Gremlin is Dowager Hatt's pet dalmatian. He appears in the Season 5 episode, Gordon and the Gremlin. He, along with Dowager Hatt, rode Gordon's special express. After Gordon stopped at the station, his whistle scared him and he ran into a field, where a bull was grazing. The bull scared him even more, and he ran straight to Thomas' cab, where he rode to the docks and reunited with Dowager Hatt, who, after that day's events, renamed him Gremlin.
Gremlin the Dalmatian should be able to reappear in the eighteenth season in full CGI.
- Gremlin's Dog Theme is Percy and Harold Race,Which this Dog Shares With the Barber, Dowager Hatt, & The Angry Policeman.
- Gremlin's original name is unknown, as it was never mentioned in the episode.
- Grainger (Shining Time Station)
- Muttski (Sonic the Hedgehog)
- Poochy (Super Mario Bros.)
- Barky Marky (Tiny Toon Adventures)
- Mr. Gobble (Animaniacs)
- Nevis (Dr. Seuss)
- Santa's Little Helper (The Simpsons)
- Buster (Toy Story 2 & 3)
- Justice (Kablam!/Action League Now!)
- Wind-up Lobster (Veggie Tales)
- Barkley (Sesame Street)
- Bally the Dung-Ball (Maya the Bee)
- Chief the Dog (Barney)
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