Grey DeLisle is a Guest Star as the voice of Baby Nani
She is also known for Frankie from Foster's Home for Imaginary Friends, Vicky from The Fairly OddParents, Daphne from Scooby Doo, Sam from Danny Phantom, Lor from The Weekenders, Azula from Avatar The Last Airbender, Yumi from Hi Hi Puffy AmiYumi, Kodachi Kuno from Ranma 1/2 and Lola and Lana Loud from The Loud House among other voices.
As of today she voices Clip, Phoon, Precious, Mary, Mr Stenchy, Mrs Sickly, Checkers, Twang, Plushy, Witch and Mrs Hasagawa on "Stitch and Experiments"