Of course Karza was (probably) a cheap Darth Vader knock-off, but as I'm more of a comics guy instead of a SWs guy, my first associations was with iconic comics villains. Now that you mention it, Micronauts was obviously Star Wars driven.

 Irony and subtly are the first casualties in the eternal battle of wits between people divided by a common language. So read between the lines or you'll fall through the cracks...

....Quoting other people is no substitute for thinking for yourself...

Do you dare enter where angels fear to thread: Comicidal Maniac -  Mystic Master of the Martial Arts - SWords of Sorcery