This is the whole story:
The Rugrats were a figment of Angelica's Imagination.
Chucky died a long time ago with this mother, and that's why Chaz is a nervous all the time.
Tommy was born dead, that's why Stu is always in his basement making toys for the son who never had a chance to live.
The DeVilles had an abortion, Angelica didn't know the gender so she created the twins
As for "All Grown Up" Angelica was bipolar and a schizophrenic who became addicted to various Narcotics, bringing her back to her childhood and thus her creations she obsessed over, because of time lapse between the present and the last time she interacted with her creations, she made them older, Angelica was constantly taking hits of acid, so she would never have to live without her creations who were her only company, in a judgemental world
Angelica's mom actually died of a heroine overdose, Angelica was schizophrenic/bipolar because she was a crack baby, additionally Drew in his depression married a gold digging whore, that Angelica idolized because she fooled herself into thinking it was her real mom, but always had a concept of her mom, Cynthia, and took a barbie doll, and made it after her mom's image, wearing an unwashed orange dress, and having jacked up hair, which is why she was so attached to it, later in life she followed in her mom footsteps w/ drugs and everything, dieing of overdose at age 13 when All Grown Up! was "canceled"
The only rugrat not to be fictional however, was unborn Tommy's brother Dil, however Angelica didn't know the difference between Dil and her creations, Dil didn't follow her commands, after endless crying and a refusal to disappear like the others did when angelica was angry with them, she hit him. And she hit him, screaming a screeching tune, Stu ran in and pulled his niece off of his only child, but it was too late, he had a brain hemerage, which resulted in a deformation, as he grew up his damage only became more evident, by the time he was 9 in All Grown Up! He lived as an outcast, being ridiculed for his weirdness, and retardation, the immense guilt over this is what led to her drug use and is what led Angelica to un-create the rugrats briefly, until her experience w/ hallucinogenics.
On a trip to Paris to find love, Chaz married a hooker named Kira (He was actually going to marry a different hooker, but she just wanted him for his money), who had a daughter named Kimi that was torn from her because she was a cocaine addict (Angelica imagined her from Kira's stories), he lost his mind after the death of his wife and was in denial that she was ever prostitute, upon return to America, Chaz and Kira married and she got her green-card, it was actually a really happy/romantic story, Kira continually struggled with addiction, but was relatively happy w/ her life, and Chaz
Suzie was actually Angelica's only friend, who entertained the thought of Angelica's creations, for her, She later became a physiologist and teamed up w/ Nickelodeon to make the Rugrats! When Angelica died of drug overdose, she helped arrange her funeral, Angelica's death was sad, because of her addiction, she was expelled from society, which lead to a break with reality, and her eventual death, she spent the last days of her life in the back of the school cafeteria, imagining friends around her, and playing with the lives of her creations.
Angelica died March 5, 1994http://answers.yahoo.com/question/index?qid=20110312155513AAjgiDo

YOU ARE READING
The Theories About Old Cartoons
FanfictionSome of the cartoons might have more then 1 theory but they are in different chapters so don't get them wrong. Oh I will organize the chapters frequently so if you have to go back and read what you missed... They are all important and need to be sha...