|This article is about the Great Western Engine. You maybe looking for the excavator.|
Oliver is a Great Western engine. He works on Duck's branchline and has two coaches named Isabel and Dulcie and a brake van named Toad, with whom he shares with Douglas. He prefers Bulgy as a "mean scarlet deceiver" and often is sometimes seen at the Brown Turntable. He is aggravated by S.C. Ruffey and the other troublesome trucks.
Oliver is a great western engine that works with Duck on Duck's branchline.
- In the French version of Keekre24's series, Oliver is called Olivier, like the excavator.
- In the Spanish version of Keekre24's series, Oliver is called Oliviero.
- Season 11: The Great Western Way, Just Duck's Luck, Spencer Goes Too Far (cameo), Holly Jolly Molly and BoCo and the Cocoa
- Season 12: Greetings, Montague!, Scottish Blues, The Importance of Being Billy (cameo) and Vicarstown Takedown
- Season 13: Bert's Arlesdale Fail, Who Stole The Coal?, Sam I Am (cameo), Toad Gets Towed, Hector and Logan's Hot Pursuit (cameo) and How Gator Stole Christmas (cameo)
- Season 14: Double-Decker-Wrecker, Hiro and the Heat Wave (cameo), James in a Jam and Hatt Trick
- Season 15: Roundhouse Roulette (cameo), Harvey's Happy Accident (does not speak), Tyrannical Rex (cameo)