Episodes Casting and the evolution of characterization The existing cast modified their voices for their characters' new ages. Tommy's voice actress, E.G. Daily, noted "It was a little harder when we were doing the first batch of episodes, when they were just coming in and trying to define everybody and how they've grown". Susie's character changes included having "a little more sass, a little less innocence and a little more bottom end". All Grown Up! attracted 30 million viewers a month, including a large number of 12 to 14-year-olds. The producers did not delve into the "characters' loss of innocence" with topics such as sex and drugs in favor of issues relevant to 9 to 11-year-olds, the show's target demographic. While the producers did not take the teen approach with All Grown Up!, they did with another Klasky Csupo show As Told by Ginger. Executive producer Arlene Klasky stated "It was always in the back of our minds that we would love to see what these characters were like as they grew". Susie's voice actor, Cree Summer, noted that while part of the appeal to this kind of TV show is not growing up, she noted a natural evolution of the show after 12 years on the air. Daily said that while her character was still the star of the show, he was older, wiser, and using more contemporary language. Cyma Zarghami, Nickelodeon's executive vice president and general manager at the time, said "The tween special proved kids are ready to embrace these beloved characters in a whole new realm. The Rugrats property is 11 years old, so it feels just right to have the babies turn into tweens in their 12th year on the air". On the evolution of Angelica, Marjorie Cohn, executive vice president for development and original programming at Nickelodeon explained: ''She's the center of the universe, and she keeps bumping up against forces that tell her she's not. The writers mellowed Angelica and her voice actress addressed "I welcome the new development in her character, the way she can be vulnerable. She's getting some real acting challenges from the material the writers are coming up with". She compared her role to Bart Simpson's voice actress who will likely play the 10 year old until retirement, noting that now she could play the same character with a "bit more sophistication". She's become more vulnerable and has to