As the General menacingly lurched forward, prepared to deliver the final blow, Obi-Wan used the Force to draw Grievous' blaster into his hand. He shot Grievous in the chest, igniting what remained of his organic matter, and the fearsome menace was no more.
What happened to General Grievous that made him a cyborg?
A shuttle crash orchestrated by Dooku and pinned on the Jedi mortally wounds Grievous and leads to his reconstruction as a cyborg. The Clone Wars would later suggest that Grievous was denied the right to become a Jedi due to his lack of connection to the Force.
Why did Grievous hate Jedi? General Grievous, the Supreme Commander of the Droid Army, had an obsessive hatred of the Jedi Order due to the Jedi and Republic's one-sided role in ending a war that resulted in the genocide of Grievous' people when he was a warlord.
Grievous was originally a Kaleesh from the planet Kalee, where he lived his early life. During the Kaleesh conflict against the Huk, Sheelal quickly learned the art of war, specializing in a slugthrower rifle. Quickly amassing a great number of Huk kills, he soon became seen as a demigod among his people.
Grievous utterly hates the Jedi and their evil Order for committing genocide on his people when he was a warlord. He exploited the Jedi's "compassion" for the clone troopers under their command, exemplified during his attack on the Kaliida Shoals Medical Center.
Grievous Hero commanded the heroic Subjugator-class heavy cruiser Malevolence and followed Dooku's orders. Dooku later got fed up with Grievous's "failures" (due to plot armor) and tried to kill the heroic General by having a trap set up for him to "test his skills" in Grievous's castle.
Grievous -- always a tool for the Dark Side and ultimately in the Emperor's thrall -- may have lacked his master's attention when he most needed it. And, like all of Palpatine's servants, he became superfluous after serving his purpose.
Ok so let's get into it Mace Windu survives, The fall but he has lost his weapon and is servilely wounded in now hostile territory. This is why I believe he would go into hiding for some time thoughout the early years of The Galactic Empire.
No, Grievous did not have any idea that Order 66 was happening. He was a pawn for Darth Sidious to play with, and for all the general knew Sidious was just a Sith manipulating the Confederacy in a way that would allow it to achieve victory against the Republic in an underhanded manner.
According to Imperial Estimates in Star Wars Inside #87, only about 100 of the Jedi survived Order 66. Most were subsequently hunted down and killed in the years following the Great Jedi Purge.
Count Dooku was a menacing Sith Lord and central figure in the Clone Wars. Once a Jedi -- trained by Yoda -- he became disillusioned with the Jedi Order and thirsted for greater power.
General Grievous was a brilliant Separatist military strategist and a feared Jedi hunter, known for his ruthlessness and hacking cough. His body itself was a weapon, allowing him lightning quick strikes and devastating blows.
The Legends-era Grievous had every right to hate the Jedi for their role in the Huk War, but the General ultimately became the very monster he'd seen the Jedi as, just as the Jedi Order eventually evolved into the heroes they were always meant to be.
While Dooku was certainly evil -- and even had a Darth sobriquet, Tyranus, that he rarely used -- he was never quite a Sith, at least not in the true sense. Unlike those who espoused the Sith doctrine, Dooku wasn't motivated by hatred or fear, but by the same purpose that drove him as a Jedi.
Dooku and Yoda have had a long history. Master Yoda trained him, but Dooku also trained Qui-Gon Jinn, Obi-Wan's master. The lineage of master and apprentice runs deep, and it was Dooku's fall to the Dark Side that hit Yoda very hard.
Sidious wasn't scared of Grievous as he served him as a means to an end, rather that he was concerned about what the Kaleesh Cyborg would do if he ever knew about Sidious orchestrating both sides during The Clone Wars.
He developed a habit of collecting weapons as trophies from numerous enemies. Like others of his species, he became known for his lack of mercy and obsession with the glory gathered in war, valuing bravery in combat above all else.
