watch 01:27 The Loop (Movies) Do you like this video? Percy is a small, green saddle tank engine of Thomas the Tank Engine Tales. He is engine number 6. Percy is also Thomas' best friend. His favorite job is delivering the mail. Percy, like Thomas, appears in every episode. Retrieved from "https://movies.fandom.com/wiki/Percy?oldid=111930" Categories: Thomas the Tank Engine characters Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.