Mario/Thomas

Special Guests from The Simpsons
 * Mario as Thomas
 * Luigi as Edward
 * Diddy Kong as Henry
 * Donkey Kong as Gordon
 * Oogtar as James
 * Yoshi as Percy
 * Toad as Toby
 * Detective Herlock Holmes as Duck
 * Mallow as Donald
 * Geno as Douglas
 * Olimar (from Pikmin) as Oliver
 * Bowser as Diesel
 * Koopa Troopa as Bill
 * Koopa Paratroopa as Ben
 * Link (from The Legend of Zelda) as BoCo
 * Wendy O. Koopa as Daisy
 * Birdo as Mavis
 * Yellow Toad as Stepney
 * Dixie Kong as Emily
 * Shy Guy as Bertie
 * Popeye as Salty
 * Banjo (from Banjo) as Harvey
 * Wario as Arry
 * Waluigi as Bert
 * Blue Toad as Fergus
 * Baby Mario as Skarloey
 * Baby Yoshi as Rheneas
 * Donkey Kong Jr. as Sir Handel
 * Baby Luigi as Peter Sam
 * Conker as Rusty
 * Bowser Jr. Duncan
 * Fox as Duke
 * Funky Kong as Freddie
 * Blue Yoshi and Blue Shy Guy as Mighty Mac
 * Red Toad as Arthur
 * Rosalina as Lady
 * Smithy as Diesel 10
 * Lemmy Koopa as Splatter
 * Iggy Koopa as Dodge
 * Toadsworth as Sir Topham Hatt
 * Orange Toad as Terence
 * Toadbert as Trevor
 * Kiddy Kong as Toad
 * R.O.B. as Derek
 * Ludwig Von Koopa as Bulgy
 * Candy Kong as Elizabeth
 * Boshi as George
 * Chunkey Kong as Murdoch
 * King Boo as Spencer
 * Tiny Kong as Caroline
 * Cranky Kong as Cranky
 * Boo as Scruffey
 * Professor E. Gadd as Mr. Percival
 * Fly Guy as Harold
 * Peach as Rosie
 * Purple Toad as Charlie
 * Lady Hatt as Lady Hatt
 * Black Yoshi as Neville
 * Daisy as Molly
 * Fawful as D261
 * Red Koopa Kid as Lorry 1
 * Green Koopa Kid as Lorry 2
 * Blue Koopa Kid as Lorry 3
 * Baby Bowser as Smudger
 * Robo Koopa as Bulstrode
 * Stanley The Bugman as Stanley
 * Green Toad as Whiff
 * Falco (from Star Fox) as Victor
 * Slippy (from Star Fox) as Kevin
 * Bottles (from Banjo) as Bash
 * JamJars (from Banjo) as Dash
 * Mumbo Jumbo (from Banjo) as Ferdinand
 * The Sonic Characters as The Pack
 * Sonic as Jack
 * Tails as Alfie
 * Uncle Chuck as Nelson
 * Lucas as Oliver (Pack)
 * Scratch & Grounder as Max & Monty
 * Chuck Thorndyke as Kelly
 * Knuckles as Byron
 * Big as Ned
 * Amy Rose as Isobella
 * Antoine as Patrick
 * Rotor as Buster
 * Queen Acorn as Miss Jenny
 * King Acorn as The Foreman
 * Baby Peach as Annie
 * Baby Daisy as Clarabel
 * Luma as Dennis
 * Alley Koop as The Spiteful Breakvan
 * Madame Flurrie as Madge
 * Prince Hugo The Huge as Hank
 * Toadette as Flora
 * Bombette as Old Slow Coach
 * Ms. Mowz as Henrietta
 * Lanky Kong as Billy
 * Rudy the Clown as Hector
 * Professor Frankly as Hiro
 * Henry as Den
 * Orville as Dart
 * General White as Bertram
 * Goldbob as Proteus
 * Bob-omb Buddy as Scruff
 * Mr. Game & Watch as Captain
 * Squirtle (from Pokemon) as Flynn
 * Homer as Mr. Conductor (Alec Baldwin)
 * Lenny as Mr. Conductor Junior
 * Grampa Abe as Burnett Stone
 * Lisa as Lilly
 * Bart as Patch
 * Marge as Stacy Jones
 * Principal Skinner as Billy Twofeathers
 * Mr Burns as PT Boomer