Azul is a little blue train who first appeared in the episode Choo-Choo which he won a whistle in.


Azul, a little Hispanic locomotive, isn't as busy as some of the other engines, but he still works hard with his deliveries of slate from the Denverville Mining Company, and will always be ready to pull passengers and tourists along the line. While he sometimes stays with the rest of the F.&F. R.W.T. Co. Ltd. engines, he lives at Greendale Junction with the Greendale Rocket, as it's closer to his workplace at the Denverville quarry. He's especially proud of his big whistle, which he won in a big railway race back on his home railway in Mexico.


Azul appears to be a freelance design and does not resemble a specific prototype.


  • Azul started off as a minor character on 'Dora the Explorer' but his Mexican accent in the show was a little less evident. His big railway race took place in his debut episode.
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