You're right they look nothing alike. After reading about this character and that his arms split into 4 arms each with a lightsaber, I began to wonder if they got the idea from the NJO. Luke, Mara and Tahiri fought an ancient Sith on Coruscant shortly after the Vong took it over. His name was Lord Nyax, and he had lightsabers coming out of evcerywhere. Could he have had some influence on the prequels?