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Baz and Bernie are two criminals from The Mainland who visited The Technology Fair.


Thomas & Friends

Baz and Bernie first arrived on Sodor onboard Sonny, looking to steal an invention from the Technology Fair. By disguising themselves as cooks, they managed to infiltrate Ulfstead Castle.

Following a few mishaps with the other inventions, Baz and Bernie decided to steal the plans to Ruth's Hover-Car. Due to Sonny's disobedience, the pair chose to use Kenji as their getaway vehicle. During the escape, the pair were separated when Bernie removed Kenji's coupling and was left stranded on the passenger coach.

Baz was eventually caught by Thomas, Rebecca, Sir Robert Norramby, Ruth and the police and - after Bernie caught up and accidentally revealed their plans - the pair were arrested and taken away by the police.


Both Baz and Bernie are mischievous crooks. Out of the two, Baz is the more intelligent, often having to stop the rather simple-minded Bernie from spilling their secret plans. Baz is noticeably more villainous compared to Bernie, willing to force Sonny to help them by threatening to scrap him and willingly abandoning Bernie to get a bigger share of the profit. Baz was also willing to blame Bernie for everything to avoid getting arrested. Bernie is also the more naïve of the two, as he tends to miss a few key details or state the obvious. Additionally, he is loose-lipped in many critical situations.


Baz is the taller and more slender of the two. He wears a light grey shirt with a dark grey jacket, matching his hat and trousers. He also wears a blue tie with red spots and brown shoes.

Bernie, meanwhile, is rather stout. He wears a light brown coat with a white shirt, dark brown trousers and shoes and a pink neckerchief.


Voice Actors




  • Baz and Bernie are the last characters to be human antagonists.
  • Baz and Bernie are referred to as "rogue engines" in Sonny's description from The Big Book of Engines; it is currently unknown whether this is an error or an early concept for the duo.
  • They share names with two characters from Finding Nemo, two crabs that Dory and Nemo ask where Marlin went, and Dory later threatens to feed the green crab to the seagulls.
  • Rob Rackstraw gives Bernie different voice tones in each of his two appearances.
  • They are similar to Harry and Marv, the thieves from the first two Home Alone movies, as Harry is the smarter and more malicious of the two similar to Baz, and Marv is less intelligent, similar to Bernie.

* RWS only | ** T&F only