The Flying Dutchman is a recurring character in SpongeBob SquarePants.He is a green pirate ghost who haunts Bikini Bottom. He is the devil of the sea which makes him enemies with King Neptune, when he had died; he had no funeral because his body was used as a window display. Now he haunts the Seven Seas because he was never put to rest. He expresses a dislike for the tradition in which others dress up as him for Halloween and claims that it "turns the Flying Dutchman name into a laughing stock".
The Flying Dutchman has a green glow around him, yellow eyes with black irises, a scraggly beard, a pirate hat with a chunk taken out; a handbag marked "Souls", a droopy nose, a coat, little pigtails, and a ghostly tail, and also speaks with a Scottish Pirate accent. He has a sister named Sally Dutchman.
During all of his appearances, the Flying Dutchman proves to be anything but a "friendly ghost". Though his role in the series is to be the devil of the sea, varies constantly from a sea demon to a restless soul or even as a psychopompic judge to the dead, Flying Dutchman has been consistently shown to be gruff, malicious and even downright sadistic, scaring people and stealing their souls out simply for fun, and in his first full appearance, he attempted to steal the souls of everyone in the Krusty Krab, simply because Spongebob's ridiculous costume as the 'Flying Dutchman' was the ultimate insult to his image, thus showing that he's extremely prideful.
Despite his antisocial behavior and malevolence, the Flying Dutchman isn't pure evil or without companionship.
It's shown in 'Ghost Host' that he has a number of ghost friends, and has shown both in this episode and in 'Your Shoe's Untied' to be capable to bond with other people in case they have the same interests or objectives (mostly Spongebob). He has also shown in both Ghost Host and Curse of Bikini Bottom to be a notorious womanizer, with not even mortal women being free from his teasers (though the former episode implies that he's divorced). While the Flying Dutchman takes strong delight in scaring people, he doesn't life exclusively to haunting mortals, having sometimes tormented them only out of boredom (scaring SpongeBob for months to wait for his ship to be fully repaired), or otherwise because someone provoked him (as seen in "SpongeBob SquarePants vs. The Big One" and "Curse of Bikini Bottom"). Though he is no saint, the Flying Dutchman has a strong sense of justice and has been known to award people for good deeds done towards him ("Arrgh!") or to punish wicked souls (taking his role as a Psychopomp very seriously, as seen in "Born Again Krabs"), and has been known to keep promises as seen in "Shanghaied", when he grants three wishes to SpongeBob and gang in exchange for his sock.
The Flying Dutchman is shown to be one of the most powerful supernatural being in the ocean, rivaling King Neptune, Though The Flying Dutchman skills vary from episode to episode, he has been consistently capable to levitate, and teleport in a cloud of smoke preceded by a storm. In his first appearance, he is show to be capable of stealing souls and fire-breathing through his nose. He has also shown to be capable of opening dimensional portals to banish his enemies, as seen in "Shanghaied" and "Ghoul Fools". He has shown to be also capable of manipulating matter (even turning SpongeBob and Patrick into ghosts in "Curse of Bikini Bottom" and making objects appear out of thin air) and grant wishes, as seen in Shanghaied and Money Talks.
However, of all his incarnations, his most powerful appearance was in Ghost Host, where he was able to shape shift into numerous horrific forms and warped reality effortlessly. The only limitation to his powers regards his ghost tail. Despite being a champion in looping for centuries, he as long forgotten how to tie his shoes and it's later reveled that he can't eat people without his dining sock.
He is named after the legendary ghost ship, The Flying Dutchman, and seems to resemble the famous pirate Blackbeard (Edward Teach) or the ship's captain and mythological character Davey Jones, although according to the legend of the Flying Dutchman the ships captain is a man by the name of Willem van Der Decken.
The Flying Dutchman actually appeared in its own LEGO set called "The Flying Dutchman", including his ship.
He doesn't like it when his beard is shaved off because of pimples.
It's also said his beard grows in 1,000 years, but it grew back in several months.
In "The Curse of Bikini Bottom" he looks through his closet for a shirt and finds one that is sentimental because he says "It was the shirt I was buried in". However, in "Squidward the Unfriendly Ghost" his origin, from the comic book, says he was never buried and his body was used as a window display so technically, it is impossible for the shirt to be the one he was buried in.
The Flying Dutchman makes appearances in nearly all SpongeBob video games. His first appearance was in the very first SpongeBob video game, "SpongeBob SquarePants: Legend of the Lost Spatula" as the final boss. He also appears as a boss in "SpongeBob SquarePants: SuperSponge" and as an enemy in "SpongeBob SquarePants: Operation Krabby Patty". He appears in "SpongeBob SquarePants: The Yellow Avenger", he is in Rock Bottom and gives SpongeBob a mission to find his 3 keys for him.