As a voice actress, DiCicco had lead roles on "The Buzz on Maggie", "The Emperor's New School", "Loonatics Unleashed", and "Shuriken School". She had recurring roles on "The Replacements", ', ', "Bratz", and "All Grown Up!". She co-starred as Shelby in the DreamWorks film "Over the Hedge" and voiced Gwen on Amy Poehler's television series for Nickelodeon, "The Mighty B!". DiCicco was the voice of Master Viper in the "Kung Fu Panda" short film "Secrets of the Furious Five". In 2012, she joined the Cartoon Network show "Adventure Time" starting from its season three finale, where she voiced Flame Princess; the show has now run over seven seasons. She also voiced in "Pound Puppies" and "Gravity Falls". She also voices Lynn and Lucy Loud in the Nickelodeon animated series, "The Loud House". She was nominated for a Daytime Emmy in 2008 for her performance as Malina on "The Emperor's New School", but lost to Eartha Kitt, who did Yzma in the same series. DiCicco provides the voice of Toby the cactus and the sounds of the mule Clementine on "Sheriff Callie's Wild West".