At some unknown point in his life, Broondjongen found himself serving aboard the Flying Dutchman under Davy Jones. As with the other crew members aboard the Flying Dutchman, Broondjongen slowly took on characteristics of various sea creatures over time. His torso split in half at the shoulder in the manner of a clamshell, revealing a withered figure inside. This being, captured in a death frieze, was similar to a sibling absorbed by a dominant twin in utero, with Broondjongen showing what appeared to be vestigial remnants of a dead sibling.
He would remain in servitude aboard the Dutchman after Lord Cutler Beckett assumed command of the ship and its captain, and when dozens of East India Trading Company soldiers were stationed aboard the ship. Broondjongen was present aboard the Empress when Davy Jones met with the ship's captain, who turned out to be Elizabeth Swann. Later, Broondjongen held a sword to an East India Trading Company soldier, and looked up as Davy Jones walked past and discovered Ian Mercer in his cabin.
Later, he manned the Flying Dutchman's cannons during the battle of Calypso's maelstrom. He did so alongside Angler and the East India Company soldiers. Later in the battle, Broondjongen would climb atop the ship's crow's nest, where he yelled at the Motley crew of the Black Pearl while waving an axe in the air. Broondjongen would later safely swing onto the Black Pearl where he fought the Motley crew. During the fight, he was stabbed in the back by a pirate and was trying to pull the sword out of his back for most of the fight. He likely reverted back to human form after William Turner become captain of the Flying Dutchman, and was freed from servitude aboard the ship. Whether he chose to remain as part of the crew or left the ship remains unknown.
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