Ryloth is the principal planet in the Ryloth system located in the Outer Rim near Tatooine. It is home to the Twi'leks, a humanoid species with two large, fleshy head-tails growing from their skulls. The Twi'leks call these prehensile appendages lekku and can communicate through subtle lekku gestures, although they also speak Twi'leki. During the Clone Wars, scheming Separatist warlords blockaded and invaded Ryloth, hoping to steal its riches.
The freedom fighter Cham Syndulla arose on Ryloth during the Clone Wars, after the Separatists invaded his homeworld. A dedicated fighter with no tolerance for corruption or dishonesty, Syndulla forged an alliance with Mace Windu that brought liberty to his fellow Twi'leks. Syndulla resisted the Empire after its rise to power, hatching a plot to ambush Emperor Palpatine and Darth Vader on Ryloth. His daughter Hera would continue his campaign to undermine Imperial power.
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. Dooku voluntarily left the light side behind and became Darth Sidious’ dark side disciple, taking the secret name Darth Tyranus and leading the Separatist army.
A grim Jedi Master with an amethyst-bladed lightsaber, Mace Windu was the champion of the Jedi Order, with little tolerance for the failings of the Senate, the arguments of politicians, or the opinions of rebellious Jedi. As the Clone Wars intensified, Mace sensed the dark side of the Force at work, and knew the Jedi's enemies were plotting to destroy the Order and end its stewardship of the galaxy.
In the final days of the Republic, the galactic government had grown so huge and corrupt that any attempt at change required radical thinking and extreme actions. Outlying systems that saw no benefit from being part of the Republic despite paying heavy taxes, began to rebel. This undercurrent of disgust towards Coruscant was seized by a charismatic leader, Count Dooku. The former Jedi rallied together these worlds in a Separatist movement that saw the departure of thousands of systems from the Republic. When Dooku's alliance was secretly backed by corporate titans that offered their unlimited droid armies to the cause, the Separatists emerged as a major threat to the Republic, and the galaxy tipped towards full scale war.