"She bought it! Heh heh heh!"
— Fergus, after he tricked Molly, Fergus' Day Off, eleventh season Fergus is a traction engine. His catchphrase is "do it right" and always says it when an engine is doing something wrong.
Mike Goes on Strike (cameo)
- Season 11: Fergus' Day Off, Stepney and the Bluebell Branchline (cameo) Station Situation Old Square Wheels
Specials: Oliver's Eleven
Fergus is based on a real traction engine previously named "Blue Circle" which is the same color as Fergus. On occasions, "Blue Circle" has been dressed up as Fergus.