Why GL named Dooku Darth Tyrannus...
Its interesting really. Tyrannus is not just some name GL made up because it sounded ferocious, intended to remind us of the famed dinosaur.
TYRANNUS is actually a greek name, meaning "absolute ruler" or "soverign." Tyrannus is a name mentioned in the Bible, connected with a renounded greek school.
Anyway, I find the fact that the name means "absolute ruler" very intersting in light of Dookus possible motives and HIS plans for the galaxy. I have my own theory, but I would like to see some of you guys' speculation first.