Disclaimer:If I owned Invader Zim then it would probably get canceled by episode 5.

AN: Bump.

Summary: This story takes place three years from the time Zim landed on Earth. This story deviates from canon by the time Tak was introduced. Please also note that this story will mostly have elements that is not found in the show.

"Perfect Subject"

"Let me go!" She shrieked as she tried in vain to break the chains around her wrists while she was laying down on a metallic surgical bed. Struggle as she might, the metallic chains were just too strong and she began to lose strength. "Where are you?!" She continued shouting to the top of her voice. Ever since she was kidnapped, she was subjected to experiments that made her feel like she was being torn apart from the inside. Chemicals and other fluids were injected inside her body, making her feel lightheaded but still conscious enough to know that tests were still conducted on her. Even though her whole body felt numb, looking at all the needles pierced through her skin made her wince.

She also remembered when she was dissected.

"Interesting..." A feminine voice said just outside of her vision, no matter how much she craned her neck. "It seems that we have actually found the perfect specimen for our experiments." She could hear scribbling behind her, probably from the person behind her writing on some paper. "I must say, she is probably the best candidate we can find in this city."

"Come out of here and show yourself!" She shouted at the voice, now having someone to yell at gave her energy to double her efforts in trying to break off the chains.

"Astounding..." The voice said, clearly ignoring her, and she heard more scribbling. "Even though anesthesia was administered to her body, she's still able to exert that much force. Astounding indeed." Even though the words she said were of amazement, it was still said in a monotone. "Seems like I still need to run more tests to see how much her body reacts to certain chemicals."

She gritted her teeth as her temper rose higher. If there was one thing she hated more than being restrained, it was being ignored. One would think that teaching in a classroom filled with children would increase her patience but no, she still easily angered by the smallest of things. "Let me go at once or face the consequences!" Even though her threat was hollow, she still threatened the person restraining her.

"Subject still seems to be able to communicate." The female voice said, probably to a recorder. "Will now administer Experiment Z on her bloodstream and will observe how her body will react to it." She continued talking as the person finally came into view. As she had guessed, it was a female, a female doctor to be exact. The doctor looked impassively down at her while holding a syringe filled with red fluid, probably 'Experiment Z', in her hand. "Administering Experiment Z now." The doctor then pierced the syringe through her arm, face apathetic.

The moment the red fluid entered her body she felt cold. Then without warning, she could feel her bones cracking and most of her muscles cramping. Screams filled the entire floor as pain shot through her body and if the chains weren't holding her down she would've probably started thrashing around. The pain she was going through was unbearable and there was nothing she could do about it. She tried gritting her teeth but the screams kept coming out.

"Subject seems to have involuntary movements and she also seems to be in a state of hysteria." She and the doctor continued staring at each other, but to her horror, the doctor's face was still apathetic as if she was just watching something mundane. For the first time in her long, long life, a chill ran up her spine. Never had she encountered someone as cold as the person in front of her. She could feel the doctor's cold eyes pierce through her. She didn't know if her eyes were playing tricks on her, but she could have sworn that the doctor hadn't blink since she came into view. "Interesting indeed. Will inject an additional amount of Experiment Z in her bloodstream and await for further results in the morning." The doctor said in a monotone while injecting more red fluid in her body. "Then I will calibrate the brain, depending on the results, to see if it would accept verbal input rather than signals."

Even as the doctor left the room, she could still feel her body growing colder and her bones were starting to reform. She continued screaming as her muscles were tearing apart when her bones grew bigger and thicker. As she screamed, she could feel her teeth growing longer and sharper, vision grew sharper, her sense of smell became so strong that she could actually distinguish each chemical inside the room. Without her notice, her voice grew deeper, and deeper until it sounded demonic. Her nails were so sharp that they dug through the metallic bed with ease, not that she could take advantage of that since she was still too much in pain to even think straight. Suddenly, just as the chains around her wrist were starting to break, electricity ran through her body and metallic straps wrapped around her body, further keeping her in place. Her head tossing and turning from shear pain.

Just as she thought that she would die, sleeping gas entered her lungs and she fell unconscious immediately. Even as she was asleep, her body was still transforming to the point that she barely look human anymore. The only way for anyone to recognize her was because of her humanely shape and the fact that she was still wearing her glasses.

As Bitters lay there slumbering, the doctor was observing her through another room, looking at her rapidly mutating body with apathy.

"Good job, Alpha," The female doctor said, turning to look up at a towering figuring standing stoically behind her. Without waiting for it's response, she continued, "According to the readings I've got from the tests we conducted and from what is happening in there right now, I'm one hundred percent sure that we will succeed this time." She once again looked back to the Bitters, now seeing the elderly woman's fangs started to protrude from her mouth.

