Cows/A Cow on The Line is the 31st episode of Big City Engine the Tender Engine and Friends and the 2nd episode of Season 2.
- Farnsworth (from The Little Engine That Could) as Edward
- The Friegth Engine (from The Little Engine That Could (Book)) as Henry
- Bluenose (from TUGS) as Gordon
- Mallard (from RWS) as Toby
- Spencer as Percy (Does not speak)
- Big City Engine as Thomas (Cameo)
- The Shiny Engine (from The Little Engine That Could (Book)) as James (Cameo)