For some reason, I was "ooh, Darth Maul, twin-blade lightsaber" when I first saw Episode I, when I was about twelve years old (alas, at the time I had not heard of Exar Kun, who had his twin-blade lightsaber about four thousand years before the events of Episode I), so I came up with "Joshmaul". There have been a few prefixes to go with it - "Darth" in the beginning, of course, but these days I commonly use "Emperor"...something to keep in mind in the event I ever became ruler of my own empire. (Which, in a fictional sense at least, has happened many times. Emperor Joshmaul the First, heh...) Occasionally I've used "Warmaster" or "Admiral" to go with it.