If You are Not Looking For The 2 Characters, You maybe looking for the Episode
"They can be troublesome when they want!"
— Toby. Terence, Bertie and Harold. Season 3.
|Bill and Ben|
Quarry Engine 1
Quarry Engine 2
Ben and Bill are Twin engines
- Season 2 - Bill and Ben, BoCo's Christmas Rescue (only bill speaks) and Edward and Trevor! (only bill; mentioned)
- Season 3 - Terence, Bertie and Harold! (do not speak)
- Season 4 - Bill and Ben Trick Toby!/Bill and Ben's Trick!, Edward's Exploit (do not speak) and James goes "Buzz Buzz" (do not speak)
- Season 5 - Salty and Mavis, Percy's Big Bath!, Fergus the Brave and Thomas' Missing Christmas Tree (cameo)
- Thomas' Rescue: The Movie (do not speak)
- In Henry and His Tunnel, thier models where used for the mainland engines.