"Devious" Diesel, as his name implies, is a sinister diesel shunter who originates from British Railways, and is the first diesel engine to arrive on Sodor. In the television series, Diesel eventually becomes a permanent resident of Sodor.
a "Mount Rushmore" is a top 4 greatest or most impactful of something, but in this case, make it oddly specific.
rules: pick 4 for your mount rushmore, downvote the rest that are outside your rushmore
