Trivia / Mysterious Doctor Satan

• Prop Recycling: Doctor Satan's Robot would be dubbed the "Republic Robot" for its use in other Republic film serials like Zombies Of The Stratosphere (which reused Stock Footage from the bank robbery scene), Commando Cody: Sky Marshal of the Universe, and Undersea Kingdom (its first appearance).
• Referenced by...: The clunky Killer Robot would be subject to Affectionate Parody with Satan's Robot in The Adventures of Captain Proton (a cheesy holodeck program in Star Trek: Voyager) and R2ScrewU in J-Men Forever (a Gag Dub of scenes from Republic film serials, including this movie).