The Fighting Devil Dogs

The Fighting Devil Dogs (1938) is a 12-chapter Republic movie serial starring Lee Powell and Herman Brix, the latter better known by his later stage name, Bruce Bennett. It was directed by William Witney and John English. While not often considered a great serial, as it contains much stock footage and two recap chapters, it is famous for its main villain, the Lightning—the first costumed supervillain. There is some speculation that George Lucas used the Lightning as a template for Darth Vader.