The Rugrats really were a figment of Angelica's Imagination.
Chucky died a long time ago along with this mother, that's why Chaz is a nervous wreck all the time.
Tommy was a stillborn, that's why Stu is constantly in the basement making toys for the son who never had a chance to live.
The DeVilles had an abortion, Angelica couldn't figure whether it would be a boy or a girl thus creating the twins
-----------------------------
As for "All Grown Up" Angelica was a bipolar schizophrenic who, as a teenager 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 constantally 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, additionaly 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 oranged 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 didnt know the differace between Dil and her creations, Dil didnt follow her commands, after endless crying and a refusal to disapear like the others did when angelica was angry with them, she hit him. And she hit him, screaming a screaching tune, Stu ran in and pulled his neice off of his only child, but it was too late, he had a brain hemerage, which