Fireman Sam

Fireman Sam was a children's animated series on Earth around the 21st century.

The Twelfth Doctor and Clara Oswald once met a fireman named Sam, who had insisted that he had "heard all the jokes" and that none of them are funny. (COMIC: The Hyperion Empire)

Behind the scenes

 * Both David Tennant and John Barrowman will have voiced characters in the show as of 2018.