Star Wars: Rise of the Dark Empire

Four months after The Rise of the Rebellion, Po'twan adventures to Korriban to become Darth Po'twan and so he could get revenge on Darth Starkiller for what he did to him.

While he is training Master Ky'sia his sister trains a new generation of Jedi on Tython and was deemed "Grandmaster of Tython's Jedi Forces*

But eventually they both knew what they had to do. Po'twan needed to kill Ky'sia. But Grandmaster Ryan's son had a protest against a brother to kill his sister so he stands the challenge of fighting Darth Po'twan.......... The New General of The Dark Order and Droid Armada........