If you want, we could be the 'Black Dragon Pirates' or 'Dragon Pirates' or whatever. xD It doesn't have to match the ship, but it can.
I've decided to be completely original and call us "Black Dragon Pirates". Oh yeah, no one would have seen that coming. And our jolly roger is the image of a black dragon with bones crossing underneath it! OMG, I am so amazing at coming up with original stuff. (For those of you who do not know what sarcasm is, that was an example).