| Darth Sideous is a Dark Lord of the Sith, supposedly he is Senator Palpatine, who will go on to become Emperor. So yes, he is a Jedi, but not one of the present Council.
Why don't the Jedi Council know who he is?
Since the rise of the Dark side, the power of the Jedi has diminished. "The Dark Side clouds everything," says Yoda. |