Disclaimer
I don't own Rugrats or All Grown Up. All rights are owned by Nickelodeon and Klasky Csupo. This is where Kurt and Brian are appearing in the series. Cause if you watched the pilot, Angelica and Chuckie appeared later in 1991. Here's Kurt's bio information.
Kurt Cobain- 24
Kurt is a grunge rock addict who is mean to the kids for no reason. It is probably his anger issues. He calls his cousins and him dumb and other names. His birthday is on Feb 20, 1967. He is an only child who was spoiled at a young age. He has one daughter name Frances Bean Cobain.