|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 it and made Thomas crash. Cyril was soon given the job back and has proven to be useful. In the tenth series, he can be seen working with Farmer McColl on McColl Farm. In the eleventh series, he was a lighthouse keeper.
In the twenty-second series, a series of near misses and accidents during a foggy day led to the Fat Controller inviting Cyril to Knapford. There, he reintroduced rail detonators to the engines and set them up, using Philip to demonstrate how they work. Thanks to these detonators, the engines were 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 series only)
- Nobuaki Kanemitsu (Japan; eleventh series only)
- Yuta Odagaki (Japan; twenty-second series onwards)
- Gerhart Hinze (Germany)
- During the twelfth series, when the human characters in Thomas & Friends were recreated into CGI, Cyril was one of these humans. However, as of the thirteenth series, this model seems to have been repurposed into a generic old male passenger. When Cyril returned in Samson and the Fireworks, Cyril's CGI model was a modified version of this same model, likely to differentiate between the two characters.