Trivia / Undersea Kingdom

• The Danza: Ray (Crash) Corrigan as... Lt. Crash Corrigan.
• Dueling Works: with Universal's Flash Gordon (serial). In fact, according to The Other Wiki, there were numerous intentional similarities between the two serials, including a Yellow Peril villain and a similar-sounding name for The Hero.
• Prop Recycling: An updated version of a Volkite would become the so-called "Republic Robot" for its use in other film serials like Mysterious Doctor Satan, Commando Cody: Sky Marshal of the Universe, and Zombies Of The Stratosphere.