As with many Universal serials of the era, every episode after the first begins with a slanted opening crawl to catch up the audience on the story so far. These inspired the iconic opening crawl of Star Wars: Episode IV - A New Hope (1977) and the subsequent Star Wars films.
Chapter Titles:
- 1. The Purple Death
- 2. Freezing Torture
- 3. Walking Bombs
- 4. The Destroying Ray
- 5. The Palace of Peril
- 6. Flaming Death
- 7. Land of the Dead
- 8. The Fiery Abyss
- 9. The Pool of Peril
- 10. The Death Mist
- 11. Stark Treachery
- 12. Doom of the Dictator
Buster Crabbe (Flash Gordon), Charles Middleton (Ming the Merciless), and Frank Shannon (Dr. Alexis Zarkov) are the only actors to appear in all three "Flash Gordon" serials.
Buster Crabbe (Flash Gordon) and Shirley Deane (Princess Aura) died only three days apart: Crabbe on April 23, 1983 and Deane on April 26, 1983.
The dialog of the Rock People is normal speech played backwards.