After taking the reign as Palaptine’s new Sith apprentice Darth Tyrannus or Count Dooku began training many dark disciples of his own and teaching them in the ways of the dark side. These included Asajj Ventress, Savage Opress and even Quinlan Vos himself near the end of the Clone Wars… But what did Palpatine think about Dooku taking all of these acolytes under his teachings? Well we now know exactly what he thought with words directly from his mout!
So Lucasfilm recently released a book called Secrets of the Sith, which is basically the personal Journal of Palpatine, where he collected his thoughts about everything from the rule of two, the force dyad, his apprentices and even his cloning.
The following entry contains his thoughts on Darth Tyranus’ apprentices and why each of them had to be swiftly eliminated… so I’ll read that for you now:
Darth Tyranus took on many students despite the Sith’s Rule of Two. He believed me unaware of his desire to usurp my power and position. But such ambition does not go unnoticed by a Sith Master- nor does it go unpunished. Though Dooku trained his students well, none would rise to join the ranks of the true Sith. Of that, I would make certain.
After that, he goes on to deliver his thoughts about the swift and deadly asajj Ventress, realizing that she was probably Dooku’s best ever trainee and probably posed the biggest threat to him out of any of them.
He says: Asajj Ventress. Dooku’s first disciple was perhaps his most impressive. Sold into slavery as a child, this Dathomirian found her way into the care of an accursed Jedi Knight. She trained as his apprentice, but her master’s death drove her to the dark side. This led her to Darth Tyrannus. Though Asajj Ventress proved a formidable assassin, I sensed the dark power growing within her could be used against me. And so, I ordered Tyranus to kill Ventress – but the girl escaped with her life… She spent most of her remaining days seeking revenge against her former master.