Dart was created by ExpiTheCat in early 2011, as images from the upcoming Thomas & Friends movie - Day of the Diesels - were being leaked to the public. Dart's model is a repainted version of ExpiTheCat's Scruff model, however it does have one difference from the other three diesels created using this template - a large plate on top of its center body. Dart is the first of the four diesels to include a white face.