Vander Decken

Van der Decken is the captain of the "Flying Dutchman".

On a stormy day hundreds of years ago, Van Der Decken began killing off his crewmates and invoked the wrath of God. As punishment, he was forced to wander the seas forever. He later encounters the Straw Hats when his sea demon Wadatsumi stops an angular fish from eating the Thousand Sunny. Van der Decken then orders Wadatsumi to attack the Thousand Sunny so he can take their treasure. Unfortunately, the Kraken, having been tamed by Luffy, Zoro, and Sanji, intervenes and defeats the Umibouzu. Van der Decken then yells at Wadatsumi to get up and retaliate, but is informed by one of his crewmates that the undersea volcano is about to erupt.

Trivia

 * In maritime folklore, Van Der Decken's full name was Hendrik van der Decken. Whether this character shares the same name as his folklore counterpart is currently unknown.