Bonus Material: The Mature Edition is composed of non-canon stories that were simply incompatible in rating with the main series.
Creator's Favorite: Zim is the writer's favorite character (as noted by his pen name). The entire reason that this series exists is to give Zim a chance to be a competent villain while still maintaining the Original Flavor.
Creator Backlash: The author admittedly hates Gaz (and is famous for the number of Revenge Fics he's written aimed at her), so had no problem bashing her here. But since seeing her get proper Character Development in Invader Zim: Enter the Florpus, he's started reconsidering her and regretting writing her this way in this story.
Episode 8, which gave the author his first chance to indulge in his love of giving Gaz some Laser-Guided Karma.
Episode 10, which introduced Tenn and properly kicked off the seasonal Story Arc.
Episode 13, which brought Tenn to Earth and saw the first appearance of Bill.
Episode 17, which finally saw the culmination of the original idea for the series: Zim going rogue.
Episodes 20 and 21, which brought the season to an action-packed climax.
Season 2:
Episode 6, which allowed the author to start indulging into Worldbuilding for the Irken Empire.
Episode 7, which made use of the Mirror Universe concept, a favorite trope of the author's.
Episode 8, which allowed the author to have fun fully exploring Gaz and Nyx's relationship and continue the Worldbuilding.
Episode 13, which explores the characters' fears through nightmares, a trope that the author really likes.
Follow the Leader: Another writer on FanFiction.Net called Invader Derp was inspired by this story to do their own series of "seasons" of collected, loosely-connected one-shot stories. And on a specific note, that series copied this one's idea of calling the city setting "Doomsville".
Meaningful Release Date: The first chapter of the series was published to coincide with the release of the first issue of the Oni Presscomic series. And then the last chapter of Season 1 timed out to be published three years later to the day.
Refitted for Sequel: The plot of Team Save Earth infiltrating a Fan Convention used in Episode 9 of Season 2 was originally conceived for Episode 18 of Season 1 but was reworked into the idea of Gaz vs Iggins against the backdrop of a gamer convention. Needing filler for the first half of Season 2, the author revised the original idea.
Originally, the creator of Project Domination was just going to be a nameless rogue Meekrob. At the last moment, while writing the scene, the author was inspired to name him as a Shout-Out to Teenage Mutant Ninja Turtles (2003).
The fight between Norlock and Slab Rankle in Episode 12 concluding with Rankle launching Norlock away on a rocket was apparently a decision made late in that chapter's development.
The entirety of Episode 15 was based on a proposed outline from one of the author's friends, which he liked so much he decided to include it. Also, Squidman being involved wasn't in the original outline, but was added later in the planning process.
That same friend provided other outlines which served as the basis for the Mature Edition, which was only created because the author couldn't make them fit in the main series.
The Carnival of Killers situation in Episode 3 of Season 2 was originally envisioned years earlier as a standalone story that never got off the ground until the author decided to incorporate it into this series.
