Dennis is a lazy Diesel.
When Dennis was new to the railway, he tried to take advantage of Thomas. He soon learnt his lesson when he reversed into a ditch. With Thomas' help he was able to finish his work and promised to be Really Useful Engine from now on.
Dennis is a very lazy Diesel who tries to take advantage of others and depend on them to do his work. Dennis will always create excuses to get out of work, but usually gets caught in his lies, and is always very sorry - until he finds another opportunity to get out of work again.
Dennis is based on No. 11001, a Bulleid Diesel built at Ashford Works, England in 1949 and scrapped in 1959. He also carries his basis' number.
Dennis is painted light grey with dark grey wheels and roof and a red bufferbeam.
Because Norman is Dennis' twin, Dennis may be returning to the television series soon.
- The Great Discovery (cameo)
- 2006 - Dizzy Dennis and Justice for James
- 2007 - Easy for Edward
- 2011 - Salty's Surprise!
- 2012 - Bubbling Boiler (cameo)
- Tsutomu Densaka (Japan)
- He has a twin brother named Norman.
- According to a magazine article, he lives at the Sodor Dieselworks with Diesel 10.
- Wooden Railway (discontinued)
- Take-Along (discontinued)
- My Thomas Story Library (discontinued)
|North Western Railway|
|Thomas • Edward • Henry • Gordon • James • Percy • Toby • Duck • Donald and Douglas • Oliver • Barry • The Austerity Engine • The Red Engine • Bill and Ben • Daisy • BoCo • Bear • Mavis • The Works Diesel • Pip and Emma • Peel Godred Engines|
|Harvey • Emily • Fergus • Arthur • Murdoch • Molly • Neville • Rosie • Whiff • Billy • Stanley • Hank • Flora • Victor • Charlie • Bash and Dash • Ferdinand • Scruff • Belle • Diesel • Derek • Diesel 10 • 'Arry and Bert • Salty • Dennis • Den • Dart • Sidney • Paxton • Norman • Flynn • Winston • Stafford|