Trivia

According to director Lindsay Shonteff in a 1994 interview, Klaus Kinski had numerous ideas for unusual behavior exhibited by his character President Boong, including that whenever someone entered a room where he was he would climb out from underneath a huge pile of cushions and that whenever he was talking to a pretty girl an abnormally long tongue would emerge from his mouth and try to lick her face. Sadly none of these made the final cut, but if you watch carefully you can see his tongue starting to come out in some scenes.

Based on a series of novels by Sax Rohmer about a megalomaniac femme fatale.

Shirley Eaton reprised her role as Sumuru in Jesús Franco's The Girl from Rio (1969). Eaton later said "I did enjoy being the wicked lady Sumuru in two rather bad films, which I had not had the chance to be before." However she retired from acting shortly afterwards.

Klaus Kinski is dubbed by Robert Rietty.

This film was featured in the KTMA season of Mystery Science Theater 3000.