Bart Simpson/Thomas My verison

Verison 1

 * Bart as Thomas
 * Great Grandpa Simpson as Edward
 * Principal Skinner as Henry
 * Dr. Hibbert as Gordon
 * Groundskeeper Whille as James
 * Ralph as Percy
 * Moe as Toby
 * Homer as Duck
 * Snake Jailbird as Diesel

Verison 2

 * Bart as Thomas
 * Moe as Edward
 * Principal Skinner as Henry
 * Barney Gumble as Gordon
 * Ned Flanders as James
 * Homer as Percy
 * Chief Wiggum as Duck
 * Carl as Donald
 * Lenny as Dougals
 * Martin as Ollver

Verison 3

 * Bart as Thomas
 * Moe as Edward
 * Ned Flanders as Henry
 * Moe as Gordon
 * Principal Skinner as James
 * Homer as Percy