Gaz Membrane is the mean younger sister of Dib Membrane and a member of Lexi's Mean Team appearing in the 2001 Nickelodeon animated series: Invader Zim. She has purple hair and amber/brown eyes. Her main outfit is composed of: a black dress with gray long sleeves, purple pantyhose and black shoes. She is voiced by Melissa Fahn (who is also the voice of Clara's younger sister Emma Rogers from Life With Ally). At her age, she is 11 years old.
- Professor Membrane (Father)
- Dib Membrane (Older Brother)
- Crandall Parker (from Teamo Supremo) (Love Interest)