Gaz Membrane

Gazlene "Gaz" Membrane is the menacing younger sister of Dib Membrane and one of the supporting characters of Invader Zim. She is also the daughter of Professor Membrane. Known for her dark, violent and antisocial personality, Gaz has frequently expressed her disdain for the rest of the human race, seeming to care about only two things in the world: pizza and video games. Few have been known to get between her and those two things and walk away unscathed.

Gaz was voiced by Melissa Fahn in the original English version, and by Haruhi Nanao (七緒はるひ) in the Japanese dub. In the German dub she is voiced by Yvonne Greitzke, and in the Spanish dub she is voiced by Ana Lobo.

Appearance
Gaz is 10-12 Earth years old (during seasons 1-2, including the unfinished episodes). In the show, Gaz wears a short black dress with striped gray sleeves, striped reddish leggings, black shoes, and a necklace in the shape of a skull. When she was younger, she dressed similarly, but with the addition of a pink hair bow. Though her dress style is vaguely gothic in appearance, Jhonen Vasquez has stated that he does not see Gaz as a goth. In the comic, Gaz instead wears a teal t-shirt with a rabbit-like skull on it, a black skirt, and thick gray boots.

The most unique characteristics of Gaz are her hair and eyes. Her purple hair, resembling a stylized bob cut, is cubic and fashioned into five spikes, resembling a set of fangs. While normally closed, her eyes open when she is surprised, enraptured, or deeply irritated, revealing them to be amber in color.

It has been confirmed that Gaz, as well Dib and Professor Membrane, is a very pale Mexican.

Personality
Gaz is best known for her short-tempered, creepy, dark, cynical and antisocial nature, along with her obsessions over pizza and video games. If a person interferes with her, or with what she enjoys doing, she will often vow revenge, although whether or not she follows up on her vow depends on the situation. Two prime examples of her vengeful nature can be seen in "Battle-Dib" where she made sure Dib had a terrible time and couldn't accomplish his mission to see their father so he could show the Swollen Eyeball Network his findings on Zim just because he took the last pizza slice and in "Game Slave 2", where she stalks and terrorizes Iggins in order to get back a handheld console that was stolen from her.

In line with her dour nature, Gaz has rarely been seen smiling. The only instances where Gaz has smiled were in "Parent Teacher Night" (while laughing at Zim and Dib’s misfortunes), "The Wettening" (before dropping a water balloon on Dib), and "Gaz, Taster of Pork" (when sending her robotic toys after Dib). She also smiled a few times in the "Pilot", but given the many inconsistencies seen in it, its canonicity is dubious.

Gaz cares little for most people, and generally regards human interaction as nothing more than a means to an end. Several issues of the comics have shown her playing online with other gamers, although whether these are friends or simply another means to an end is unknown.

Her attitude towards her brother, Dib, is a bit more complex. Although she frequently complains about his behavior, his voice and his desire to save the Earth from Zim, she still walks to school with him, sits next to him at lunchtime, and even partakes in chatter when he’s nearby.

That being said, she will still inflict vengeance upon him if he crosses a line, their behavior with each other simply reflects typical sibling dynamics: squabbling, but affable enough.

Her opinion on Zim is probably slightly higher, while she thinks he's so bad at his job of invading, she at least acknowledges that he has powerful technology to destroy the planet but sees that he can't use it properly.

Although she is often angry and bitter, her few interests have been known to coax a more positive side out of her.

Role in Invader ZIM
Gaz is the only person, with the exception of Dib, to recognize that Zim is an alien. In "Bloaty's Pizza Hog", she replied to Dib's comment on Zim with an indifferent "but he's so bad at it", and in "Gaz, Taster of Pork", she remarked that he's "too dumb to take over the Earth".

Gaz often stays out of Zim and Dib’s conflicts, but on occasion, she has bailed out her brother - but only when it benefits her, like in "Bloaty's Pizza Hog" and "The Most Horrible X-Mas Ever".

Although she usually only plays a supporting role, often as the unwilling sidekick to Dib, she has been the main subject in some episodes of the show and issues of the comic.

