Karl Sigmund Stromberg is a fictional character and the main antagonist in the 1977 James Bond film The Spy Who Loved Me.
Although Stromberg has a passion for the ocean and its various species, he despises the human race, not unlike Jules Verne's Captain Nemo.
(In a comic relief after cancelling the payment to the professor and doctor he has his secretary inform the two men's families that they have met with an accident and are "buried at sea".)
This scheme is similar to that of an earlier Bond film, You Only Live Twice, which posited stealing space capsules to start a war between the Soviets and the Americans.
The scheme in which the villain wishes to destroy mankind to create a new race or new civilisation was also used in Moonraker, the next film after The Spy Who Loved Me.
Prior to this, however, Stromberg had abducted Bond's partner, the Russian agent Anya Amasova, and escaped to his city-ship, Atlantis.