South Park/Sonic Underground

Cast

 * Stan Marsh as Sonic
 * Kenny McCormick as Manic
 * Wendy Testaburger as Sonia
 * Kyle Broflovski as Knuckles
 * Chef as Uncle Chuck
 * Eric Cartman as Dr. Robotnik
 * Shadow and Silver (from Sonic) as Sleet and Diego
 * Sharon Marsh as Queen Aleena