Did Chuckie from Rugrats Die?

The kids are all right. Chuckie died in 1986 along with his mother, that's why Chaz is a nervous wreck all the time. Tommy was born in 1988, but he was a stillborn, that's why Stu is constantly in the basement making toys for the son who never had a chance to live.

How did Chuckie's mum die?

At the end of the episode, Chuckie's mother is revealed to have died of a terminal illness. It concludes with Chuckie and Chas looking through a box of her belongings, including a poem she had written for her son.

Did the Rugrats die?

All those rugrats are actually dead and were figments of Angelica's imagination. The only ones who were real are Susie, Kimi, and Dil, though the theory claims that the mentally unstable Angelica never actually met Kimi and that she was responsible for beating and ultimately crippling Dil.