If there are going to have pirates speaking Kēlen, then I need a word for pirate. maþālōn can also be used to refer to kidnappers and thieves, since the root -þāl- means seize, take, capture.
la liēn λi maþālōn malūta Ropertes; wa mammārenien rēha;
I am the Dread Pirate Roberts. There will be no survivors.