Cast[]
- Thomas as Sonic - (Thomas and Sonic are both wear blue and the main heroes)
- Percy as Tails - (Percy and Tails are both yongest and best buds to Thomas and Sonic)
- Duncan as Antoine D'Coolette - (Antoine D'Coolette's voice suits Duncan)
- Duck as Rotor - (Duck and Rotor are both happy and caring)
- Emily as Princess Sally - (Emily and Princess Sally are both beautiful and the main females)
- Molly as Bunnie Rabbot - (Molly and Bunnie Rabbot are both wise and kind)
- Toby as Uncle Chuck - (Toby and Uncle Chuck are both old)
- James as Knuckles - (James and Knuckles are both wear red and have anger issues)
- Rosie as Amy Rose - (Rosie and Amy Rose are both wear pink and love Thomas and Sonic)
- Mellisa (from Onion Pacific/Casey Jr. and Friends) as Cream
- Cerberus (from The Little Engine That Could '2011 Film') as Dr. Robotnik/Eggman - (Cerberus and Dr. Robotnik/Eggman are both the main villains)
- Diesel as Snivley - (Diesel and Snivley are both devious and stupid)
- Bill and Ben as Scratch and Grounder - (Bill and Ben are twins, just like Scratch and Grounder are)
- George as Coconuts - (Coconuts' voice suits George)
- The Spiteful Breakvan as Cluck
- Daisy as Momma Robotnik - (Daisy and Momma Robotnik are both evil and horrid)
- Madge as Dulcy - (Madge and Dulcy are both wear green)
- Gordon as Ari - (Gordon and Ari are both big and proud)
- Murdoch as King Acorn - (Murdoch and King Acorn are both fathers of Emily and Princess Sally)
- Donald and Douglas as Da Bearz - (Donald and Douglas are twins, just like Da Bearz are)
- Stepney as Lucas - (Lucas' voice suits Stepney)
- Edward as Captain Rescue - (Edward and Captain Rescue are both smart and clever)
- Elizabeth as Breezie
- Sir Handel as Robotnik Jr.
- Georgia (from The Little Engine That Could/Casey Jr. and Friends) as Lupe
- Sally Seaplane (from TUGS) as Nicole
- Casey Jr. (from Disney's Dumbo/Casey Jr. and Friends) as Manic
- Tillie (from The Little Engine That Could/Casey Jr. and Friends) as Sonia
- Johnny (from The Brave Engineer/Casey Jr. and Friends) as Sir Bartleby MontClair
- Arry and Bert as Sleet and Dingo - (Arry and Bert are twins, just like Sleet and Dingo are)
- Bertie as Cyrus - (Cyrus' voice suits Bertie)
- Mavis as Rouge - (Mavis and Rouge are both were rude in their debuts)
- Skarloey as Male Cheese
- Rheneas as Chocola
- Emma (from Jim Button/Casey Jr. and Friends) as Cosmo Prower - (Emma and Cosmo Prower are both wear green)
- Toots (from Porky's Railroad/Casey Jr. and Friends) as Chris Thorndyke
- Tootle (from Little Golden Book Land/Casey Jr. and Friends) as Danny
- Jebediah (from The Little Engine That Could/Casey Jr. and Friends) as Chuck Thorndyke - (Jebediah and Chuck Thorndyke are both old)
- Henrietta as Female Cheese
- Splatter and Dodge as Bocoe and Decoe - (Splatter and Dodge are twins, just like Bocoe and Decoe are)
- Henry as Big the Cat - (Henry and Big the Cat are both fat and clumsy)
- Oliver as Espio - (Oliver and Espio are both western)
- BoCo as Vector - (BoCo and Vector are both wear green)
- Billy as Charmy - (Billy and Charmy are both silly)
- Hector as Shadow - (Hector and Shadow are both wear black)
- Diesel 10 as Professor Gerald Robotnik - (Diesel 10 is a real main villain in Thomas and the Magic Railroad)
- Tom Jerry (from Onion Pacific/Casey Jr. and Friends) as Mr. Tanaka
- Duke as Mr. Stewart
- Peter Sam as Rocket the Sloth
- Spencer as Sam Speed - (Spencer and Sam Speed are both have names starting with 'S')
