Grandpa Abe Simpson/Thomas

Cast

 * Grandpa Abe Simpson as Thomas
 * Apu as Edward
 * The Yes Guy as Henry
 * Superintendent Chalmers as Gordon
 * Mr. Burns as James
 * Ralph Wiggum as Percy
 * Homer as Toby
 * Michael D'Amico as Duck
 * Kearney as Donald
 * Dolph as Douglas
 * Lou as Oliver
 * Moe as Diesel
 * Lenny as Bill
 * Carl as Ben
 * The Sea Captain as BoCo
 * Agnes Skinner as Daisy
 * Marge as Mavis
 * Lionel Hutz as Stepney
 * Allison Taylor as Emily
 * Old Gil as Bertie
 * Dr. Hibbert as Salty
 * Sanjay as Harvey
 * Legs as Arry
 * Louie as Bert
 * Martin Prince as Fergus
 * OJ (from TUGS) as Skarloey
 * Billy Shoepack (from TUGS) as Rheneas
 * Bluenose (from TUGS) as Sir Handel
 * Owen (from Theodore Tugboat) as Peter Sam
 * Ten Cents (from TUGS) as Rusty
 * Zorran (from TUGS) as Duncan
 * Old Rusty (from TUGS) as Duke
 * Shelburne (from Theodore Tugboat) as Freddie
 * Zip & Zug (from TUGS) as Mighty Mac
 * Reverend Lovejoy as Arthur
 * Edna Krabappel as Lady
 * Comic Booky Guy as Diesel 10
 * Rod Flanders as Splatter
 * Todd Flanders as Dodge
 * Toby (from TTTE) as Sir Topham Hatt
 * Mavis (from TTTE) as Lady Hatt
 * Billy (from TTTE) as Stephen Hatt
 * Flora (from TTTE) as Bridget Hatt
 * James (from TTTE) as The Barber
 * Gordon (from TTTE) as The Angry Policeman
 * Database as Terence
 * Hans Moleman as Trevor
 * Eddie as Toad
 * Snake Jailbird as Bulgy
 * Jessica Lovejoy as Elizabeth
 * Russ Cargill as George
 * Principal Skinner as Spencer
 * Krusty the Clown as Cranky
 * Hiro (from TTTE) as Mr. Percival
 * Jacqueline Bouvier as Rosie
 * Top Hat (from TUGS) as Smudger
 * Hercules (from TUGS) as Proteus
 * Barney Gumble as Hank
 * Lisa as Flora
 * Red Fin (from Salty's Lighthouse) as Bertram
 * Sally Seaplane (from TUGS) as Madge
 * Ned Flanders as Hiro
 * Theodore (from Theodore Tugboat) as Luke
 * Bluenose (from Theodore Tugboat) as Millie