As per the plan for the Clone Wars, the Sith needed to recruit someone to lead a droid army. In particular, Grievous' hatred for the Jedi pushed him to near-madness and made him easily exploitable. It may have been the hatred he felt that drove Grievous to join the InterGalactic Banking Clan.
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.
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.
General Grievous Wasn't a Sith - But He Learned Certain Skills From Them. General Grievous never became a Sith in the Star Wars Universe. But his time with them made him one of the scariest enemies in the franchise.
Why Sidious Absolutely Fell In LOVE with General Grievous - Star Wars Explained
Who was Grievous before he was a cyborg?
Grievous was originally Qymaen jai Sheelal, an organic reptilian humanoid native from the planet Kalee. The Kaleesh were at war with the rival Huk species and Sheelal was considered a demigod by his people for his victories in the Huk War.
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.
While the Jedi would remain his sworn enemy, Grievous was a threat to Force users outside their order as well. In fact, perhaps his greatest kill was not a Jedi at all, but a dark side adherent of such immense power that even Emperor Palpatine feared her as his equal.
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.
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.
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.
that Anakin and General Grievous have never met before. So during the Clone Wars show, the writers had to make sure that the 2. never encountered one another. in order to maintain continuity, though there were some extremely close calls.
Most Jedi cannot help but fear Grievous, but Mace Windu does not, allowing him to defeat the General twice. Grievous' training under Count Dooku is shown in Star Wars: Clone Wars, which not only highlights lightsaber combat, but also psychological warfare.
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.
Although he couldn't apprehend the kidnapper, Mace used the Force to crush Grievous' chest cavity. This injury resulted in the asthmatic cough that would remain with him until his death.
Grievous, born as Qymaen jai Sheelal, was a Kaleesh male warlord as well as the Supreme Commander of the Confederacy of Independent Systems early on during the Yuuzhan Vong War.
