Kathy asks Bowser to clean up for her, but instead he makes a mess of the treehouse.
- Barney as Mr. Conductor
- Bowser (from Mario) as Mr. Conductor's Evil Twin
- BJ as Schemer
- Baby Bop as Stacy Jones
- Carlos as Billy Twofeathers
- Kathy as Kara
- Mr. Boyd as J.B. King
- Shawn as Dan (flashback cameo)
- Tosha as Becky (flashback cameo)
- Farmer Pickles (from Bob the Builder) as Barton Winslow (mentioned)
From the Thomas Story
- BoCo as Edward
- James as Gordon
- Bash & Dash as Bill & Ben
- Thomas as Sir Topham Hatt
- The Quarry Manager as Himself
- The Quarry People as Themselves
- Carlos: Now thanks for the help on this model, Barney. But I need your help that would got into those tiny little bolts here.
- Barney: I'm plenty here, Carlos. I've got the whistle working. Listen. (presses whistle and it blows)
- Tosha and Kathy: (gasp)
- Kathy: Oh, it's beautiful!
- Tosha: A new york cunction. Woah, they don't make them like that anymore.
- Kathy: Carlos, were all trains alike in the old days?
- Carlos: Nope, Some of them look alike then. Each of these engines were always different to the people who made them. That's always I like the new engines. Even ones that were built the same shop are different. And the smokebox was making them all higher. They are a little shorter. The steam pipes are sightly different angles. But you know one way to tell one engine from up. The sound of a whistle, non two whistles sound exacly the same pitch. Each one has a sigtly different sound. Sort of like people, to mean, we all just all slightly different from one of it.
- Kathy: I made a thing for this picture, as a favorite to Mr. Boyd.
- Carlos: Oh, that's a...beautiful face.
- Barney: I regonize it. I know who it is. The name who gates me.
- Kathy: It's BJ, Barney, I mean, your enemy.
- Baby Bop:
- ThomasandGordon: Can you make Barney/Family Guy parodies?
- SuperMalechi: I never liked Family Guy.