Adventure Time, Gravity Falls, and Avatar: The Last Airbender/Thomas

Cast

 * Finn (from Adventure Time) as Thomas
 * Jake (from Adventure Time) as Edward
 * Robbie Valentino (from Gravity Falls) as Gordon
 * Wendy Corduroy (from Gravity Falls) as Rosie
 * Mabel Pines (from Gravity Falls) as Emily
 * Dipper Pines (from Gravity Falls) as Percy
 * Carson (from Gravity Falls) as Murdoch
 * Sokka (from Avatar: The Last Airbender) as Duck
 * and more