"Silly" Billy is an Orange Tank Engine with Prominent Buck Teeth.
When we first met Billy, He was Naughty.
Billy is a Manning Wardle L Class 0-6-0ST. Charlie is another Member of This Class.
- Season 4: Duncan and the Passengers.
- Season 5: Boastful Billy.
- Season 6: Officer Murdoch (does not speak)
- Season 7: Molly's Folly.
- Season 11: Stepney and the Bluebell Branchline (cameo) and Station Situation.
- Season 12: The Importance of Being Billy, Percy Gets a Promotion (does not speak) and If The Dome Fits (does not speak)
- Season 14: Millie's Castle Hassle (cameo),
- Season 15: Roundhouse Roulette, The Island of Misfit Engines
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