Invader Zim merchandise

The Series 1 set of Invader Zim toys

The first series of Invader Zim figures was released in the fall of 2004,[3] Series one contains alien Zim, undisguised GIR (with the Voot Carrier in its pig disguise from Attack of the Saucer Morons), Dib, Ms. Bitters, and Almighty Tallest Purple. Hot Topic variations of series one included Duty Mode Gir, screaming Zim, sneering Almighty Tallest Purple, frustrated Dib, and snarling Ms. Bitters. The Zim figure fits in the cockpit of the Voot Carrier, and the GIR figure can attach to some pegs behind the cockpit, so one could recreate the "Ride the Pig" scene from Attack of the Saucer Morons. Due to the success of the first series of Invader Zim toys,[4] Palisades Toys released the Invader Zim Miniature Figurine Set… of DOOM!, a separate set of smaller non-articulated figurines featuring Zim in the human disguise first seen in "The Girl Who Cried Gnome", GIR as a dog riding a pig, Gaz in her beaver disguise, and Dib turning into bologna from the episode Bolognius Maximus.[5] Since Palisades' termination, retailers such as Hot Topic have re-used this set as key chains. Other toys include a large 12" "Mega GIR" with a removable Dog Costume,[6] a Voot Cruiser with Zim and GIR figures and three convention exclusive two-packs:

• Undisguised Zim (featuring an equally undisguised expression of rage) with GIR wearing his "goofy" expression (his tongue hanging out and one eye half-closed) This set was presumably based on the episode Backseat Drivers from Beyond the Stars.
• Germ-Fighting Zim and Germy GIR. (from "Germs").
• Zim in his Old Man disguise with Doggy Suit GIR (from Walk of Doom).[7]

On October 19, 2005 Palisades Toys released the second series of Invader Zim figures. Series two contains human disguise Zim, dog disguise GIR, Gaz, Almighty Tallest Red (with an angry, yelling expression), and Zim's Roboparents. In the second series the Gaz, Gir and Zim figures come with a separate piece of Zim's house, and when put together, the base is roughly to scale with the figures, and even has Zim's lawn gnomes. Tallest Red's base connects to Tallest Purple's, and the Roboparents come with the couch and some of the living room from Zim's house. The Invader Zim Special Edition set of Doom! was produced by Palisades Toys, but released after the company had shut down, the Invader Zim Special Edition set of Doom toys based on Series One was released. It has the same characters but in different poses and styles. These are Screaming Human Zim, Doggie Suit Duty Mode GIR, Neutral-Faced Almighty Tallest Red, Hypnotized Dib, and “Shadow” Miss Bitters.[8]

Before the first series of action figures was released, Hot Topic released the characters from the first series with new head sculpts. These figures included a screaming version of Zim, Duty Mode GIR, Sneering Tallest Purple, Angry Dib, and a snarling Ms. Bitters.

There was also a series two variant released by Hot Topic in early 2006 produced by Palisades Toys.[9] These include Zim with Pustulio, Roboparents with a glitch, screaming costumed GIR (with the hood down), angry Gaz, and sneering Almighty Tallest Red. Hot Topic also made an exclusive which includes Zim with his germ fighting equipment and a germ-covered Doggy suit GIR.

In 2003, Wal-Mart began selling a DVD compilation of Nickelodeon cartoons. As well as three other cartoons, the episode of Invader Zim "The Nightmare Begins" was included.[10]

Media Blasters approached Nickelodeon with interest in Invader Zim DVDs[11] and on October 13, 2003, they put out a press release announcing that its anime division will be producing three double DVD sets starting in Spring 2004 and a limited edition box set.[12][13]

On May 11, 2004, Nickelodeon and Media Blasters released the first volume of an official Invader Zim DVD collection. Titled Volume 1: Doom Doom Doom, the two disc set includes nine half-hour episodes (most of which are composed of two quarter-hour sub-episodes). The DVD collection also includes numerous "extras" such as the Zim pilot episode and alternate audio tracks with commentary by series creator Vasquez and various cast/crew.[14]

On August 31, 2004 the second volume titled Volume 2: Progressive Stupidity was released, and like Volume 1, contains two discs (labelled discs 3 and 4).[15] This volume was originally supposed to have very different art on the cover. However, Nickelodeon rejected it, but said they could use it if everyone in it was having fun. Jhonen Vasquez said in an interview with IGN that "That's just not my show, and I figured it would be false advertising."[16]

On October 12, 2004 the third and final volume titled Volume 3: Horrible Holiday Cheer was released.[17] The DVD sets have animatics, apparently accurate Irken subtitles, and digitally restored and remastered picture and sound, as well as a Spanish language track. They also include commentary with the actors, writers, and the production staff.

The box set was released on April 12, 2005.[18] A week later the box set edition containing all the volumes was released on April 19, 2005. The box is in the shape of Zim's house from the series. The door opens to reveal the DVDs, while the top opens to reveal a Duty Mode GIR figure which is the same size as the GIR from Palisades figure. An extra disc is included with the box, containing an Interview with Kevin Manthei, Sound Design Featurette, a Sample Soundtrack, the uncut version of The Most Horrible X-Mas Ever,[19] and the vocal recordings from unfinished Zim episodes. The manufacturer has discontinued this item, and it is no longer for sale.

Another box set for Invader Zim was released featuring the three DVD volumes boxed together, with the art of Volume 1 on the cover. The DVD volumes were unchanged except for Volume 3, which featured the uncut version of The Most Horrible X-Mas Ever instead of the regular TV version, which had originally been included by mistake.

The Invader Zim DVDs were met reasonably by critics. Criticisms were drawn by the interlacing of the video causing some quality problems.[20] The DVDs gained praise for the quality of the audio and included commentaries. The quality of the video was also commended.[21] The box set received excellent reviews for its quality and look, specifically the concept of the house design being used for the box.[22]

Both of the original box sets have gone out of print, both the Zim's House set and the Complete Invasion set. However, as of April 2, 2010, new Invader Zim DVDs have become available for online order on Amazon.

The series has been separated into two different DVD cases-the first is for season one, and features a close-up of Zim's face, without his disguise on. The background is grey and spotted with skulls similar to the one Gaz wears on her necklace. The second DVD contains season two, features a close-up of Gir's face, who is wearing his dog costume. The background is purple and spotted with bones. Although these DVDs contain episodes from Season One and Two in order, they do not have the special features that were on the previous DVD releases. There are no commentary tracks or interviews on the discs. The episodes are burned onto a DVD-R similar to many shows that Nickelodeon has sold through Amazon such as Doug, Rugrats, Rocko's Modern Life, Aaahh!!! Real Monsters, Hey Arnold!, The Angry Beavers, The Adventures of Jimmy Neutron: Boy Genius, and Danny Phantom, and will not play on certain DVD and Blu-ray players.

A DVD was released in February 2011 called Invader Zim: Operation Doom. This set contains the highest-rated episodes to air on Nicktoons Network throughout 2010. The DVD sales were a success. It is of note that the DVD was produced shortly after a fan-driven greeting card mailing inspired by Jhonen Vasquez's blogpost detailing the series' near revival in 2010.