- Freddie as Professor Von Schlemmer
- Harvey as Hawk - (Harvey and Hawk are both have their names starting with "Ha")
- Farnsworth (from The Little Engine That Could/Casey Jr. and Friends) as Dragon Breath - (Farnsworth and Dragon Breath are both mean)
- Pete (from The Little Engine That Could/Casey Jr. and Friends) as Music Destroyer - (Pete and Music Destroyer are both wear red)
- Blister 1 and Blister 2 (from RWS) as Heavy and Bomb - (Blister 1 and Blister 2 are twins, just like Heavy and Bomb are)
- Bertram as Ixis Naugus
- S.C.Ruffey as Bokkun
- Ten Cents (from TUGS) as Froggy
- Toad as Hacker
- Harold as Omochao - (Harold and Omochao are both fly in the air)
- Fergus as Chip - (Percy can't be Chip, Percy is childlike, Chip is kind of a villain)
- Mighty Mac as Mighty and Ray
- Ivo Hugh (from RWS) as Wallace A. Ditso
- Iron Duke (from RWS) as Athair
- Victoria (from RWS) as Ella
- Lord Harry (from RWS) as Emerl
- Toby's Brother (from RWS) as Cat
- Stanley as Silver - (Stanley and Silver are both wear white)
- Lady as Blaze - (Blaze's voice suits Lady)
- Belle as Lindsey Thorndyke
- Flynn as Nelson Thorndyke
- Old Slow Coach as Queen Aleena
- Cranky as Sergeant Doberman
- Bulgy as Dr. Eggman Nega - (Bulgy and Dr. Eggman Nega are both evil)
- Flora as Tikal
- Patrick as Pachacamac - (Patrick and Pachacamac are both have names starting with "Pa")
- Max and Monty as Jet and Storm - (Max and Monty are twins, just like Jet and Storm are)
- Gail (from Ernest the Engine and Others) as Wave
- Evil Thomas (a fan-made Thomas character) as Metal Sonic - (Evil Thomas and Metal Sonic are both evil and attempt to kill poor Thomas and Sonic)
- Evil Emily (a fan-made Thomas character) as Sallybot
- Evil Percy (a fan-made Thomas character) as Tails Doll
- The Chinese Dragon as Egg Golem - (The Chinese Dragon and Egg Golem are both big, strong, evil, powerful, and scary)
- Arthur as Griff
- Trevor as King Arfur
- Salty as Captain Squeege
- Tracy (from The Little Engine That Could '2011 Film') as Princess Elise
- Lillie Lightship (from TUGS) as Catty Carlisle
- Bluenose (from TUGS) as Pseudo Sonic
- Grampus (from TUGS) as Robot
- Shrimpers (from TUGS) as Echidnas
- Guysborough (form Theodore Tugboat) as E-123 Ω Omega
- Den and Dart as Orbot and Cubot
- Terence as Max - (Terence and Max are both wear orange)
- Rusty as Mindy LaTour - (Rusty was a female in the American narration of Tuneful Toots and Duncan and the Old Mine)
- Captain Star (from TUGS) as Mr. LaTour
- Captain Zero (from TUGS) as Dr. Qwark
- Jack (from TUGS) as E-102 Gamma
- Sea Rogue (from TUGS) as Lawrence
- Fred Pelhay (from RWS) as D.U.F.U.S.
- Isabel (from RWS) as Lucinda
- Spamcan (from RWS) as Chaos - (Spamcan and Chaos are both wear blue)
- Emalina (from JD41796) as Vanilla
- Laura (from T&F/TMS) as Topaz
- Dennis as Wes Weasely
- Buster as Sketch Lampoon
- Jack as Goobster
- Oliver (Pack) as Easy Eddie
- Derek as Dirk the Warthog - (Derek and Dirk the Warthog are both share the same name)
- Bulstrode as Dr. Warpnik - (Bulstrode and Dr. Warpnik are both only made one appearance)
- Tiger Moth as Dove
- Flying Scotsman as Santa Claus
- City of Truro as The Station Square President
- Troublesome Trucks as Robots, SWATbots, Badniks and Bees
- Polar (from Crash Bandicoot) as Muttski
- Crash Bandicoot (from Crash Bandicoot) as Dream Clown
- Baby Thomas Jr. (if Baby Thomas was a real TTTE character) as Younger Sonic
- Baby Emily (if Baby Emily was a real TTTE character) as Younger Sally