 In the "Jedi Prince" novel series, a group of impostors calling themselves the Prophets of the Dark Side install a three-eyed mutant named Trioculus as Emperor by claiming that he is Palpatine's son, reforming the Empire (as Trioculus's Empire).By the end of the series, Palpatine's true son, Triclops, helps the Rebels defeat this new enemy.In the "Thrawn" trilogy book series, the New Republic is almost brought to its knees by Grand Admiral Thrawn, the new leader of the remnants of the Empire (which are known as Thrawn's Empire or Empire of the Hand) and a military genius.