|This article is about the fogman. You may be looking for the diesel engine.|
When there is fog about, Cyril puts detonators on the tracks to warn the engines. One time, he was replaced by a foghorn, but saved the day when the foghorn caused a landslide with its vibrations, which crushed the foghorn, and made Thomas crash. Cyril was soon given the job back and has proven to be useful. In the tenth season, he can be seen working with Farmer McColl on McColl Farm. In the eleventh season, he was a lighthouse keeper.
In the twenty-second season, a series of near misses and accidents during a foggy day leads to the Fat Controller inviting Cyril to Knapford. There, he reintroduces rail detonators to the engines and sets them up, using Philip to demonstrate how they work. Thanks to these detonators, the engines are able to work without worrying about having an accident. However, Samson mistook them for fireworks and ran away in fright, going faster out of surprise at each detonation.
- Kerry Shale (UK/US)
- Ryōichi Tanaka (Japan; sixth season only)
- Nobuaki Kanemitsu (Japan; eleventh season only)
- Cyril's CGI model was modified from an old male passenger.