Villain Overview
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 of mind your pizza stealing heart!!!!
~ Gaz
I've never missed a new pizza day at Bloaty's! If this next one is ruined by your magical stupidity, I will make you wish you had rabid weasels teleported into your skull instead of having a sister! I'll wait until you sleep and stuff all of your paranormal junk into your big giant paranormal head, and chew on your eyeballs after I PLUCK THEM OUT!
~ Gaz threatening Dib.

Gazlene "Gaz" Membrane is a short-tempered and vicious girl and one of the main characters of the cartoon Invader Zim and the deuteragonist its 2019 TV movie Enter the Florpus.

Gaz is the younger sister of Dib and is a dark, curmudgeonly, brooding, and antisocial girl that only likes video games, books, and pizza. She is often either annoyed by or indifferent to Dib's obsession with the paranormal and his rantings about Zim being an alien. She does in fact know that Zim is an alien out to conquer earth, but thinks that he is too incompetent to succeed.

She was voiced by Melissa Fahn.


Gaz is generally a girl that is only nice to a small number of people, her workaholic dad included. When she is angry, however, Gaz becomes a furious bringer of vengeance, mysteriously capable of supernatural powers such as levitation, pyrokinesis, and umbrakinesis. In this state, she is extremely violent-minded and threatening towards whoever angers her with fates worse than death. She also controls an army of robotic animal dolls equipped with deadly weaponry. They are her "security guards" and are trained to eat human flesh (or so she says).

She hates just about everything except video games and eating junk food, especially pepperoni pizza. She avoids making friends with anyone, usually only is around Dib just to insult him for his big head and miserable failures to defeat Zim and expose him to Mysterious Mysteries, and at school she just continues to play her video games or keep stuffing her face. She hardly spends any quality time with her father Professor Membrane due to how much he prioritizes his job over family, and whenever she is around her father, she gets enabled and spoiled rotten by Professor as he gives her whatever she wants (a dinner night at Bloaty's Pizza Hog or getting the new Game Slave 2). 

Despite her dislike for her brother, she sometimes helps him in his quests, but only when it benefits her. However, deep inside, she actually cares about Dib and loves him like any sibling. When they fail to find their father and Dib cries believing that Zim will succeed in destroying the Earth in Enter the Florpus, rather than picking on him as usual, Gaz confesses that she only picks on him when she knows he can take it but that they are family.

Gaz is shown to easily be able to thwart any schemes by the show's antagonists (Zim, Tak, etc.) with absolute ease. She was able to destroy Zim's base on multiple occasions, and defeated Tak by splashing her face with soda (She did this to Zim earlier in the same episode as well).

All of Gaz's negative traits, however, have made her character controversial, and she was criticized by many Christians when the series first premiered. In spite of her dark nature and misanthropic attitude, her voice actress Melissa Fahn is actually quite sweet and pleasant, and she has confirmed that Gazlene can love and have positive emotions; Gaz just has a big ego and thinks she's better than everyone else, hence her attitude and demeanor.


Though her dress style is vaguely Gothic in appearance, Gaz has never been established as an actual goth, something which has been stated by Jhonen Vasquez himself. Coincidentally, Gaz's clothing style bears a strong resemblance to that of Pepito the Antichrist, another creation of Jhonen's. Around Gaz's neck is a necklace in the shape of a stylized human skull. When she was younger, she still wore a black dress but had a bow in her hair. Her outfit in the comic series was redesigned, and as a result the new outfit makes her look less of a goth, now having a green/gray shirt with a 8-bit bunny skull on it and a black skirt.


  • Her full name "Gazlene" is a play on the word "gasoline", possibly a reference to her destructive and violent nature.


           Invader Zim Villains

Main Characters
Zim | GIR | Gaz Membrane

Irken Empire
Control Brains | Almighty Tallests | Tak | Sizz-Lorr | Mini Moose

Ms. Bitters | Skool Principal

One-Time Antagonists
Nightmare Bitters | Mortos der Soulstealer | Sergeant Hobo 678 | Planet Jackers | Santa Claus | Peepi | Globulous Maximus | Evil Syndicate

           Nickelodeon Villains

TV Series
Ren Höek | Angelica Pickles | Ed Bighead | Lars Rodriguez | Miranda Killgallen | Glowface | Tlaloc | Dr. Blowhole | Gart Default | Coverton | Sta'abi | Leslie Noodman | Amanda Killman

Invader Zim
Almighty Tallests | Zim | Gaz Membrane | Tak | Ms. Bitters | Control Brains | Irken Empire | Mortos der Soulstealer | Iggins | Sizz-Lorr | Santa Claus (Invader Zim) | Mini Moose

Skrawl | Quicksand Man | Vinnie Raton | Terry Bouffant

El Tigre
Sartana of the Dead | Black Cuervo | Voltura | Lady Gobbler | Dr. Chipotle Jr. | Dr. Chipotle Sr. | Señor Siniestro | Django of the Dead

Back at the Barnyard
Nora Beady | Phlegmy Boy | Mertin Fargleman | Cave Cow | Inga |

Fanboy & Chum Chum
Kyle Bloodworth-Thomason | Lenny Flynn - Boyle | Boog Shlizetti | Sigmund the Sorcerer | Mr. Trick | Berry the Ice Monster | Professor Flan | Necronomicon

T.U.F.F. Puppy
Verminious Snaptrap | Francisco | Larry | Ollie | Bad Dog | Chameleon | Katty Katswell | Bird Brain | The Caped Cod

           NICK Movies Villains

Animated Features
Scar Snout | Rex Pester | Angelica Pickles | Coco LaBouche | Jean-Claude | King Goobot | Ooblar | Poultra | Alphonse Perrier du von Scheck | Nick Vermicelli | Big Bob Pataki | Sloan Blackburn | Bree Blackburn | Poachers | Siri | Sheldon Plankton | Karen Plankton | Mr. Krabs | Dennis | Cyclops | Victor | Dag | Nora Beady | Coyotes | Tortoise John | Rattlesnake Jake | Bad Bill | Hawk | Balthazar Douglas Peterson | Maybelle | Ivan Ivanovitch Sakharine | Allan | Tom | Pedro | Falcon | Aristides Silk | Red Rackham | Burger-Beard | Lasombra | Chimpanzombies | Zim | Gir | Mini Moose | Gaz Membrane | Almighty Tallests | Irken Empire

Live-Action Movies
Marion Hawthorne | Kurt Bozwell | Troy and Griffin | Roxanne | Henry Gates | Richard and Jay | Count Olaf | Hook-Handed Man | Henchperson of Indeterminate Gender | Bald Man | White-Faced Women | Mulgarath | Red Cap | Goblins | Jake | Max | General Zhao | Fire Nation (Fire Lord Ozai, Zuko & Azula) | Shredder | Foot Clan (Eric Sacks, Karai, Baxter Stockman & Bebop and Rocksteady) | Krang | Reece Tenneson | Burke | Alejandro Gutierrez | Swiper the Fox

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