Den and Dart are 2 Diesels who run the Vicarstown Dieselworks.
Trivia[]
- Den and Dart will meet Pooh and his friends in Pooh's Adventures of Thomas & Friends: Day of the Diesels.
- Den and Dart will make their guest starring appearance in will guest star in Thomas' Adventures of Fantasia, Thomas and Little Nemo: Adventures in Slumberland, Thomas' Adventures of Cloudy with a Chance of Meatballs, Thomas' Adventures of Cloudy with a Chance of Meatballs 2 and Thomas' Adventures Chronicles.
- Den and Dart along with Murdoch became best friends with Bulk Biceps.
