Diesel

"Devious" Diesel is a devious diesel shunter and he is a leader of the Diesel Team. He is a major antagonist in Thomas the Tank Engine. His design is based on the BR Class 08.

Unlike many of the show's designated "antagonists", who were merely rude or bullying, Diesel was very much like a more traditional antagonist and was always thinking up ways to cause trouble for Thomas and his friends. Diesel likes to play tricks on "steamies" (normal trains), which he hates and wants to become obsolete. He likes to talk to the Troublesome Trucks and tell them to do bad things.