Diesel

Diesel is a devious diesel engine.

Appearences

 * Season 2 - The Christmas Sacks
 * Season 4 - Stick with Steam, April Fools and Showing Off
 * Season 5 - The UFO
 * Season 6 - Percy and the Trucks, The Runaway Percy and Rhyming Engines
 * Season 9 - The Posh Coaches