Kath Soucie is a Guest Star as the voice of Trick or Treater. She has also done voices for Tiny Toons, Rugrats, Hey Arnold, Recess, Pepper Ann, 101 Dalmatians The Series, As Told By Ginger, The Weekenders, Ranma 1/2, All Grown Up, Danny Phantom, Dexter's Laboratory, The PowerPuff Girls, Space Jam, The Critic and Futurama just to name a few of the many projects she had done over the years.