His name is Emperor Abaddon, The Destroyer.

AKA Darth Durai, The Undefeated.

Okay, okay - he's not new, he's old. In fact, he's ancient! But he's back and the WHOLE GALAXY is trembling in fear of the terror that awaits all those who have been unfaithful to the true source of all life and power - the DarkSide!!!