The figure behind her continued to look in front of it, not moving an inch.

"Interesting, isn't it?" The doctor asked rhetorically, "Never have I ever encountered such an amazing specimen, even amongst its species. From my understanding, their species' average lifespan is up to a hundred earth years but this one clearly surpassed that by a large margin. From this one we can gain enough knowledge for future projects. For now though, we shall wait and see." She finished talking while a helmet in the shape of a Game Slave was being lowered to be placed on her head, completely covering the upper part of her face and only showing her mouth below. After the helmet was secured, the front portion lighted up like flashlights on either side like she was wearing glasses.

The next day (Tuesday)

Zita was walking through the streets with a hood over her head. She decided that she wouldn't go to skool that day because she was still unnerved from what Zeke almost did to her. Actually, now that she thought about it, she probably wouldn't have minded if he didn't stop. She didn't know why she was having those kinds of thoughts but she couldn't care regardless. Then that would mean that whatever he was going to do to her, he would have her consent.

Zita shook her head, trying to get back at the task at hand. Even if she wasn't able to convince Zeke to leave her alone, maybe she would be able to convince her mother. If her theory was right, Zeke's mother would probably do what's best for her son and what's best for him is his education. Not only that, she could probably leave a good impression on her mother and thus win her favor. It was a brilliant plan even it if meant that she was going to be absent from skool for a day. Like they say, sacrifices must be done.

Zita sighed as she saw the Zeke's house from the distance and was now having second thoughts. She didn't know when it became personal but at the beginning it was always about his future. When he first enrolled to their class, she thought he was just some pretty boy with peanuts for brains. It was actually Gretchen who had the brilliant idea of approaching him the next day. She was first hesitant approaching him because she didn't want to get roped in whatever idiotic world the boy though he lived in. But, infuriatingly, Gretchen used her position as president as her reason, saying that it was supposed to be her job to help the new students get comfortable with their new class. With a groan, she and the other girls approached Zeke with smiles on their faces. Well, hers was for appearances' sake and Kat might as well not be there since she was ignoring him entirely, per usual.

So, like she did for previous new students, she greeted him with a bright smile which he returned. It was actually by that time where guys would act 'cool' and try and impress them, as if they would fall for some lame pickup lines, well, maybe Gretchen would. It was actually quite sad really, transferring to new schools, making a fresh start and all that, only to realize that the world doesn't revolve around them like you usual cartoons and whatnot.

Then something interesting happened, unlike the previous pretty boys, he was watching them with a critical eye. She almost broke her mask when she noticed that he was then focusing on her, and the fact that he was just staring at her eyes the whole time almost unnerved her. To her relief, he moved his focus to Gretchen, then to Kat, she could've sworn that his eyes slightly twitched, and finally to Jess. When it looked like he was not going to talk, she decided to introduce herself first.

That was when she started getting interested in him and decided to do a little investigation and what she found out about him left her mouth wide open. It wasn't as if she was looking through secret government plans, or things like that but something told her that this was far more surprising than that. Awards, accomplishments, recommendations, all those things that can only be achieved by people who devote all their lives in studying and will disregard everything else. She couldn't believe what she was reading and it also made her doubt if it was real or not. It was an article about a certain genius that wasn't only smart but also really good at sports, according to the article at least.

Article by article, news clipping, and other sources she have searched through about him, nothing but praises for Zeke Adrian Mathews, a genius among geniuses. A prodigy among his school's athletes. Perfect attendance, perfect exams, heck he even did some volunteer work. While all these were amazing, what she wanted to know was why he transferred to a new school, and why their skool specifically. Then the next day came and Zeke was she was hearing rumors about Zeke and Gaz Membrane together and that's when she drew the line.

Unlike Dib, Gaz skipped her classes and when she went in, she would spend the whole time ignoring her teachers. She really didn't care what the female Membrane did with her life but if there was a possibility that Zeke would be influenced by her then she would feel guilty that she didn't do anything to prevent it. And now? Now here she was, walking towards Zeke's house and try to convince his mother to make Zeke stop seeing Gaz for the sake of his grades.

At long last, Zita was now in front of the door and was ready to knock. She took a deep breath, raised her hand, and was about to knock when it opened. To say that she was shocked to what she saw was an understatement. The woman in front of her was tall, very tall actually. She was at least a foot taller than her and she had wavy black hair and black eyes. If she looked closely, she could see that the woman was not wearing any makeup except for some lipstick and she felt a little jealous how beautiful she was.

"Can I help you?" The woman asked nicely, although her eyebrow was raised, making her look like Zeke.

Before Zita could say anything she was interrupted by a voice behind her.

"Zita? What are you doing here?"

AN: Well, here you guys go! I hope you enjoy! A little bit of back story for Zita!