Or pirates and vikings sound like them. I don't think that pirates did those "Yarrr!" sound on a regular basis – that's just what the media makes us think, just as they have created a pop culture version of ninjas, completely different from the real ninjas. Anyway, they do resemble a pop culture pirate with the gibberish, inconsistent clothing, metal pieces in their arms, rigged warships and the way they destroy things probably for fun. Nice observation, Info.