Jhonen's recent art, on the other hand...
 * The larger Irken Empire often gets this treatment too, perhaps on the basis that Evil Is Cool.
 * Misaimed Marketing: See Misaimed Fandom. GIR's "cuteness" has been exploited in every conceivable way for merchandise. Most of the merchandise is of GIR. (Not to mention Jhonen gets no royalties for it anyways.) Lots of people were introduced to this show through Hot Topic, and if you ask them what they like about Invader Zim, they will tell you one of the following:

B) They like GIR!

C) Who is "Zim"?

D) All of the above"

"Dib: Wait, Zim! Promise me you're on our side this time.
 * Moral Event Horizon: Zim's attempted murder of Dib in "Bad, Bad Rubber Piggy" does it for some. It's not really the worst behavior he's ever demonstrated, but the rapt, gleefully anticipatory look on his face as he watches the life go out of Dib's eyes -- with accompanying flatline beep -- is creepy on a personal level that he doesn't often reach.
 * Others can say when in Hobo 13, Zim sacrificed everyone on his team to advance himself to the fortress of pain.
 * In "Game Slave 2", Gaz may have crossed this when she, for stealing her Game Slave 2. Mind, thanks to Executive Meddling he wound up surviving, and was almost an Asshole Victim in the first place, so perhaps this lessens it.
 * Or possibly in "Dibship Rising", when she used a device to try wiping out all mankind.
 * In the DVD commentary it's stated that "GIR Goes Crazy and Stuff" was deliberately intended to induce this and make people "uncomfortable" with GIR -- the common perception of the robot as good-natured and kind wasn't what Jhonen had hoped to portray.
 * Narm Charm: Since approximately 99% of the series is played for ridiculous, surreal laughs, when things do get serious it can get away with saying things that would seem totally ridiculous in any other show:

Zim: I know not of sides, Earth Stink, but just this once I agree with you. The hamster must be stopped."

"GIR: PUPPIES!!!
 * Nausea Fuel: "Career Day", "Rise of the Zit-Boy", "Dark Harvest", the turkey dude's lucky neck meats in "The Sad, Sad Tale of Chickenfoot"... speaking of which, the scene where a guy's eating soggy french fries out of a tub full of dirty dishwater grosses out Jhonen himself.
 * "Halloween Spectacular of Spooky Doom." Just... that. *shudder*
 * Neutral Selfish: Gaz.
 * Nightmare Fuel: An absurd amount of it.
 * Periphery Demographic: Teenagers and young adults love Zim, which was targeted at 8-to-11-year-olds (not that you could really tell from the content).
 * Ron the Death Eater: Dib gets this treatment in fanfic a lot -- having his nastier impulses cranked up to the point of being an outright Torture Technician, and being portrayed as a bully that "picks" on Zim (when the balance of power goes the other way entirely). It's a common assertion that he is xenophobic to the extreme and only hates Zim because he's an alien, and must be assumed to have no actual sympathy or compassion for his fellow human because he does hope for personal self-gain in opposing Zim, when most episodes make it clear he'd like to better humankind and himself.
 * Seasonal Rot: Some consider the later episodes ("Mortos Der Soul Stealer", "Zim Eats Waffles", "Gaz, Taster of Pork", etc.) to have suffered a significant drop in quality.
 * Of course, Mortos did have this memorable gem...

Zim: You can eat later, Gir."

""Speaking of Dib, I’m shocked at just how many girls like dressing up as Dib. Seriously, I saw a dozen female Dibs this weekend, and barely one male one. It seems like Dib has almost become some kind of butch-girl icon. I think that’s pretty cool. ""
 * Selfish Evil: Zim on occasion.
 * Selfish Good: Dib in the earlier episodes. All he seemed to care about was to capture Zim and prove that aliens are real, before caring about the world more.
 * Sending Stuff to Save The Show The fan group Operation Head Pigeon spammed the Nickelodeon executives using phone calls and message boards. The group has prompted a Zim marathon, putting it back on Nicktoons, and a best-of DVD entitled "Operation Doom". If the DVD sells well, they hope more seasons will be greenlighted.
 * Shipping:
 * Cargo Ship: Sort of an inversion. GIR seems to have a little crush on Gaz. It's rather subtle though. Evidence for this can be found in the episodes "Bloaty's Pizza Hog" and "Tak, the Hideous New Girl".
 * GIR x Piggy, now it gets weird.
 * Foe Yay Shipping: The most common (by far) pairing you will find is Zim/Dib. For many it's pure Squick, but it's undeniably popular.
 * Idiosyncratic Ship Naming: Takes the form "_A_R" (for "X and Y romance"), with the blanks filled in by the first letters of the characters' names (e.g. ZADR from "Zim and Dib romance"). Made somewhat problematic by the fact that several characters' names start with the same letter.
 * No Yay: Those who don't care for Zim/Dib tend to slot it here. Let's leave it at that.
 * Robo Ship: GIR/Mimi, Tak's SIR unit.
 * Toy Ship: Dib/Gretchen -- based on her evident crush on him in "Tak, the Hideous New Girl." There's not a lot of fic for it, but there is some.
 * Squick: Up to Eleven. Spurting pus, dripping grease, and squishy organs. And one of these things is almost guaranteed to explode once in a while.
 * Dib had to clean up the spurted pus in Rise Of The Zitboy, which basically flooded the whole classroom. He had to do it with a tiny sponge. Don't forget, this was spurted alien pus.
 * The Scrappy: Iggins was an intentional example of this. Some fans feel this way about Gaz too.
 * Excepting Zim, Gretchen, and Keef, Dib's classmates as a whole, who take Kids Are Cruel to a new level.
 * Tear Jerker:
 * The ending of Dib's Wonderful Life of Doom.
 * Dib's "death" in Bad, Bad Rubber Piggy.
 * "OH, GIR! GIIIIR! THEY'VE TURNED YOU INTO GROUND BEEF! HOW? WHY?????"
 * Too Good to Last: Sadly.
 * Ugly Cute: While many fans identify some of the characters as this, Jhonen Vasquez expressed his disdain for GIR being called "cute", because GIR isn't supposed to be cute. (just funny)
 * Unpopular Popular Character: Dib is VERY unpopular in the show, but he has a huge fanbase. Crew member Eric Trueheart said this on his blog about Invadercon:


 * Villain Decay: Whether you consider Zim or Dib the villain, they both got considerably worse at their tasks as the series advanced; early episodes would usually have one best the other, while later many ended with them both of them enduring some terrible trauma.
 * What Do You Mean It's for Kids?: One of the best examples.
 * The Woobie: Dib could be seen as such, or a Jerkass Woobie. Likewise Zim, although that might be slightly more controversial.
 * The unnamed blob alien in Abducted. Its description of its suffering is almost a Tear Jerker.
 * Gir has had his moments.
 * Yandere: Keef seriously gives off this vibe in Bestest Friend.