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Diesel 10 is a evil diesel and the main villain of Thomas and the Magic Railroad, Day of the Diesels and in Season 17 episode "The Missing Christmas Decorations."

Bio: Diesel 10 hates the steam engines and want to destroy a magic engine named lady and her magic railroad. He tricked Percy to take over the Steam Works and he stole the Steam Team's Christmas decorations.


  • Diesel 10 is very similar to head wolf from alpha and omega 4 because they both want a female charther to kill\ destroy (like head wolf wants to kill Daria and diesel 10 wants to destroy lady).