Sonic/Hey Arnold

Version 1 (by FirePuppy

 * Sonic as Arnold
 * Knuckles as Gerald
 * Rouge as Helga
 * Amy as Phoebe
 * Tails as Eugene
 * Shadow as Harold
 * Sonia as Rhonda
 * Manic as Stinky
 * Espio as Sid
 * Sally as Lila
 * Chuck Thorndyke as Grandpa Phil
 * Ella as Grandma Gertie

Version 2 (also by FirePuppy)

 * Chris Thorndyke as Arnold
 * Amy as Helga
 * Sonic as Gerald
 * Cream as Phoebe
 * Helen as Lila
 * Chuck Thorndyke as Grandpa Phil
 * Ella as Grandma Gertie