Mavis and the Signal/Percy and the Signal is a episode of Rosie the Lavender Tank Engine and Friends (Thomas Episodes).
- Mavis as Percy
- Murdoch as Gordon
- Sir Handel as James
- Rosie as Thomas (Cameo)
- Belle as Edward (Cameo)
- BoCo as Henry (Cameo)
- Bill as Annie
- Ben as Clarabel
- Lady Hatt as Sir Topham Hatt (Cameo)
- George Carlin as the Narrator
- Mavis: Peep, Peep! Hurry up, Murdoch the train's ready!
- Narrator: Murdoch thought he was late.