The Emerald Engine That Could is based on Thomas/The Little Engine That Could parody with The Little Engine That Could sounds and Thomas the Tank Engine and Friends clips.
- Emily as Tillie (Emily and Tillie are both beautiful)
- Mavis as Georgia
- Edward as Doc
- Spencer as Farnsworth
- Gordon as Pete
- Toby as Jebediah
- Thomas as Chip
- Cranky as Tower (Cranky and Tower are both tall)
- Percy as Eric
- Elizabeth as Jill
- Henry as Rollo the Clown
- Daisy as Grumpella
- Stanley as Chippers the Toy Monkey
- Donald and Douglas as the Giraffes
- Duck as Purky the Baby Elephant
- Stepney as Handy Pandy
- Oliver as Strech
- Molly as Missy
- Duke, Skarloey, Rheneas, Sir Handel, Peter Sam, Rusty, Duncan, Mighty Mac and Freddie as Toy Soldiers/Teddy Bears/Cake-Carrying Mice
- Diesel as The Big Wolf
- Bertie as The Little Wolf
- Smudger as The Eagle (The Eagle's voice suits Smudger)
- Diesel 10 as The Voice Inside The Cave
Emily: I think I can, I think I can, I think I can, I think I can! I thought I could.
Thomas: You did it, Emily!
Emily: Yes, I did it, and it was worth it!