I've always wondered about Gaz's side of her family and how she was born. So far it only has been revealed that her brother Dib was a biological creation of Prof. Membrane and Gaz's origin was never mentioned by the writers of the Invader Zim series or Jhonen Vasquez.

There are speculations of her being a natural born child (meaning that she had a mother); according to some information I found about Membrane's deceased wife (that may or may not be true) on a few IZ fansites, blogs, and other web pages.

On Membrane's biography pages, it said that his wife suffered a horrible fate and now her remains live in a jar somewhere.

This fanfic explains a possible story about Gazlene and her mother (if she was naturally born).

Ever since she was a very little girl, Gaz had enjoyed life with her mother. As Gaz's mother passed, her life completely changed.

-Present Scene-

Gaz awoke on a Monday knowing that the weekend was over and Skool was about to start. As soon as she got out of bed and was ready to start the day, her brother Dib noticed that she did not seem to have an appetite for breakfast at the dining table and was not acting like her normal self.

"Hey what's bothering you today Gaz?", Dib asked.

"Oh nothing.", she replied sarcastically pretending that there was nothing wrong.

"Are you serious?", her brother replied back with a concerned face.

"Do I look okay to you?", Gaz answered back.

"Honestly, today you seem even more depressed and edgy than you normally do.", her brother replied again.

Dib stared at his sister's face and it looked like she was about to shed a few tears. He may have forgotten that it was one of the most tragic days for her.

"You're forgetting about what day it is again aren't you?", said Gaz.

"Oh, I see now.", Dib replied.

"It's the anniversary of mom's death.", she reminded him.

"You don't remember about her do you?", Gaz said again.

"Come to think about it, I do. I remembered how she used to take care of us when we were very little.", said her brother.

"Before mom died, she was the one who made home cooked meals for the family, took us out to fun places, and we also celebrated special days together with her."

"I missed those days when she was around and you did not bother me as much.", Gaz replied.

Right after as Gaz and her brother finished breakfast, a floating monitor with with Prof. Membrane's recording came into the kitchen.

"Hey kids don't be late for Skool. The bus will take off without you if you don't get out of the house at the right time.", Membrane said through the floating monitor.

"Okay dad." both Gaz and Dib said as they were about to leave for class.

The siblings quickly headed out of their house to wait for the bus to go to Skool.

At this time, Dib didn't know that he was not the biological son of Membrane's wife who was Gaz's mother since he was a creation of Membrane. He will later discover that he was an experiment created by his "father".