During the battle just now, Tang Xiao had controlled the Son's corpse and utterly crushed Darth Sidious's resistance.
The Son's power rivaled that of a god. Even when Darth Sidious had nearly fully unleashed the Force Storm at the very end, it had no effect whatsoever on the Son. The Ones had most likely originated from the Force world itself, so storms born from the Force world naturally could not affect them.
Moreover, during the earlier battle, Darth Malthael had noticed that Blackhole was constantly using his ability to control shadows to assist Darth Sidious. With Blackhole's support, Darth Sidious was practically invincible. The same was true when controlling the Son's corpse.
His control over the Son's corpse was equally poor. He was practically in the position of someone with Superman's strength and an infant's skill. The Son could walk over and kill Blackhole with a single slap, but in this state, catching Blackhole as he fled everywhere using the power of shadows was nearly impossible.
So before deciding to use the Son's corpse, the first thing he had done was rush over and use the Death Force to revive Sariss.
Although the original Star Wars plot said very little about Blackhole's power, it contained one extremely important piece of information: although Blackhole had done all sorts of inhuman things to his daughter Sariss, she had long since become the deepest hidden weakness in his heart.
Blackhole, a believer in the Void Cult, had always believed that the universe would inevitably return to annihilation as entropy increased, and that the Void Cult's mission was to ensure the arrival of that final annihilation. Thus, destroying everything had been Blackhole's faith from beginning to end. The reason he had been willing to serve Darth Sidious and offer his power to him was