Abilities
Throughout the show, Gaz has been shown to have several strange powers. These include, but are not limited to: offscreen teleportation, levitation, and some sort of pyrokinesis. On more mundane levels, she has also demonstrated the ability to pilot Irken ships and perform some type of martial arts (described in the "Ten Minutes to Doom" transcript as "ninja moves"). Although Steve Russel has stated that Gaz possesses some level of supernatural power, Vasquez has gone on record stating that Gaz has no genuine powers of any sort, and that she is simply "someone you don't want to anger".

If Gaz is a creation of Membrane’s, as Dib possibly is, then her more supernatural abilities could possibly be a result of her artificial nature.

Facts of Doom

 * Her voice actress, Melissa Fahn, has stated in the commentary for "The Most Horrible X-Mas Ever" that Gaz actually can show positive emotions and love others; she just does not like people interfering with her life and thinks she is better than others, hence her rotten and ill-mannered demeanor around most of the people she makes contact with.
 * Melissa also stated in the same commentary that Gaz is the smartest character, even more so than her own father, agreeing with Jhonen. This seems to explain why, unlike Dib, she doesn't view Zim as an ultimate threat to Earth.
 * Her misanthropy and abuse of her brother have caused controversy from the magazine Christian Parenting Today. Jhonen Vasquez has not made any comment on the controversy, nor has Melissa.
 * Ironically, in contrast to Gaz’s usual attitude, her voice actress, Melissa Fahn, is actually very pleasant and friendly.
 * Gaz's full first name is Gazlene, a play on the word gasoline. This play on words fits her personality rather well: like gasoline when ignited, Gaz has a very fiery temper when provoked.
 * She is one of the only main characters to have a full name with more than one syllable, or a name that is a wordplay.
 * The word "gaz" is also the name of a type of candy found in the Middle East.
 * The word, translated from Farsi, means "sap".
 * The word is also the French word for gas (as in the fuel).
 * Like Zim, Gaz is ambidextrous. She can be seen drawing with her right hand in "The Wettening" and with her left hand in "Bloaty's Pizza Hog".Super close up of Gaz's face.png
 * Although her eyes are amber in color, they were supposed to be light blue, as they were in the Pilot. A coloring error led to her current eye color.
 * A few issues of the comic series give Gaz different eye colors - Issue 5 presents them as green, while her cameo in Issue 17 presents them as purple.


 * In an image on Nicktoons's official site, Gaz is seen sitting playing her Game Slave 2 in Zim and Dib's classroom in front of Ms. Bitters, who is growling at her. However, "Parent Teacher Night" and "Gaz, Taster of Pork" notably explain that she is in Mr. Elliot's class.
 * Gaz is a playable character in Nicktoons MLB, alongside Zim. Best used as a pitcher, her throw (which leaves behind a trail of cartoony skulls) is one of the fastest in the entire game. Her clothes are the same as in the show, only her dress has pinstripes, and she wears a red baseball cap, which transforms into a first baseman's helmet when she is at first base.
 * In these concept sketches by Aaron Alexovich, she is shown with a similar helmet.
 * Gaz appears in Nicktoons: Globs of Doom, with Melissa Fahn reprising her role. She can be rescued alongside her father in the Skool stage. When you rescue her, she actually congratulates you; however, she is not playable.
 * In "The Most Horrible X-Mas Ever", Gaz's anger and hatred is said by Jhonen to be able to fix the Tak Runner. If not taken as a joke, this could suggest that Irken ships can be fixed faster by intense emotion alone, or that this is simply another power of hers.
 * Gaz is one of three characters shown to scare or intimidate Zim, the other two being Sizz-Lorr and Hobo 678.
 * Gaz's original clothing style in the show bears a strong resemblance to that of Pepito the Antichrist, another creation of Jhonen's.
 * Of the four main characters, she has the least screen time in the series.
 * Gaz is the character Jhonen Vasquez was the most excited to get back to writing for the comics. He said that she got the "least love in the series" and that she just "had a role to play, there really wasn't much room for her to be more of a person."
 * Jhonen also claimed that he likes her more in the comics since she's "more fleshed out" while in the show she was "a bit simple."